Urban rail test line direct current power supply system simulation practical training device

Abstract

An urban rail test line direct current power supply system simulation practical training device provides a safe practical operation platform, the practical training device can simulate a real operation scene of a direct current power supply system through a simulation technology, the potential safety hazard that employees are in contact with strong current (DC750V / 1500V / 3000V) in a real power supply environment in the training process is avoided, and the practical training efficiency is improved. The practical training device ensures that staff can carry out training teaching and practical operation drilling in a safe environment (a practical training device control loop DC24v), meanwhile, the device is simple, light, easy to move and convenient to carry, the requirement for personnel training anytime and anywhere can be met, by means of the device, training of maintenance personnel is not limited by sites any more, the training efficiency is greatly improved, and the practical training device is suitable for popularization and application. And the training effect is enhanced, and the adopted conventional relay control is high in universality, stable in performance and high in popularization value.

Description

Technical Field

[0001] The utility model relates to the technical application field of the DC power supply system of urban rail transit test lines. Specifically, it is a simulation device for the power supply system of the utility model test line. Through simulation technology, it simulates the real operation scenario of the DC power supply system, ensuring that employees can carry out training teaching and practical operation drills in a safe environment, quickly improving employees' skills and meeting the job requirements. Background Technique

[0002] The equipment voltage level of the DC power supply system for urban rail transit is high, the complexity coefficient is large, and the power supply operation is very complicated. Once a fault occurs and cannot be repaired in time, it will directly affect the smooth completion of the vehicle commissioning task. Therefore, higher requirements are put forward for the personnel engaged in the operation and maintenance of power transformation and distribution. They not only need to master the principle composition of the power supply system, be able to proficiently complete various power-on and power-off operation tasks, but also be able to quickly analyze, judge and handle abnormal situations that occur in the power supply equipment to ensure the safe and reliable operation of the power supply system.

[0003] On the other hand, in the daily production power supply process, due to the tight resources of the test line, the DC power supply equipment is almost in the power supply operation state all year round. At the same time, the voltage level of the power supply equipment is high and the electrical interlock relationship is intricate. In actual work, it is very difficult to provide opportunities for employees to improve their skills and conduct practical operation drills on the power supply equipment.

[0004] In view of the above reasons, in order to meet the technical requirements of operation and electrical maintenance brought about by this development, a set of simulation training device is studied to meet the training requirements of the DC power supply system. Content of the Utility Model

[0005] The purpose of the utility model is to reproduce a set of "750V / 1500V training simulation device for urban rail test lines" according to the ratio of 1:1. Function realization: 1. The structure and composition of the DC power supply system can be reproduced on the training device at a ratio of 1:1. 2. It can simulate the power-on and power-off switching operations of the DC power supply system. 3. It can simulate equipment failures and guide employees to analyze and handle the failures. Improve employees' skills and meet the job requirements.

[0006] To achieve the above object, the utility model provides a simulation training device for a DC power supply system of an urban rail test line, which includes a box body. The left part of the box body is a simulated DC power supply system, and the right part is a clock and a button station. The DC power supply system includes a 10KV high-voltage cabinet, a transformer rectifier cabinet, a DC switch cabinet and a test line. Among them: the 10KV high-voltage cabinet includes a high-voltage incoming switch cabinet and a high-voltage transformer switch cabinet. The transformer rectifier cabinet includes 2 transformers and 2 rectifier cabinets. The DC switch cabinet includes a 750 / 1500V voltage conversion cabinet, an incoming line cabinet, a feeder cabinet, a negative pole cabinet, an energy consumption braking cabinet and an isolating switch. The test line includes an overhead contact line, a third rail and a return rail;

[0007] The clock and the button station include a timing display device, a 10KV high-voltage cabinet button station, a transformer rectifier cabinet button station and a DC switch cabinet button station;

[0008] The timing display device is used for training assessment timing display and countdown voice warning;

[0009] The button station is used to simulate the power on and off operations between the 10KV high-voltage cabinet, the transformer rectifier cabinet and the DC switch cabinet, as well as the control of the electrical interlock relationship and the fault handling;

[0010] The 10KV high-voltage power reaches the 10KV bus by closing the high-voltage incoming switch cabinet. Close the two high-voltage transformer switch cabinets, send the 10KV high-voltage power to the two transformers, reduce the 10KV high-voltage power to 610V and introduce it into the two rectifier cabinets. Then, the two three-phase bridge rectifier circuit groups are connected in parallel to form a 24-pulse rectification output of 750V. After passing through the series and parallel outputs of the 750 / 1500V voltage conversion cabinet, a DC voltage of 1500V / 750V is formed. The positive pole of the DC 1500V / 750V voltage is supplied to the vehicle traction and braking through the incoming line cabinet, the DC bus, the feeder cabinet, the energy consumption braking cabinet and the test line overhead contact line / third rail. The negative pole of the DC 1500V / 750V voltage passes through the negative pole cabinet and the test line running rail, and forms a power supply loop through the vehicle and the test line overhead contact line / third rail;

[0011] The above devices are connected by circuits. The circuits include a control power circuit, a high-voltage incoming switch cabinet electrical circuit, a high-voltage transformer switch cabinet electrical circuit, a transformer rectifier cabinet electrical circuit, a DC voltage conversion cabinet electrical circuit, a DC incoming line cabinet electrical circuit, a DC feeder cabinet electrical circuit, a DC power supply system isolating switch electrical circuit, a negative pole cabinet electrical circuit, an energy consumption braking cabinet electrical circuit and a bus and test line power-on visible energy electrical circuit;

[0012] The control power circuit realizes the output and distribution of power through the control loop;

[0013] The electrical circuit of the high-voltage transformer switch cabinet realizes the simulation of the opening and closing states, opening and closing indications, working position and test position states, earthing switch opening and closing, and fault simulation of the 10KV high-voltage switch cabinet through this control loop;

[0014] The electrical circuit of the transformer rectifier cabinet realizes the simulation of the electrical interlock control of the transformer rectifier cabinet through this control loop;

[0015] The electrical circuit of the DC voltage conversion cabinet realizes the DC 750V / 1500V voltage conversion control, signal indication, and electrical interlock control through the simulation of bridge series and bridge parallel outputs through this control loop;

[0016] The electrical circuit of the DC incoming line cabinet realizes the simulation of the opening and closing states, opening and closing indications, working position and test position states, and fault simulation of the DC incoming line switch cabinet through this control loop;

[0017] The electrical circuit of the DC feeder cabinet realizes the simulation of the opening and closing states, opening and closing indications, working position and test position states, and fault simulation of the DC feeder switch cabinet through this control loop;

[0018] The electrical circuit of the isolating switch of the DC power supply system realizes the simulation of the opening and closing states, opening and closing indications, working position and test position states, and fault simulation of the isolating switch through this control loop;

[0019] The electrical circuit of the high-voltage incoming line switch cabinet realizes the simulation of the opening and closing states, opening and closing indications, working position and test position states, earthing switch opening and closing, and fault simulation of the 10KV high-voltage incoming line switch cabinet through this control loop;

[0020] The electrical circuit of the negative pole cabinet realizes the simulation of the opening and closing states, opening and closing indications, fault reset, and fault indication of the negative pole switch cabinet through this control loop;

[0021] The electrical circuit of the energy consumption braking cabinet realizes the simulation of the opening and closing states, opening and closing indications, working position and test position states, and working position and test position indications of the 10KV high-voltage incoming line switch cabinet through this control loop;

[0022] The electrical circuit of the visible energy of the bus and test line power transmission realizes the simulation of the negative pole light strip of the test line, the negative pole light strip of the DC bus, the positive pole light strip of the DC bus, the three-rail power supply light strip of the test line, and the catenary power supply light strip of the test line through this control loop.

[0023] Further, in the control power circuit, the single-phase 220V power supply is connected to the upper side of the air switch QF1. The lower side of the 2P air switch QF1 is respectively connected to the 2P air switch QF2, the 2P air switch QF3, and the 2P air switch QR. The power supply terminals "L" and "N" are connected to the "L" and "N" of the switching power supply U1, the switching power supply U2, and the sockets 1, 2, and 3 after passing through the 2P air switch QF2, the 2P air switch QF3, and the 2P air switch QR; the 2P air switch QF2 is connected to the 24V switching power supply U1 below. After converting the AC 220V into DC 24V through the switching power supply U1, the lower side is connected to the 2P air switch QF4. The lower side of the 2P air switch QF4 is connected to the voice device 1 and the voice device 2. The "V+" of the switching power supply U1 is connected to the positive poles of the voice device 1 and the voice device 2, and the "V-" of the switching power supply U1 is connected to the negative poles of the voice device 1 and the voice device 2, and at the same time, DC 24V is output; the lower side of the 2P air switch QF3 is connected to the 5V switching power supply U2, and the switching power supply U2 converts the AC 220V into DC 5V for output; the 2P air switch QR is connected to the sockets 1, 2, and 3 below. The "L" output by the socket 1 is connected to the "L" of the clock display alarm device, and the "N" output by the socket 1 is connected to the "N" of the clock display alarm device.

[0024] Further, in the high-voltage incoming switchgear electrical circuit, the circuit uses a DC 24V power supply. DC24V+ is introduced into the "2" terminal of the shunt trip button SB2, and then led to the "4" terminal of the closing button SB1 and the "9" terminal of the self-locking point KA1 of the closing and tripping intermediate relay through the "1" terminal of the shunt trip button SB2. Then, through the lower side of the "3" terminal of the closing button SB1, it is connected to the normally closed node "9" terminal of the intermediate relay KA5.2, enters from the "1" terminal and exits, is connected to the normally closed node "9" terminal of the intermediate relay KA6.1, enters from the "1" terminal and exits, is connected to the normally closed node "9" terminal of the intermediate relay KA9.2, enters from the "1" terminal and exits, is connected to the normally closed node "9" terminal of the intermediate relay KA10.1, enters from the "1" terminal and exits, and after being short-circuited with the "5" terminal of the self-locking point KA1, is connected to the normally closed node "9" terminal of the intermediate relay KA2, enters from the "1" terminal and exits, is connected to the normally open node "9" terminal of the intermediate relay KA3, enters from the "9" terminal and exits from the "5" terminal, is connected to the normally closed node "9" terminal of the intermediate relay KA4, enters from the "1" terminal and exits, and then is connected to the "14" terminal of the closing and tripping relay KA1 coil, exits from the "13" terminal, and finally is connected to DC24V-;

[0025] DC24V+ is introduced into the normally open point "10" terminal of the closing and tripping intermediate relay KA1, enters from the "10" terminal and exits from the "6" terminal, is led to the "X2" terminal of the closing indicator light HL1, exits from the "X1" terminal, and then is connected to DC24V-;

[0026] Introduce DC24V+ into the normally closed contact "10" terminal of the closing and tripping intermediate relay KA1 and output from the "2" terminal, then lead it into the "X2" terminal of the tripping indicator light HL2 and output from the "X1" terminal, and then connect it to DC24V-.

[0027] Introduce DC24V+ into the "2" terminal of the tripping button SB4, then through the "1" terminal, and connect to the "4" terminal of the closing button SB3 and the "10" terminal of the fault reset self-locking KA2 respectively at the lower side. Then, through the "3" terminal of the closing button SB3 and the "6" terminal of the self-locking KA2, short-circuit and lead it into the "14" terminal of the fault reset intermediate relay KA2 coil and output from the "13" terminal, short-circuit and connect to DC24V-.

[0028] Introduce DC24V+ into the normally open contact "11" terminal of the closing and tripping intermediate relay KA2 and output from the "7" terminal, then lead it into the "X2" terminal of the fault indicator light HL3 and output from the "X1" terminal, and then connect it to DC24V-.

[0029] Introduce DC24V+ into the "2" terminal of the tripping button SB6, then through the "1" terminal, and connect to the "4" terminal of the closing button SB5 and the "10" terminal of the normally open node of the working position / test position intermediate relay self-locking KA3 respectively at the lower side. Then, through the "3" terminal of the closing button SB5 and the "6" terminal of the self-locking KA3, short-circuit and lead it into the "14" terminal of the working position / test position intermediate relay KA3 coil and output from the "13" terminal, short-circuit and connect to DC24V-.

[0030] Introduce DC24V+ into the normally open contact "11" terminal of the closing and tripping intermediate relay KA3 and output from the "7" terminal, then lead it into the "X2" terminal of the working position indicator light HL5 and output from the "X1" terminal, and then connect it to DC24V-.

[0031] Introduce DC24V+ into the normally closed contact "11" terminal of the closing and tripping intermediate relay KA3 and output from the "3" terminal, then lead it into the "X2" terminal of the test position indicator light HL6 and output from the "X1" terminal, and then connect it to DC24V-.

[0032] Introduce DC24V+ into the "2" terminal of the tripping button SB8, then through the "1" terminal, and connect to the "4" terminal of the closing button SB7 and the "10" terminal of the normally open node of the grounding switch closing and tripping intermediate relay self-locking KA4 respectively at the lower side. Then, through the "3" terminal of the closing button SB7 and the "6" terminal of the self-locking KA4, short-circuit and lead it into the "14" terminal of the grounding switch closing and tripping intermediate relay KA4 coil and output from the "13" terminal, short-circuit and connect to DC24V-.

[0033] Introduce DC24V+ into the normally open contact of the closing and tripping intermediate relay KA4 at terminal "11" and out at terminal "7", then lead it to terminal "X2" of the grounding knife closing indicator light HL7, out at terminal "X1", and then connect it to DC24V-.

[0034] Introduce DC24V+ into the normally closed contact of the closing and tripping intermediate relay KA4 at terminal "11" and out at terminal "3", then lead it to terminal "X2" of the grounding knife tripping indicator light HL8, out at terminal "X1", and then connect it to DC24V-.

[0035] The electrical circuit in the high-voltage transformer switch cabinet uses a DC24V power supply. Introduce DC24V+ into terminal "2" of the tripping button SB10, and then connect it to terminal "4" of the closing button SB9 and terminal "9" of the self-locking KA5.1 respectively through the lower side of terminal "1". Then, connect it in series with the normally closed nodes of K26.1 and KA29.1 through terminal "3" of SB9. Connect the normally closed node of KA29.1 at terminal "1" to terminal "5" of the self-locking KA5.1, and connect the lower side to terminal "9" of the working position / test position intermediate relay KA7. After short-circuiting through the normally open node "5" and the normally closed node "1" of the working position / test position intermediate relay KA7, lead it to terminal "11" of KA1 and terminal "11" of KA13, and lead out from terminal "7" of KA1 and KA13 respectively. Then, introduce it into the normally closed contact of the locking intermediate relay KA6.1 at terminal "11", and out at terminal "3" of the locking intermediate relay KA6.1, and connect it to the normally open contact of the locking intermediate relay KA21.1, in at terminal "9" and out at terminal "5", and connect it to the normally closed contacts of the locking intermediate relays KA22.1, KA25.1, KA27.1, KA30.1, KA44.1, KA17.1, KA18.1, and KA8, in at terminal "9" and out at terminal "1". Finally, connect them to the coil terminals "14" of the intermediate relays KA5.1 and KA5.2 respectively, in at terminal "14" and out at terminal "13", and short-circuit them and then connect to DC24V-.

[0036] Introduce DC24V+ into the normally open contact of the intermediate relay KA5.1 at terminal "10" and out at terminal "6", then lead it to terminal "X2" of the closing indicator lights HL9.1, HL9.2, and HL9.3. Then, short-circuit "X1" of HL9.1, HL9.2, and HL9.3 and connect it to DC24V-.

[0037] Introduce DC24V+ into the normally closed point of the intermediate relay KA5.1, enter from terminal "10" and exit from terminal "2", and lead it to terminal "X2" of the opening indicator light HL10. Then connect "X1" of HL10 to DC24V-.

[0038] Introduce DC24V+ into terminal "2" of the opening button SB12, then through terminal "1", and connect to terminal "4" of the closing button SB11 and terminal "12" of the self-locking KA6.1 respectively on the lower side. Then through terminal "3" of the closing button SB11 and terminal "8" of the self-locking KA6.1, short-circuit and lead it to the fault reset intermediate relay KA6.1 and the fault reset intermediate relay KA6.2. Enter from terminal "14" of the intermediate relay coil and exit from terminal "13", short-circuit and connect to DC24V-.

[0039] Introduce DC24V+ into terminal "9" of the normally open point of the intermediate relay KA6.2, enter and exit from terminal "6", lead it to terminal "X2" of the fault indicator light HL11, and then connect to DC24V- through terminal "X1" of the fault indicator light HL11.

[0040] Introduce DC24V+ into terminal "2" of the opening button SB12, then through terminal "1", and connect to terminal "4" of the closing button SB13 and terminal "10" of the self-locking KA7 respectively on the lower side. Then through terminal "3" of the closing button SB13 and terminal "6" of the self-locking KA7, short-circuit and lead it to the working position / test position intermediate relay KA7 coil. Enter from terminal "14" and exit from terminal "13", short-circuit and connect to DC24V-.

[0041] Introduce DC24V+ into terminal "11" of the normally open point of the intermediate relay KA7, enter and exit from terminal "7", lead it to terminal "X2" of the working position indicator light HL13, and then connect to DC24V- through terminal "X1" of the working position indicator light HL13.

[0042] Introduce DC24V+ into terminal "11" of the normally closed point of the intermediate relay KA7, enter and exit from terminal "3", lead it to terminal "X2" of the working position indicator light HL14, and then connect to DC24V- through terminal "X1" of the working position indicator light HL14.

[0043] Introduce DC24V+ into terminal "2" of the opening button SB16, then through terminal "1", and connect to terminal "4" of the closing button SB15 and terminal "10" of the self-locking KA8 respectively on the lower side. Then through terminal "3" of the closing button SB15 and terminal "6" of the self-locking KA8, short-circuit and lead it to the grounding knife closing-opening intermediate relay KA8 coil. Enter from terminal "14" and exit from terminal "13", short-circuit and connect to DC24V-.

[0044] Introduce DC24V+ into the normally open contact of the intermediate relay KA8 at terminal "11" and output from terminal "7", then lead it to terminal "X2" of the grounding knife closing indicator light HL15, and then connect it to DC24V- through terminal "X1" of the grounding knife closing indicator light HL15;

[0045] Introduce DC24V+ into the normally closed contact of the intermediate relay KA8 at terminal "11" and output from terminal "3", then lead it to terminal "X2" of the grounding knife opening indicator light HL16, and then connect it to DC24V- through terminal "X1" of the grounding knife opening indicator light HL16;

[0046] Furthermore, the electrical circuit in the transformer rectifier cabinet uses a DC 24V power supply. Introduce DC24V+ into terminal "2" of the opening button SB34, then through terminal "1", and connect to terminal "4" of the closing button SB33 and terminal "12" of the self-locking KA17.1 respectively at the lower side. Then connect through terminal "3" of the closing button SB33 and the normally open node "8" of the self-locking KA17.1, and lead to terminal "14" of the No. 1 transformer fault reset intermediate relay KA17.1 and terminal "14" of the No. 1 transformer fault reset intermediate relay KA17.2 respectively at the lower side, and lead out from terminal "13" of the No. 1 transformer fault reset intermediate relay KA17.1 and the No. 1 transformer fault reset intermediate relay KA17.2 respectively;

[0047] Introduce DC24V+ into the normally open contact of the intermediate relay KA17.2 at terminal "9" and output from terminal "5", then lead it to terminal "X2" of the No. 1 transformer fault indicator light HL33, and then connect to DC24V- through "X1" of the No. 1 transformer fault indicator light HL33;

[0048] Introduce DC24V+ into terminal "2" of the opening button SB36, then through terminal "1", and connect to terminal "4" of the closing button SB35 and the normally open node "12" of the self-locking KA18.1 respectively at the lower side. Then connect through terminal "3" of the closing button SB35 and terminal "8" of the self-locking KA18.1, short-circuit and lead to terminal "14" of the coil of the No. 1 rectifier cabinet fault reset intermediate relay KA18.1 and the coil of the No. 1 rectifier cabinet fault reset intermediate relay KA18.2, output from terminal "13", short-circuit and connect to DC24V-;

[0049] Introduce DC24V+ into the normally open contact of the intermediate relay KA18.2 at terminal "9" and output from terminal "5", then lead it to terminal "X2" of the No. 1 rectifier cabinet fault indicator light HL35, and then connect "X1" of the No. 1 rectifier cabinet fault indicator light HL35 to DC24V-;

[0050] Introduce DC24V+ to the "2" terminal of the opening button SB38, then through the "1" terminal, and connect to the "4" terminal of the closing button SB37 and the "12" terminal of the self-locking KA19.1 respectively at the lower side. Then, through the "3" terminal of the closing button SB37 and the "8" terminal of the self-locking KA19.1, short-circuit and lead to the "14" terminal of the coil of the 2nd transformer fault reset intermediate relay KA19.1 and the coil of the 2nd transformer fault reset intermediate relay KA19.2, and out from the "13" terminal. After short-circuiting, connect to DC24V-;

[0051] Introduce DC24V+ to the "9" terminal of the normally open contact of the intermediate relay KA19.2 and out from the "5" terminal, lead to the "X2" terminal of the 2nd transformer fault indicator HL37, and then connect to DC24V- through the "X1" terminal of the 2nd transformer fault indicator HL37;

[0052] Introduce DC24V+ to the "2" terminal of the opening button SB40, then through the "1" terminal, and connect to the "4" terminal of the closing button SB39 and the "12" terminal of the self-locking KA20.1 respectively at the lower side. Then, through the "3" terminal of the closing button SB39 and the "8" terminal of the self-locking KA20.1, short-circuit and lead to the "14" terminal of the coil of the 2nd rectifier cabinet fault reset intermediate relay KA20.1 and the coil of the 2nd rectifier cabinet fault reset intermediate relay KA20.2 respectively, and out from the "13" terminal. After short-circuiting, connect to DC24V-;

[0053] Introduce DC24V+ to the "9" terminal of the normally open contact of the intermediate relay KA20.2 and out from the "5" terminal, lead to the "X2" terminal of the 2nd rectifier cabinet fault indicator HL39, and then connect to DC24V- through the "X1" terminal of the 2nd rectifier cabinet fault indicator HL39;

[0054] Further, the electrical circuit in the DC voltage conversion cabinet uses a DC 24V power supply. After introducing DC24V+ to the normally closed nodes in series of intermediate relay KA5.1, intermediate relay KA9.1, intermediate relay KA17.1, intermediate relay KA18.1, intermediate relay KA19.1, intermediate relay KA20.1, intermediate relay KA26.1, intermediate relay KA29.1, intermediate relay KA32.1, intermediate relay KA35.1, intermediate relay KA38.1, intermediate relay KA25.1 and intermediate relay KX24.1, it is connected to the "2" terminal of the trip button SB46, then through the "1" terminal, and the lower side is respectively connected to the "4" terminal of the closing button SB45 and the "12" terminal of the self-locking KA23.1. Then, after short-circuiting through the "3" terminal of the closing button SB45 and the "8" terminal of KA23.1, it is led to the "14" terminal of the intermediate relay coils KA23.1, KA23.2, and KA23.3. Then, after short-circuiting the "13" terminals of the intermediate relay coils KA23.1, KA23.2, and KA23.3, it is connected to DC24V-, achieving the conversion of 750V bridge parallel connection;

[0055] After introducing DC24V+ to the normally closed nodes in series of intermediate relay KA5.1, intermediate relay KA9.1, intermediate relay KA17.1, intermediate relay KA18.1, intermediate relay KA19.1, intermediate relay KA20.1, intermediate relay KA26.1, intermediate relay KA29.1, intermediate relay KA32.1, intermediate relay KA35.1, intermediate relay KA38.1, intermediate relay KA25.1 and intermediate relay KX23.1, it is connected to the "2" terminal of the trip button SB45, then through the "1" terminal, and the lower side is respectively connected to the "4" terminal of the closing button SB46 and the "11" terminal of the self-locking KA24.1. Then, after short-circuiting through the "3" terminal of the closing button SB46 and the "7" terminal of the self-locking KA24.1, it is led to the "14" terminal of the intermediate relay coils KA24.1, KA24.2, and KA24.3. Then, after short-circuiting the "13" terminals of the intermediate relay coils KA24.1, KA24.2, and KA24.3, it is connected to DC24V-, achieving the conversion of 1500V bridge series connection;

[0056] Introduce DC24V+ to the "9" terminal of the normally open node of the intermediate relay KA23.2, and connect it to the "12" terminal of the normally open node of the intermediate relay KX24.1. Then connect through the "5" terminal of the normally open node of the intermediate relay KA23.2 and the "8" terminal of the normally open node of the intermediate relay KX24.1. After short-circuiting, lead it to the "X2" terminal of the indicator light HL45, and then connect to DC24V- through the "X1" terminal of the indicator light HL45;

[0057] Introduce DC24V+ into the "10" terminal of the normally open node of the intermediate relay KA23.2 and output from the "6" terminal, connect to the "11" terminal of the normally closed node of the intermediate relay KX24.2 and output from the "3" terminal, then lead it to the "X2" terminal of the indicator light HL46, and then connect to DC24V- through the "X1" terminal of the indicator light HL46. The indicator light will be on during bridge connection;

[0058] Introduce DC24V+ into the "9" terminal of the normally open node of the intermediate relay KA24.2 and output from the "5" terminal, connect to the "9" terminal of the normally closed node of the intermediate relay KX23.3 and output from the "1" terminal, then lead it to the "X2" terminal of the indicator light HL47, and then connect to DC24V- through the "X1" terminal of the indicator light HL47 to make the bridge-connected series indicator light on;

[0059] Introduce DC24V+ into the "11" terminal of the normally open node of the intermediate relay KA23.2 and output from the "7" terminal, connect to the "12" terminal of the normally closed node of the intermediate relay KX24.2 and output from the "4" terminal, then lead it to the "X2" terminal of the indicator light HL48, and then connect to DC24V- through the "X1" terminal of the indicator light HL48 to make the bridge-connected indicator light on;

[0060] Introduce DC24V+ to the "12" terminal of the normally open node of the intermediate relay KA23.2, short-circuit it with the "10" terminal of the normally open node of the intermediate relay KX24.2, then connect through the "8" terminal of the normally open node of the intermediate relay KA23.2 and the "6" terminal of the normally open node of the intermediate relay KX24.2, lead it to the "X2" terminal of the indicator light HL49, and then connect to DC24V- through the "X1" terminal of the indicator light HL49 to make the bridge-connected series indicator light on;

[0061] Introduce DC24V+ to the "2" terminal of the opening button SB51, then through the "1" terminal, and connect to the "3" terminal of the closing button SB50 and the "11" terminal of the self-locking KA25.2 respectively at the lower side. Then, after short-circuiting through the "4" terminal of the closing button SB50 and the "7" terminal of the self-locking KA25.2, lead it to the "X2" terminal of the intermediate relay coil KA25.1, the intermediate relay coil KA25.2, and the intermediate relay coil KA25.3. Then, after short-circuiting the "X1" terminals of the intermediate relay coil KA25.1, the intermediate relay coil KA25.2, and the intermediate relay coil KA25.3, connect it to DC24V- to achieve fault reset;

[0062] Introduce DC24V+ into the "12" terminal of the normally open contact of the intermediate relay KA25.1 and lead it out from the "8" terminal, then lead it to the "X2" terminal of the fault indicator HL50, and then connect it to DC24V- through the "X1" terminal of the fault indicator HL50. When a fault occurs, the indicator light will be on;

[0063] Further, in the electrical circuit of the DC incoming line cabinet, DC24V+ is introduced into terminal "2" of the opening button SB53, then through terminal "1", and respectively connected to terminal "4" of the closing button SB52 and terminal "9" of the normally open node of the self-locking KA26.2 at the lower side. Then, through terminal "3" of the closing button SB52, it is in series with the normally closed nodes of the intermediate relay KA32.1, the intermediate relay KA35.1, and the intermediate relay KA38.1. The intermediate relay KA32.1, the intermediate relay KA35.1, and the intermediate relay KA38.1 all have terminal "10" entering and terminal "2" exiting, connected to the normally open node of the intermediate relay KA26.2 with terminal "9" entering and terminal "5" exiting. After short-circuiting, it is connected to terminal "9" of the normally open node of the intermediate relay KA23.1 and terminal "9" of the normally open node of the intermediate relay KA24.1. Then, after short-circuiting through terminal "5" of the normally open node of the intermediate relay KA23.1 and terminal "5" of the normally open node of the intermediate relay KA24.1, it is led to terminal "9" of the normally open node of the intermediate relay KA42.1 and terminal "9" of the normally open node of the intermediate relay KA43.1. Then, through terminal "5" of the normally open node of the intermediate relay KA42.1 exiting and terminal "5" of the normally open node of the intermediate relay KA43.1 exiting, it is led to the normally open and normally closed nodes of the intermediate relay KA28, and then connected to the normally closed node of the locking intermediate relay KA22.1 with terminal "12" entering and terminal "4" exiting, connected to the normally open node of the intermediate relay KA21.2 with terminal "9" entering and terminal "5" exiting, connected to the normally closed node of the intermediate relay KA25.2 with terminal "9" entering and terminal "1" exiting, connected to the normally closed node of the intermediate relay KA44.1 with terminal "11" entering and terminal "3" exiting, connected to the normally closed point of the intermediate relay KA27.2 with terminal "9" entering and terminal "1" exiting. Finally, it is respectively connected to terminal "14" of the intermediate relay KA26.1, the intermediate relay coil KA26.2, and the intermediate relay coil KA26.3, with terminal "13" exiting. After short-circuiting, it is connected to DC24V-, realizing the closing of the incoming line cabinet;

[0064] DC24V+ is introduced into terminal "10" of the normally open point of the intermediate relay KA26.2, exiting from terminal "6", and led to terminal "X2" of the closing indicator light HL52. Then, through terminal "X1" of the closing indicator light HL52, it is connected to DC24V-, realizing that the indicator light is on during closing;

[0065] DC24V+ is introduced into terminal "10" of the normally closed point of the intermediate relay KA26.2, exiting from terminal "2", and led to terminal "X2" of the opening indicator light HL53. Then, through terminal "X1" of the opening indicator light HL53, it is connected to DC24V-, realizing that the indicator light is on during opening;

[0066] Introduce DC24V+ into terminal “2” of the opening button SB55, then through terminal “1”, and connect to terminal “4” of the closing button SB54 and terminal “11” of the self-locking KA27.1 respectively at the lower side. Then, after short-circuiting through terminal “3” of the closing button SB54 and terminal “7” of the self-locking KA27.1, lead it to terminal “X2” of the intermediate relay coil KA27.1 and the intermediate relay coil KA27.2, and then connect to DC24V- through terminal “X1” of the coils of KA27.1 and KA27.2 to achieve simulated fault reset;

[0067] Introduce DC24V+ into terminal “12” of the normally open contact of the intermediate relay KA27.1 and lead out from terminal “8”, then lead it to terminal “X2” of the fault indicator HL54, and then connect to DC24V- through terminal “X1” of the fault indicator HL54;

[0068] Introduce DC24V+ into terminal “2” of the opening button SB57, then through terminal “1”, and connect to terminal “4” of the closing button SB56 and terminal “10” of the self-locking KA28 respectively at the lower side. Then, after short-circuiting through terminal “3” of the closing button SB56 and terminal “6” of the self-locking KA28, lead it to terminal “14” of the intermediate relay coil KA28, and then connect to DC24V- through terminal “13” of the intermediate relay coil KA28 to achieve the closing command for the working position and test position;

[0069] Introduce DC24V+ into terminal “11” of the normally open contact of the intermediate relay KA28 and lead out from terminal “7”, then lead it to terminal “X2” of the working position indicator HL56, and then connect to DC24V- through terminal “X1” of the working position indicator HL54;

[0070] Introduce DC24V+ into terminal “11” of the normally closed contact of the intermediate relay KA28 and lead out from terminal “3”, then lead it to terminal “X2” of the test indicator HL57, and then connect to DC24V- through terminal “X1” of the test indicator HL57;

[0071] Further, the DC feeder cabinet electrical circuit introduces DC24V+ into terminal "2" of the opening button SB65, then through terminal "1", and is respectively connected to terminal "4" of the closing button SB64 and terminal "12" of the self-locking KA32.1 at the lower side. Then, it is connected in series with the normally closed node of the intermediate relay KA35.1 and the intermediate relay KA38.1 through terminal "3" of the closing button SB64. After being short-circuited with terminal "4" of the normally closed node of the intermediate relay KA38.1 and terminal "8" of the intermediate relay KA32.1, it is connected to the "9" in and "5" out of the normally open nodes of the intermediate relay KA45.1 and the intermediate relay KA48.1 at the lower side. Then, after short-circuiting terminal "5" of the intermediate relay KA45.1 and terminal "5" of the intermediate relay KA48.1, it is led to node "9" of the intermediate relay KA34. Then, after short-circuiting the normally open terminal "5" and the normally closed node "1", it is connected to the normally open node of the intermediate relay KA22.2, with terminal "12" in and terminal "2" out, and is connected in series with the normally open node of the intermediate relay KA21.2, with terminal "11" in and terminal "7" out; it is connected to terminal "9" of the intermediate relay KA25.3, with terminal "1" out; it is connected to the normally open node of the intermediate relay KA23.3, with terminal "10" in and terminal "6" out; it is connected to the normally closed node of the intermediate relay KA44.2, with terminal "9" in and terminal "1" out; it is connected to the normally open node of the intermediate relay KA42.1, with terminal "11" in and terminal "7" out; it is connected to the normally closed node of the intermediate relay KA51.1, with terminal "9" in and terminal "1" out; it is connected to the normally closed node of the intermediate relay KA52.1, with terminal "9" in and terminal "1" out; it is connected to the normally closed node of the intermediate relay KA53.1, with terminal "9" in and terminal "1" out; it is connected to the normally closed node of the intermediate relay KA33.1, with terminal "10" in and terminal "2" out; it is connected to the normally closed node of the intermediate relay KA47.1, with terminal "9" in and terminal "1" out, and is connected to the normally closed node of the intermediate relay KA50.1, with terminal "9" in and terminal "1" out. Finally, it is respectively connected to terminal "14" of the intermediate relay coils KA32.1, KA32.2, KA32.3, and KA32.4, with terminal "13" out, and after being short-circuited, it is connected to DC24V- to form a closing and opening circuit;

[0072] Introduce DC24V+ into the normally open point of the intermediate relay KA32.2, with terminal "10" in and terminal "6" out, lead it to terminal "X2" of the closing indicator light HL64, and then connect it to DC24V- through terminal "X1" of the closing indicator light HL64;

[0073] Introduce DC24V+ into the normally closed contact of intermediate relay KA32.2, enter from terminal "10", exit from terminal "2", lead to terminal "X2" of the opening indicator HL65, and then connect to DC24V- through terminal "X1" of the opening indicator HL65;

[0074] Introduce DC24V+ into terminal "2" of the opening button SB67, then through terminal "1", and connect to terminal "4" of the closing button SB66 and terminal "11" of the self-locking KA33.1 respectively on the lower side. Then, after short-circuiting through terminal "3" of the closing button SB66 and terminal "7" of the self-locking KA33.1, lead to terminal "14" of the intermediate relay coil KA33.1 and the intermediate relay coil KA33.2, and then connect to DC24V- through terminal "13" of the intermediate relay coil KA33.1 and the intermediate relay coil KA33.2 to achieve fault reset;

[0075] Introduce DC24V+ into the normally closed contact of intermediate relay KA33.1, enter from terminal "12", exit from terminal "8", lead to terminal "X2" of the test indicator HL66, and then connect to DC24V- through terminal "X1" of the test indicator HL66 to achieve fault indication;

[0076] Introduce DC24V+ into terminal "2" of the opening button SB69, then through terminal "1", and connect to terminal "4" of the closing button SB68 and terminal "10" of the self-locking KA34 respectively on the lower side. Then, after short-circuiting through terminal "3" of the closing button SB68 and terminal "6" of the self-locking KA34, lead to terminal "14" of the intermediate relay coil KA34, and then connect to DC24V- through terminal "13" of the intermediate relay coil KA4 to achieve indication of the working position and test position;

[0077] Introduce DC24V+ into the normally open contact of intermediate relay KA34, enter from terminal "11", exit from terminal "7", lead to terminal "X2" of the working indicator HL68, and then connect to DC24V- through terminal "X1" of the working indicator HL68 to achieve indication of the working position;

[0078] Introduce DC24V+ into the normally closed contact of intermediate relay KA34, enter from terminal "11", exit from terminal "3", lead to terminal "X2" of the test indicator HL69, and then connect to DC24V- through terminal "X1" of the test indicator HL69 to achieve indication of the test position;

[0079] Furthermore, the isolating switch electrical circuit of the DC power supply system introduces DC24V+ to terminal "2" of the opening button SB89, then through terminal "1", and is respectively connected to terminal "4" of the closing button SB88 and terminal "11" of the self-locking KA45.1 at the lower side. Then, through terminal "3" of the closing button SB88, it is connected in series with the normally closed nodes of the intermediate relay K32.3, intermediate relay KA35.3, intermediate relay KA44.3, intermediate relay KA47.1, and intermediate relay KA48.1. It is connected to the normally closed node of the intermediate relay KA32.3, with terminal "9" entering and terminal "1" exiting; connected to the normally closed node of the intermediate relay KA35.3, with terminal "9" entering and terminal "1" exiting; connected to the normally closed node of the intermediate relay KA44.3, with terminal "10" entering and terminal "2" exiting; connected to the normally closed node of the intermediate relay KA47.1, with terminal "11" entering and terminal "3" exiting; connected to the normally closed node of the intermediate relay KA48.1, with terminal "11" entering and terminal "3" exiting. After that, it is led to the short connection between terminal "10" of the normally open node of KA42.2 and terminal "9" of KA43.2. At the lower side, it is connected to the short connection of terminal "6" of the intermediate relay KA42.2, terminal "5" of KA43.2, and terminal "7" of the normally open node of KA45.1. It is connected to the normally closed node of KA46, with terminal "9" entering and terminal "1" exiting. Finally, it is respectively connected to terminal "14" of the intermediate relay coils KA45.1, intermediate relay coils KA45.2, and intermediate relay coils KA45.3, with terminal "13" exiting. After being short-circuited, it is connected to DC24V-, realizing the closing control of the isolating switch;

[0080] Introduce DC24V+ to terminal "12" of the normally open point of the intermediate relay KA45.1, with terminal "8" exiting, and lead it to terminal "X2" of the closing indicator light HL88. Then, through terminal "X1" of the closing indicator light HL88, it is connected to DC24V-, realizing the closing indication;

[0081] Introduce DC24V+ to the "2" terminal of the opening button SB88, then through the "1" terminal, and connect to the "4" terminal of the closing button SB89 and the "10" terminal of the self-locking KA46 respectively at the lower side. Then, connect to the "10" terminal of the normally closed node of the intermediate relay KA32.3 through the "3" terminal of the closing button SB89, enter from the "10" terminal and exit from the "2" terminal, connect to the "10" terminal of the normally closed node of the intermediate relay KA35.3, enter from the "10" terminal and exit from the "2" terminal, connect to the "12" terminal of the normally closed node of the intermediate relay KA47.1, enter from the "12" terminal and exit from the "4" terminal. Then, after short-circuiting with the "6" terminal of the normally open node of the intermediate relay KA46, connect to the "9" terminal of the normally closed node of the intermediate relay KA45.2, enter from the "9" terminal and exit from the "1" terminal, and finally lead to the "14" terminal of the coil of the intermediate relay KA46, and then connect to DC24V- through the "13" terminal of the coil of the intermediate relay KA46 to achieve opening control;

[0082] Introduce DC24V+ to the "11" terminal of the normally open point of the intermediate relay KA46, enter from the "11" terminal and exit from the "7" terminal, lead to the "X2" terminal of the opening indicator light HL89, and then connect to DC24V- through the "X1" terminal of the opening indicator light HL89 to achieve opening indication.

[0083] Introduce DC24V+ to the "2" terminal of the opening button SB91, then through the "1" terminal, and connect to the "4" terminal of the closing button SB90 and the "9" terminal of the self-locking KA47.2 respectively at the lower side. Then, connect to the "5" terminal of the normally closed node of the intermediate relay KA47.2 through the "3" terminal of the closing button SB90, short-circuit after that, and finally lead to the "14" terminals of the coils of the intermediate relay KA47.1 and the intermediate relay KA47.2, and then connect to DC24V- through the "13" terminals of the coils of the intermediate relay KA47.1 and the intermediate relay KA47.2 to achieve fault reset control;

[0084] Introduce DC24V+ to the "10" terminal of the normally open point of the intermediate relay KA47.2, enter from the "10" terminal and exit from the "6" terminal, lead to the "X2" terminal of the fault indicator light HL90, and then connect to DC24V- through the "X1" terminal of the fault indicator light HL90 to achieve fault indication.

[0085] Further, the electrical circuit in the negative electrode cabinet uses a DC 24V power supply. DC24V+ is introduced into the "2" terminal of the shunt trip button SB42, and then led to the "4" terminal of the closing button SB41 and the "11" terminal of the self-locking point KA21.1 of the intermediate relay through the "1" terminal of SB42. Then, it is connected to the normally closed node "11" terminal of the intermediate relay KA22.1 through the lower side of the "3" terminal of SB41, enters from the "11" terminal and exits from the "3" terminal, and is connected to the normally closed node "11" terminal of the intermediate relay KA5.1, enters from the "11" terminal and exits from the "3" terminal, and is connected to the normally closed node "11" terminal of the intermediate relay KA9.1, enters from the "11" terminal and exits from the "3" terminal, and is connected to the normally closed node "10" terminal of the intermediate relay KA17.1, enters from the "10" terminal and exits from the "2" terminal, and is connected to the normally closed node "10" terminal of the intermediate relay KA18.1, enters from the "10" terminal and exits from the "2" terminal, and is connected to the normally closed node "10" terminal of the intermediate relay KA19.1, enters from the "10" terminal and exits from the "2" terminal, and is connected to the normally closed node "10" terminal of the intermediate relay KA20.1, enters from the "10" terminal and exits from the "2" terminal, and is connected to the normally closed node "11" terminal of the intermediate relay KA25.1, enters from the "11" terminal and exits from the "3" terminal, and is connected to the normally closed node "11" terminal of the intermediate relay KA26.1, enters from the "11" terminal and exits from the "3" terminal, and is connected to the normally closed node "11" terminal of the intermediate relay KA29.1, enters from the "11" terminal and exits from the "3" terminal. After being short-circuited with the "7" terminal of the normally open node of the self-locking point KA21.1, it is respectively connected to the "14" terminal of the closing intermediate relay coil KA21.1, the closing intermediate relay coil KA21.2, and the closing intermediate relay coil KA21.3, enters from the "14" terminal and exits from the "13" terminal, and finally connected to DC24V-.

[0086] DC24V+ is introduced into the "12" terminal of the normally open point of the closing and shunt trip intermediate relay KA21.1, enters from the "12" terminal and exits from the "8" terminal, and is led to the "X1" terminal of the closing indicator light HL41, exits from the "X0" terminal, and then connected to DC24V-;

[0087] DC24V+ is introduced into the "12" terminal of the normally closed point of the closing and shunt trip intermediate relay KA21.1, enters from the "12" terminal and exits from the "4" terminal, and is led to the "X2" terminal of the shunt trip indicator light HL42, enters from the "X2" terminal and exits from the "X0" terminal, and then connected to DC24V-;

[0088] Introduce DC24V+ to terminal "2" of the opening button SB44, then through terminal "1", and connect to terminal "4" of the closing button SB43 and terminal "10" of the fault reset self-locking KA22.2 on the lower side respectively. Then, through terminal "3" of the closing button SB43 and terminal "6" of the self-locking KA22.2, after short-circuiting, lead to terminal "14" of the fault reset intermediate relay coil KA22.1, the fault reset intermediate relay coil KA22.2, and the fault reset intermediate relay coil KA22.3 respectively, and out through terminal "13". After short-circuiting, connect to DC24V-.

[0089] Introduce DC24V+ to terminal "11" of the normally open contact of the closing and opening intermediate relay KA22.2 and out through terminal "7", then lead to terminal "X2" of the fault indicator HL43, out through terminal "X1", and then connect to DC24V-.

[0090] Furthermore, the electrical circuit in the energy consumption braking cabinet uses a DC24V power supply. Introduce DC24V+ to terminal "2" of the opening button SB77, then through terminal "1" of SB77 to terminal "4" of the closing button SB76 and terminal "10" of the self-locking point of the intermediate relay KA38.2. After short-circuiting through terminal "3" of SB76 and terminal "6" of the self-locking point KA38.2, connect to terminal "11" of the normally open nodes of the intermediate relay KA32.2 and the intermediate relay KA35.2 on the lower side respectively, and out through terminal "7" of the normally open nodes of the intermediate relay KA32.2 and the intermediate relay KA35.2. Then lead to terminal "9" of the normally closed node of the intermediate relay KA40 and in. Then, after short-circuiting through terminal "5" of the normally open node and terminal "1" of the normally closed node of KA40, connect to terminal "3" of the normally closed node of the intermediate relay KA53.1 and in, out through terminal "11". Connect to terminal "3" of the normally closed node of the intermediate relay KA52.1 and in, out through terminal "11". Connect to terminal "3" of the normally closed node of the intermediate relay KA51.1 and in, out through terminal "11". Connect to terminal "9" of the normally closed node of the intermediate relay KA41 and in, out through terminal "1". Connect to terminal "9" of the normally closed node of the intermediate relay KA39 and in, out through terminal "1". Connect to terminal "9" of the normally closed node of the intermediate relay KA33.2 and in, out through terminal "1". Connect to terminal "9" of the normally closed node of the intermediate relay KA36.2 and in, out through terminal "1". Then lead to terminal "14" of the closing and opening intermediate relay coil KA38.1 and the closing and opening intermediate relay coil KA38.2 and in, out through terminal "13". After short-circuiting, connect to DC24V-.

[0091] Introduce DC24V+ into the normally open contact of the intermediate relay KA38.2 at terminal "11" and output at terminal "7", then lead it to terminal "X1" of the closing indicator light HL76.1 and the closing indicator light HL76.2, and output at terminal "X0", then connect it to DC24V-.

[0092] Introduce DC24V+ into the normally closed contact of the intermediate relay KA38.2 at terminal "11" and output at terminal "3", then lead it to terminal "X2" of the opening indicator light HL77, output at terminal "X0", then connect it to DC24V-.

[0093] Introduce DC24V+ into terminal "2" of the opening button SB79, then through terminal "1", and respectively connect to terminal "4" of the closing button SB78 and terminal "10" of the fault reset self-locking KA39 at the lower side. Then through terminal "3" of the closing button SB78 and terminal "6" of the self-locking KA39, after short-circuiting, respectively lead it to terminal "14" of the fault reset intermediate relay coil KA39 and output at terminal "13", after short-circuiting, connect it to DC24V-.

[0094] Introduce DC24V+ into the normally open contact of the intermediate relay KA39 at terminal "11" and output at terminal "7", then lead it to terminal "X2" of the fault indicator light HL78, output at terminal "X1", then connect it to DC24V-.

[0095] Introduce DC24V+ into terminal "2" of the opening button SB81, then through terminal "1", and respectively connect to terminal "4" of the closing button SB80 and terminal "10" of the self-locking KA40 at the lower side. Then through terminal "3" of the closing button SB80 and terminal "6" of the self-locking KA40 after short-circuiting, lead it to terminal "14" of the working position test position intermediate relay coil KA40 and output at terminal "13", after short-circuiting, connect it to DC24V-.

[0096] Introduce DC24V+ into the normally open contact of the intermediate relay KA40 at terminal "11" and output at terminal "7", then lead it to terminal "X1" of the working position indicator light HL80, output at terminal "X0", then connect it to DC24V-.

[0097] Introduce DC24V+ into the normally closed contact of the intermediate relay KA40 at terminal "11" and output at terminal "3", then lead it to terminal "X2" of the test position indicator light HL81, output at terminal "X0", then connect it to DC24V-.

[0098] Further, it is possible that the power supply of the busbar and the test line in the electrical circuit adopts a DC 5V power supply. Connect the DC 5V+ to the normally open node "10" terminal of the intermediate relay KA21.3 and output from the "6" terminal, then connect it to the negative light strip of the L1 test line, input from "2" and output from "1", and finally lead it to the DC 5V-.

[0099] Connect the DC 5V+ to the normally open node "12" terminal of the intermediate relay KA23.3 and the normally open node "11" terminal of the intermediate relay KA24.3 respectively. After short-circuiting the "8" terminal of KA23.3 and the "7" terminal of KA24.3, connect it to the negative light strip of the L2 DC busbar, input from "2" and output from "1", and finally lead it to the DC 5V-.

[0100] Connect the DC 5V+ to the normally open node "10" terminal of the intermediate relay KA26.3 and the normally open node "10" terminal of the intermediate relay KA29.3 respectively. After short-circuiting the "6" terminal of KA26.3 and the "6" terminal of KA29.3, connect it to the positive light strip of the L3 DC busbar, input from "2" and output from "1", and finally lead it to the DC 5V-.

[0101] Connect the DC 5V+ to the normally open node "11" terminal of the intermediate relay KA32.4 and the normally open node "11" terminal of the intermediate relay KA35.4 respectively. After short-circuiting the "7" terminal of KA32.4 and the "7" terminal of KA35.4, connect it to the normally open node "9" terminal of the intermediate relay KA45.3, input from "9" and output from "5", then connect it to the three-rail power supply light strip of the L4 test line, input from "2" and output from "1", and finally lead it to the DC 5V-.

[0102] Connect the DC 5V+ to the normally open node "12" terminal of the intermediate relay KA32.4 and the normally open node "12" terminal of the intermediate relay KA35.4 respectively. After short-circuiting the "8" terminal of KA32.4 and the "8" terminal of KA35.4, connect it to the normally open node "9" terminal of the intermediate relay KA48.3, input from "9" and output from "5", then connect it to the catenary power supply light strip of the L5 test line, input from "2" and output from "1", and finally lead it to the DC 5V-.

[0103] The power supply system simulation training device for urban rail test lines provides a safe practical operation platform. Through simulation technology, the training device can simulate the real operation scenarios of DC power supply systems, avoiding the safety hazards of strong electricity (DC750V / 1500V / 3000V) in the real power supply environment during the training process of employees. It ensures that employees can conduct training teaching and practical operation drills in a safe environment (the control circuit of the training device is DC24v). At the same time, the device is simple, light, easy to move and transport, and can meet the need for personnel training anytime and anywhere. With this device, the training of maintenance personnel is no longer restricted by the venue, greatly improving the training efficiency and enhancing the training effect. The conventional relay control adopted has strong versatility and stable performance, and has great popularization value. Description of the Drawings

[0104] Figure 1 is the functional block diagram of the DC power supply system simulation device for urban rail test lines implemented according to the present utility model;

[0105] Figure 2 is the electrical schematic diagram of the control power supply of the training simulation device for urban rail test lines implemented according to the present utility model.

[0106] Figure 3 is the electrical schematic diagram of the high-voltage transformer switch cabinet of the training simulation device for urban rail test lines implementing the 10KV high-voltage switch cabinet and the 10KV high-voltage switch cabinet button station according to the device of the present utility model;

[0107] Figure 4 is the electrical schematic diagram of the transformer rectifier cabinet of the training simulation device for urban rail test lines implementing the "transformer rectifier cabinet and the transformer rectifier cabinet button station according to the device of the present utility model;

[0108] Figure 5 is the electrical schematic diagram of the DC voltage conversion cabinet of the training simulation device for urban rail test lines implementing the DC switch cabinet and the DC switch cabinet button station according to the device of the present utility model;

[0109] Figure 6 is the electrical schematic diagram of the DC incoming line cabinet of the training simulation device for urban rail test lines implementing the DC switch cabinet and the DC switch cabinet button station according to the device of the present utility model;

[0110] Figure 7 is the electrical schematic diagram of the DC feeder cabinet of the training simulation device for urban rail test lines implementing the DC switch cabinet and the DC switch cabinet button station according to the device of the present utility model;

[0111] Figure 8 is the electrical schematic diagram of the disconnector of the DC power supply system from the urban rail of the test line to the training simulation device of the test line according to the device of the present utility model;

[0112] Figure 9It is the electrical circuit of the high-voltage incoming switch cabinet of the urban rail test line training simulation device for implementing the 10KV high-voltage switch cabinet and the 10KV high-voltage switch cabinet button station according to the device of the present utility model;

[0113] Figure 10 It is the electrical circuit of the negative electrode cabinet of the urban rail test line training simulation device for implementing the DC switch cabinet and the DC switch cabinet button station according to the device of the present utility model;

[0114] Figure 11 It is the electrical circuit of the energy consumption braking cabinet of the urban rail test line training simulation device for implementing the DC switch cabinet and the DC switch cabinet button station according to the device of the present utility model;

[0115] Figure 12 It is the electrical circuit of the DC power supply system bus and the test line power transmission visual energy of the urban rail to the test line training simulation device implemented according to the device of the present utility model;

[0116] Figure 13 It is the schematic diagram of the DC power supply system. Specific implementation mode

[0117] Refer to Figure 1 : Composition of the DC power supply system: The device is made by assembling and processing five boxes 5 with a length of 800mm * width of 800mm * height of 2200mm in parallel. The left part of the box 5 is the simulated DC power supply system, and the right part is the clock and button station.

[0118] (1) Left side of the box 5: It is composed of a simulated 10KV high-voltage cabinet 1, a transformer rectifier cabinet 2, a DC switch cabinet 3, and a test line 4. Among them:

[0119] 10KV high-voltage switch cabinet 1: It includes 4 high-voltage switch cabinets (H01, H02, H03, H04). Among them, H01 and H04 are high-voltage incoming switch cabinets, with the same circuit design and functions. Among them, H02 and H03 are high-voltage transformer switch cabinets, with the same circuit design and functions.

[0120] Transformer rectifier cabinet 2: It includes 2 transformers (1# transformer, 2# transformer) and two rectifier cabinets (1# rectifier cabinet, 2# rectifier cabinet);

[0121] DC switch cabinet 3: It includes a 750 / 1500V voltage conversion cabinet, an incoming line cabinet, a feeder cabinet, a negative electrode cabinet, an energy consumption braking cabinet, and a disconnector;

[0122] Test line: It includes a catenary, a contact rail, and a return rail.

[0123] (2) Right side of the box 5: It is composed of a timing display device (clock 9), a 10KV high-voltage cabinet button station 8, a transformer rectifier cabinet button station 7, and a DC switch cabinet button station 6;

[0124] The described timing display device is used for timing display during training assessment and countdown voice warning.

[0125] The button stations of the 10KV high-voltage switch cabinet 8, the transformer rectifier cabinet button station 7, and the DC switch cabinet button station 6: are mainly used to simulate the power-on and power-off operations between the 10KV high-voltage switch cabinet 1, the transformer rectifier cabinet 2, and the DC switch cabinet 3, as well as the control and fault handling of more than 40 kinds of electrical interlock relationships.

[0126] The components of this device include: a box body 5, a timing display device, an intermediate relay, a square position indicator light, a switching power supply, an air switch, a self-resetting lighted button, and a voice broadcast device, etc.

[0127] In this device, electrical components such as the intermediate relay, square position indicator light, switching power supply, indicator light, air switch, timing display, self-resetting lighted button, and voice broadcast device are connected by control lines to form an operation, control, and display system. According to the electrical control principle of the simulated DC power supply system, the logical control between the electrical equipment of the DC power supply system is realized.

[0128] Analysis of the working principle and composition of this training simulation device.

[0129] This device simulates the working principle of the DC power supply system in a real scenario:

[0130] The 10KV high-voltage electricity reaches the 10KV bus through the H01 switch of the 10KV high-voltage incoming switch cabinet - close the H02 and H03 switches of the 10KV high-voltage transformer switch cabinet - send the 10KV high-voltage electricity to the #1 transformer and #2 transformer to step down the 10KV high-voltage electricity to 610V - introduce the #1 rectifier cabinet and #2 rectifier cabinet - then two three-phase bridge rectifier circuit groups are connected in parallel to form a 24-pulse rectification output of 750V - through the series and parallel output of the 750 / 1500V voltage conversion cabinet to form a DC voltage of 1500V / 750V;

[0131] The positive pole of the DC 1500V / 750V voltage - through the DC incoming cabinet - DC bus - DC feeder cabinet and energy consumption braking cabinet - test line catenary / contact rail - for vehicle traction and braking;

[0132] The negative pole of the DC 1500V / 750V voltage - through the DC negative cabinet - test line running rail - through the vehicle - to form a power supply loop with the test line catenary / contact rail;

[0133] When a moving vehicle brakes on the line - the rolling stock converts kinetic energy into electrical energy - and feeds it back to the power grid - causing the grid voltage to rise - when it is higher than the conduction set value of the chopper in the energy consumption braking cabinet - the chopper is put into operation - to absorb the excess energy generated - and maintain the grid voltage constant - when it is lower than the set value - the energy consumption braking cabinet exits - to ensure the safe and smooth progress of the line vehicle test.

[0134] The above-mentioned devices are connected through a circuit, which includes a control power supply circuit, a high-voltage incoming switchgear electrical circuit, a high-voltage transformer switchgear electrical circuit, a transformer rectifier cabinet electrical circuit, a DC voltage conversion cabinet electrical circuit, a DC incoming cabinet electrical circuit, a DC feeder cabinet electrical circuit, a DC power supply system disconnector electrical circuit, a negative pole cabinet electrical circuit, an energy consumption braking cabinet electrical circuit, and a bus and test line power transmission visible energy electrical circuit;

[0135] The described control power supply circuit realizes the output and distribution of power through the control loop;

[0136] The high-voltage transformer switchgear electrical circuit through this control loop simulates the opening and closing states, opening and closing indications, working position and test position states, earthing switch opening and closing, and fault simulation of the 10KV high-voltage switchgear;

[0137] The transformer rectifier cabinet electrical circuit through this control loop simulates the electrical interlock control of the transformer rectifier cabinet;

[0138] The DC voltage conversion cabinet electrical circuit through this control loop realizes the DC 750V / 1500V voltage conversion control, signal indication, and electrical interlock control by simulating bridge series and bridge parallel outputs;

[0139] The DC incoming cabinet electrical circuit through this control loop simulates the opening and closing states, opening and closing indications, working position and test position states, and fault simulation of the DC incoming switchgear;

[0140] The DC feeder cabinet electrical circuit through this control loop simulates the opening and closing states, opening and closing indications, working position and test position states, and fault simulation of the DC feeder switchgear;

[0141] The DC power supply system disconnector electrical circuit through this control loop simulates the opening and closing states, opening and closing indications, working position and test position states, and fault simulation of the disconnector;

[0142] The high-voltage incoming switchgear electrical circuit through this control loop simulates the opening and closing states, opening and closing indications, working position and test position states, earthing switch opening and closing, and fault simulation of the 10KV high-voltage incoming switchgear;

[0143] The negative pole cabinet electrical circuit realizes the simulation of the closing and opening states, closing and opening indications, fault reset, and fault indication of the negative pole switch cabinet through this control loop.

[0144] The energy consumption braking cabinet electrical circuit realizes the simulation of the closing and opening states, closing and opening indications, working position and test position states, and working position and test position indications of the 10KV high-voltage incoming switch cabinet through this control loop.

[0145] The bus and test line power transmission visible energy electrical circuit realizes the simulation of the negative pole light strip of the test line, the negative pole light strip of the DC bus, the positive pole light strip of the DC bus, the three-rail power supply light strip of the test line, and the catenary power supply light strip of the test line through this control loop.

[0146] Further, in the control power circuit, the single-phase 220V power supply is connected to the upper side of the air switch QF1. The lower sides of the 2P air switch QF1 are respectively connected to the 2P air switch QF2, the 2P air switch QF3, and the 2P air switch QR. The power supply terminals "L" and "N" are connected to the "L" and "N" of the switching power supply U1, the switching power supply U2, the socket 1, the socket 2, and the socket 3 after passing through the 2P air switch QF2, the 2P air switch QF3, and the 2P air switch QR. The 2P air switch QF2 is connected to the 24V switching power supply U1 below. After converting the AC 220V to DC 24V through the switching power supply U1, the lower side is connected to the 2P air switch QF4. The lower side of the 2P air switch QF4 is connected to the voice device 1 and the voice device 2. The "V+" of the switching power supply U1 is connected to the positive poles of the voice device 1 and the voice device 2, and the "V-" of the switching power supply U1 is connected to the negative poles of the voice device 1 and the voice device 2, and at the same time, DC 24V is output. The lower side of the 2P air switch QF3 is connected to the 5V switching power supply U2, and the switching power supply U2 converts the AC 220V to DC 5V for output. The 2P air switch QR is connected to the socket 1, the socket 2, and the socket 3 below. The "L" output by the socket 1 is connected to the "L" of the clock display alarm device, and the "N" output by the socket 1 is connected to the "N" of the clock display alarm device.

[0147] Furthermore, the circuit in the high-voltage incoming switchgear electrical circuit uses a DC 24V power supply. DC24V+ is introduced into the "2" terminal of the opening button SB2, and then led to the "4" terminal of the closing button SB1 and the "9" terminal of the self-locking point KA1 of the closing-opening intermediate relay through the "1" terminal of the opening button SB2. Then, it is connected to the normally closed node "9" terminal of the intermediate relay KA5.2 through the lower side of the "3" terminal of the closing button SB1, exits from the "1" terminal, and is connected to the normally closed node "9" terminal of the intermediate relay KA6.1, exits from the "1" terminal, and is connected to the normally closed node "9" terminal of the intermediate relay KA9.2, exits from the "1" terminal, and is connected to the normally closed node "9" terminal of the intermediate relay KA10.1, exits from the "1" terminal, and after being short-circuited with the "5" terminal of the self-locking point KA1, is connected to the normally closed node "9" terminal of the intermediate relay KA2, exits from the "1" terminal, and is connected to the normally open node "9" terminal of the intermediate relay KA3, exits from the "5" terminal, and is connected to the normally closed node "9" terminal of the intermediate relay KA4, exits from the "1" terminal, and then connected to the "14" terminal of the closing-opening relay KA1 coil, exits from the "13" terminal, and finally connected to DC24V-.

[0148] DC24V+ is introduced into the "10" terminal of the normally open point of the closing-opening intermediate relay KA1, exits from the "6" terminal, and is led to the "X2" terminal of the closing indicator light HL1, exits from the "X1" terminal, and then connected to DC24V-.

[0149] DC24V+ is introduced into the "10" terminal of the normally closed point of the closing-opening intermediate relay KA1, exits from the "2" terminal, and is led to the "X2" terminal of the opening indicator light HL2, enters from the "X1" terminal, and then connected to DC24V-.

[0150] DC24V+ is introduced into the "2" terminal of the opening button SB4, and then through the "1" terminal, the lower side is respectively connected to the "4" terminal of the closing button SB3 and the "10" terminal of the fault reset self-locking KA2. Then, through the "3" terminal of the closing button SB3 and the "6" terminal of the self-locking KA2, after being short-circuited, it is led to the "14" terminal of the fault reset intermediate relay KA2 coil, enters from the "13" terminal, and after being short-circuited, is connected to DC24V-.

[0151] DC24V+ is introduced into the "11" terminal of the normally open point of the closing-opening intermediate relay KA2, exits from the "7" terminal, and is led to the "X2" terminal of the fault indicator light HL3, exits from the "X1" terminal, and then connected to DC24V-.

[0152] Introduce DC24V+ to terminal "2" of the opening button SB6, then through terminal "1", and connect to terminal "4" of the closing button SB5 and terminal "10" of the normally open node of the self-locking KA3 of the working position / test position intermediate relay at the lower side respectively. Then, through terminal "3" of the closing button SB5 and terminal "6" of the self-locking KA3, short-circuit and lead to terminal "14" of the coil of the working position / test position intermediate relay KA3 for input, and terminal "13" for output. After short-circuiting, connect to DC24V-;

[0153] Introduce DC24V+ to terminal "11" of the normally open point of the closing and opening intermediate relay KA3 for input, and terminal "7" for output, lead to terminal "X2" of the working position indicator light HL5, and terminal "X1" for output, then connect to DC24V-;

[0154] Introduce DC24V+ to terminal "11" of the normally closed point of the closing and opening intermediate relay KA3 for input, and terminal "3" for output, lead to terminal "X2" of the test position indicator light HL6 for input, and terminal "X1" for output, then connect to DC24V-;

[0155] Introduce DC24V+ to terminal "2" of the opening button SB8, then through terminal "1", and connect to terminal "4" of the closing button SB7 and terminal "10" of the normally open node of the self-locking KA4 of the grounding switch closing and opening intermediate relay at the lower side respectively. Then, through terminal "3" of the closing button SB7 and terminal "6" of the self-locking KA4, short-circuit and lead to terminal "14" of the coil of the grounding switch closing and opening intermediate relay KA4 for input, and terminal "13" for output. After short-circuiting, connect to DC24V-;

[0156] Introduce DC24V+ to terminal "11" of the normally open point of the closing and opening intermediate relay KA4 for input, and terminal "7" for output, lead to terminal "X2" of the grounding switch closing indicator light HL7, and terminal "X1" for output, then connect to DC24V-;

[0157] Introduce DC24V+ to terminal "11" of the normally closed point of the closing and opening intermediate relay KA4 for input, and terminal "3" for output, lead to terminal "X2" of the grounding switch opening indicator light HL8 for input, and terminal "X1" for output, then connect to DC24V-;

[0158] In the electrical circuit of the high-voltage transformer switch cabinet described above, the circuit uses a DC 24V power supply. DC24V+ is introduced into the "2" terminal of the opening button SB10, and then is respectively connected to the "4" terminal of the closing button SB9 and the "9" terminal of the self-locking KA5.1 through the lower side of the "1" terminal. Then, it is connected in series with the normally closed nodes of K26.1 and KA29.1 through the "3" terminal of SB9, and is connected to the "5" terminal of the self-locking KA5.1 through the "1" terminal of the normally closed node of KA29.1. The lower side is connected to the "9" terminal of the working position / test position intermediate relay KA7. After being short-circuited by the normally open node "5" of the working position / test position intermediate relay KA7 and the normally closed node "1" of the working position / test position intermediate relay KA7, it is led to the "11" terminals of KA1 and KA13, and is respectively led out from the "7" terminals of KA1 and KA13. Then, it enters through the normally closed point "11" terminal of the interlock intermediate relay KA6.1 and exits from the "3" terminal of the interlock intermediate relay KA6.1, and is connected to the normally open point of the interlock intermediate relay KA21.1, enters from the "9" terminal and exits from the "5" terminal, and is connected to the normally closed points of the interlock intermediate relays KA22.1, KA25.1, KA27.1, KA30.1, KA44.1, KA17.1, KA18.1, and KA8, enters from the "9" terminal and exits from the "1" terminal. Finally, it is respectively connected to the "14" terminals of the coils of the intermediate relays KA5.1 and KA5.2, exits from the "13" terminal, and is short-circuited and then connected to DC24V-;

[0159] DC24V+ is introduced into the "10" terminal of the normally open point of the intermediate relay KA5.1 and exits from the "6" terminal, and is led to the "X2" terminals of the closing indicator lights HL9.1, HL9.2, and HL9.3. Then, the "X1" terminals of HL9.1, HL9.2, and HL9.3 are short-circuited and then connected to DC24V-;

[0160] DC24V+ is introduced into the "10" terminal of the normally closed point of the intermediate relay KA5.1 and exits from the "2" terminal, and is led to the "X2" terminal of the opening indicator light HL10. Then, the "X1" terminal of HL10 is connected to DC24V-;

[0161] Introduce DC24V+ to the "2" terminal of the opening button SB12, then through the "1" terminal, and connect to the "4" terminal of the closing button SB11 and the "12" terminal of the self-locking KA6.1 respectively on the lower side. Then, through the "3" terminal of the closing button SB11 and the "8" terminal of the self-locking KA6.1, short-circuit and lead to the "14" terminal of the coil of the fault reset intermediate relay KA6.1 and the fault reset intermediate relay KA6.2, and out from the "13" terminal. After short-circuiting, connect to DC24V-.

[0162] Introduce DC24V+ to the "9" terminal of the normally open contact of the intermediate relay KA6.2 and out from the "6" terminal, lead to the "X2" terminal of the fault indicator light HL11, and then connect to DC24V- through the "X1" terminal of the fault indicator light HL11.

[0163] Introduce DC24V+ to the "2" terminal of the opening button SB12, then through the "1" terminal, and connect to the "4" terminal of the closing button SB13 and the "10" terminal of the self-locking KA7 respectively on the lower side. Then, through the "3" terminal of the closing button SB13 and the "6" terminal of the self-locking KA7, short-circuit and lead to the "14" terminal of the coil of the working position / test position intermediate relay KA7, and out from the "13" terminal. After short-circuiting, connect to DC24V-.

[0164] Introduce DC24V+ to the "11" terminal of the normally open contact of the intermediate relay KA7 and out from the "7" terminal, lead to the "X2" terminal of the working position indicator light HL13, and then connect to DC24V- through the "X1" terminal of the working position indicator light HL13.

[0165] Introduce DC24V+ to the "11" terminal of the normally closed contact of the intermediate relay KA7 and out from the "3" terminal, lead to the "X2" terminal of the working position indicator light HL14, and then connect to DC24V- through the "X1" terminal of the working position indicator light HL14.

[0166] Introduce DC24V+ to the "2" terminal of the opening button SB16, then through the "1" terminal, and connect to the "4" terminal of the closing button SB15 and the "10" terminal of the self-locking KA8 respectively on the lower side. Then, through the "3" terminal of the closing button SB15 and the "6" terminal of the self-locking KA8, short-circuit and lead to the "14" terminal of the coil of the grounding switch closing and opening intermediate relay KA8, and out from the "13" terminal. After short-circuiting, connect to DC24V-.

[0167] Introduce DC24V+ to the "11" terminal of the normally open contact of the intermediate relay KA8 and out from the "7" terminal, lead to the "X2" terminal of the grounding switch closing indicator light HL15, and then connect to DC24V- through the "X1" terminal of the grounding switch closing indicator light HL15.

[0168] Introduce DC24V+ into the normally closed contact “terminal 11” of the intermediate relay KA8 and lead it out from “terminal 3”, then lead it to the “X2” terminal of the grounding knife opening indicator light HL16, and then connect it to DC24V- through the “X1” terminal of the grounding knife opening indicator light HL16;

[0169] Furthermore, the electrical circuit in the transformer rectifier cabinet uses a DC 24V power supply. Introduce DC24V+ into the “terminal 2” of the opening button SB34, then through “terminal 1”, and connect to the “terminal 4” of the closing button SB33 and the “terminal 12” of the self-locking KA17.1 respectively at the lower side. Then connect through the “terminal 3” of the closing button SB33 and the normally open contact “terminal 8” of the self-locking KA17.1, and lead to the “terminal 14” of the No. 1 transformer fault reset intermediate relay KA17.1 and the “terminal 14” of the No. 1 transformer fault reset intermediate relay KA17.2 respectively at the lower side, and lead out from the “terminal 13” of the No. 1 transformer fault reset intermediate relay KA17.1 and the No. 1 transformer fault reset intermediate relay KA17.2 respectively;

[0170] Introduce DC24V+ into the normally open contact “terminal 9” of the intermediate relay KA17.2 and lead it out from “terminal 5”, then lead it to the “X2” terminal of the No. 1 transformer fault indicator light HL33, and then connect to DC24V- through the “X1” of the No. 1 transformer fault indicator light HL33;

[0171] Introduce DC24V+ into the “terminal 2” of the opening button SB36, then through “terminal 1”, and connect to the “terminal 4” of the closing button SB35 and the normally open contact “terminal 12” of the self-locking KA18.1 respectively at the lower side. Then connect through the “terminal 3” of the closing button SB35 and the “terminal 8” of the self-locking KA18.1, and after short-circuiting, lead it to the “terminal 14” of the No. 1 rectifier cabinet fault reset intermediate relay coil KA18.1 and the No. 1 rectifier cabinet fault reset intermediate relay coil KA18.2 and lead it out from “terminal 13”, and after short-circuiting, connect to DC24V-;

[0172] Introduce DC24V+ into the normally open contact “terminal 9” of the intermediate relay KA18.2 and lead it out from “terminal 5”, then lead it to the “X2” terminal of the No. 1 rectifier cabinet fault indicator light HL35, and then connect the “X1” of the No. 1 rectifier cabinet fault indicator light HL35 to DC24V-;

[0173] Introduce DC24V+ to the "2" terminal of the opening button SB38, then through the "1" terminal, and connect to the "4" terminal of the closing button SB37 and the "12" terminal of the self-locking KA19.1 respectively at the lower side. Then, through the "3" terminal of the closing button SB37 and the "8" terminal of the self-locking KA19.1, short-circuit and lead to the "14" terminal of the coil of the 2# transformer fault reset intermediate relay KA19.1 and the coil of the 2# transformer fault reset intermediate relay KA19.2, and out from the "13" terminal. After short-circuiting, connect to DC24V-;

[0174] Introduce DC24V+ to the "9" terminal of the normally open contact of the intermediate relay KA19.2 and out from the "5" terminal, and lead to the "X2" terminal of the 2# transformer fault indicator HL37. Then, connect to DC24V- through the "X1" terminal of the 2# transformer fault indicator HL37;

[0175] Introduce DC24V+ to the "2" terminal of the opening button SB40, then through the "1" terminal, and connect to the "4" terminal of the closing button SB39 and the "12" terminal of the self-locking KA20.1 respectively at the lower side. Then, through the "3" terminal of the closing button SB39 and the "8" terminal of the self-locking KA20.1, short-circuit and lead to the "14" terminal of the coil of the 2# rectifier cabinet fault reset intermediate relay KA20.1 and the coil of the 2# rectifier cabinet fault reset intermediate relay KA20.2 respectively, and out from the "13" terminal. After short-circuiting, connect to DC24V-;

[0176] Introduce DC24V+ to the "9" terminal of the normally open contact of the intermediate relay KA20.2 and out from the "5" terminal, and lead to the "X2" terminal of the 2# rectifier cabinet fault indicator HL39. Then, connect to DC24V- through the "X1" terminal of the 2# rectifier cabinet fault indicator HL39;

[0177] Further, the electrical circuit in the DC voltage conversion cabinet uses a DC 24V power supply. DC24V+ is introduced into the normally closed nodes in series of intermediate relay KA5.1, intermediate relay KA9.1, intermediate relay KA17.1, intermediate relay KA18.1, intermediate relay KA19.1, intermediate relay KA20.1, intermediate relay KA26.1, intermediate relay KA29.1, intermediate relay KA32.1, intermediate relay KA35.1, intermediate relay KA38.1, intermediate relay KA25.1 and intermediate relay KX24.1, and then connected to the "2" terminal of the trip button SB46. Then, through the "1" terminal, it is respectively connected to the "4" terminal of the closing button SB45 and the "12" terminal of the self-locking KA23.1 at the lower side. Then, after being short-circuited through the "3" terminal of the closing button SB45 and the "8" terminal of KA23.1, it is led to the "14" terminal of the intermediate relay coils KA23.1, KA23.2 and KA23.3. Then, after short-circuiting the "13" terminals of the intermediate relay coils KA23.1, KA23.2 and KA23.3, it is connected to DC24V-, realizing the conversion of 750V bridge parallel connection;

[0178] DC24V+ is introduced into the normally closed nodes in series of intermediate relay KA5.1, intermediate relay KA9.1, intermediate relay KA17.1, intermediate relay KA18.1, intermediate relay KA19.1, intermediate relay KA20.1, intermediate relay KA26.1, intermediate relay KA29.1, intermediate relay KA32.1, intermediate relay KA35.1, intermediate relay KA38.1, intermediate relay KA25.1 and intermediate relay KX23.1, and then connected to the "2" terminal of the trip button SB45. Then, through the "1" terminal, it is respectively connected to the "4" terminal of the closing button SB46 and the "11" terminal of the self-locking KA24.1 at the lower side. Then, after being short-circuited through the "3" terminal of the closing button SB46 and the "7" terminal of the self-locking KA24.1, it is led to the "14" terminal of the intermediate relay coils KA24.1, KA24.2 and KA24.3. Then, after short-circuiting the "13" terminals of the intermediate relay coils KA24.1, KA24.2 and KA24.3, it is connected to DC24V-, realizing the conversion of 1500V bridge series connection;

[0179] Introduce DC24V+ to the "9" terminal of the normally open node of intermediate relay KA23.2, and connect it to the "12" terminal of the normally open node of intermediate relay KX24.1. Then connect through the "5" terminal of the normally open node of intermediate relay KA23.2 and the "8" terminal of the normally open node of intermediate relay KX24.1. After short-circuiting, lead it to the "X2" terminal of indicator light HL45, and then connect to DC24V- through the "X1" terminal of indicator light HL45;

[0180] Introduce DC24V+ into the "10" terminal of the normally open node of intermediate relay KA23.2 and out from the "6" terminal, connect to the "11" terminal of the normally closed node of intermediate relay KX24.2 (in) and out from the "3" terminal, then lead it to the "X2" terminal of indicator light HL46, and then connect to DC24V- through the "X1" terminal of indicator light HL46. The indicator light will be on during bridge parallel connection;

[0181] Introduce DC24V+ into the "9" terminal of the normally open node of intermediate relay KA24.2 and out from the "5" terminal, connect to the "9" terminal of the normally closed node of intermediate relay KX23.3 (in) and out from the "1" terminal, then lead it to the "X2" terminal of indicator light HL47, and then connect to DC24V- through the "X1" terminal of indicator light HL47 to make the bridge series indicator light on;

[0182] Introduce DC24V+ into the "11" terminal of the normally open node of intermediate relay KA23.2 and out from the "7" terminal, connect to the "12" terminal of the normally closed node of intermediate relay KX24.2 (in) and out from the "4" terminal, then lead it to the "X2" terminal of indicator light HL48, and then connect to DC24V- through the "X1" terminal of indicator light HL48 to make the bridge parallel indicator light on;

[0183] Introduce DC24V+ to the "12" terminal of the normally open node of intermediate relay KA23.2, short-circuit it with the "10" terminal of the normally open node of intermediate relay KX24.2, then connect through the "8" terminal of the normally open node of intermediate relay KA23.2 and the "6" terminal of the normally open node of intermediate relay KX24.2, lead it to the "X2" terminal of indicator light HL49, and then connect to DC24V- through the "X1" terminal of indicator light HL49 to make the bridge series indicator light on;

[0184] Introduce DC24V+ into the "2" terminal of the opening button SB51, then through the "1" terminal, and connect to the "3" terminal of the closing button SB50 and the "11" terminal of the self-locking KA25.2 respectively at the lower side. Then, after short-circuiting through the "4" terminal of the closing button SB50 and the "7" terminal of the self-locking KA25.2, lead it to the "X2" terminal of the intermediate relay coil KA25.1, the intermediate relay coil KA25.2, and the intermediate relay coil KA25.3. Then, after short-circuiting the "X1" terminals of the intermediate relay coil KA25.1, the intermediate relay coil KA25.2, and the intermediate relay coil KA25.3, connect it to DC24V- to achieve fault reset;

[0185] Introduce DC24V+ into the "12" terminal of the normally open contact of the intermediate relay KA25.1 and lead it out from the "8" terminal, then lead it to the "X2" terminal of the fault indicator HL50, and then connect it to DC24V- through the "X1" terminal of the fault indicator HL50. When a fault occurs, the indicator light will be on;

[0186] Further, in the electrical circuit of the DC incoming switchgear cabinet, DC24V+ is introduced into the "2" terminal of the opening button SB53, and then through the "1" terminal, the lower side is respectively connected to the "4" terminal of the closing button SB52 and the "9" terminal of the normally open node of the self-locking KA26.2. Then, through the "3" terminal of the closing button SB52, it is connected in series with the normally closed nodes of the intermediate relay KA32.1, the intermediate relay KA35.1, and the intermediate relay KA38.1. The intermediate relay KA32.1, the intermediate relay KA35.1, and the intermediate relay KA38.1 all have their "10" terminals entering and "2" terminals exiting. It is connected to the "9" terminal of the normally open node of the intermediate relay KA26.2 entering and the "5" terminal exiting. After short-circuiting, it is connected to the "9" terminal of the normally open node of the intermediate relay KA23.1 and the "9" terminal of the normally open node of the intermediate relay KA24.1. Then, after short-circuiting through the "5" terminal of the normally open node of the intermediate relay KA23.1 and the "5" terminal number of the normally open node of the intermediate relay KA24.1, it is led to the "9" terminal of the normally open node of the intermediate relay KA42.1 entering and the "9" terminal of the normally open node of the intermediate relay KA43.1 entering. Then, through the "5" terminal of the normally open node of the intermediate relay KA42.1 exiting and the "5" terminal of the normally open node of the intermediate relay KA43.1 exiting, it is led to the normally open and normally closed nodes of the intermediate relay KA28, and then connected to the normally closed node of the locking intermediate relay KA22.1 with "12" entering and "4" exiting, connected to the normally open node of the intermediate relay KA21.2 with "9" entering and "5" exiting, connected to the normally closed node of the intermediate relay KA25.2 with "9" entering and "1" exiting, connected to the normally closed node of the intermediate relay KA44.1 with "11" entering and "3" exiting, connected to the normally closed point of the intermediate relay KA27.2 entering from the "9" terminal and exiting from the "1" terminal. Finally, it is respectively connected to the "14" terminal of the intermediate relay KA26.1, the intermediate relay coil KA26.2, and the intermediate relay coil KA26.3 entering, and "13" terminal exiting. After short-circuiting, it is connected to DC24V-, realizing the closing of the incoming switchgear cabinet;

[0187] DC24V+ is introduced into the "10" terminal of the normally open point of the intermediate relay KA26.2 entering and "6" terminal exiting, and led to the "X2" terminal of the closing indicator light HL52. Then, through the "X1" terminal of the closing indicator light HL52, it is connected to DC24V-, realizing that the indicator light is on during closing;

[0188] DC24V+ is introduced into the "10" terminal of the normally closed point of the intermediate relay KA26.2 entering and "2" terminal exiting, and led to the "X2" terminal of the opening indicator light HL53. Then, through the "X1" terminal of the opening indicator light HL53, it is connected to DC24V-, realizing that the indicator light is on during opening;

[0189] Introduce DC24V+ to the "2" terminal of the opening button SB55, then through the "1" terminal, and connect to the "4" terminal of the closing button SB54 and the "11" terminal of the self-locking KA27.1 respectively at the lower side. Then, after short-circuiting through the "3" terminal of the closing button SB54 and the "7" terminal of the self-locking KA27.1, lead it to the "X2" terminal of the intermediate relay coil KA27.1 and the intermediate relay coil KA27.2, and then connect to DC24V- through the "X1" terminal of the coils of KA27.1 and KA27.2 to achieve simulated fault reset;

[0190] Introduce DC24V+ into the "12" terminal of the normally open point of the intermediate relay KA27.1 and out from the "8" terminal, and lead it to the "X2" terminal of the fault indicator HL54, and then connect to DC24V- through the "X1" terminal of the fault indicator HL54;

[0191] Introduce DC24V+ to the "2" terminal of the opening button SB57, then through the "1" terminal, and connect to the "4" terminal of the closing button SB56 and the "10" terminal of the self-locking KA28 respectively at the lower side. Then, after short-circuiting through the "3" terminal of the closing button SB56 and the "6" terminal of the self-locking KA28, lead it to the "14" terminal of the intermediate relay coil KA28, and then connect to DC24V- through the "13" terminal of the intermediate relay coil KA28 to achieve the closing instruction for the working position and test position;

[0192] Introduce DC24V+ into the "11" terminal of the normally open point of the intermediate relay KA28 and out from the "7" terminal, and lead it to the "X2" terminal of the working position indicator HL56, and then connect to DC24V- through the "X1" terminal of the working position indicator HL54;

[0193] Introduce DC24V+ into the "11" terminal of the normally closed point of the intermediate relay KA28 and out from the "3" terminal, and lead it to the "X2" terminal of the test indicator HL57, and then connect to DC24V- through the "X1" terminal of the test indicator HL57;

[0194] Further, the electrical circuit of the DC feeder cabinet introduces DC24V+ to the "2" terminal of the opening button SB65, then through the "1" terminal, and is respectively connected to the "4" terminal of the closing button SB64 and the "12" terminal of the self-locking KA32.1 at the lower side. Then, it is connected in series with the normally closed node of the intermediate relay KA35.1 and the intermediate relay KA38.1 through the "3" terminal of the closing button SB64. After being short-circuited with the "8" terminal of the intermediate relay KA32.1 through the "4" terminal of the normally closed node of the intermediate relay KA38.1, it is connected to the "9" in and "5" out of the normally open nodes of the intermediate relay KA45.1 and the intermediate relay KA48.1 at the lower side. Then, after short-circuiting the "5" terminal of the intermediate relay KA45.1 and the "5" terminal of the intermediate relay KA48.1, it is led to the "9" node of the intermediate relay KA34. Then, after short-circuiting the normally open "5" terminal and the normally closed node "1", it is connected to the "12" terminal of the normally open node of the intermediate relay KA22.2, and exits from the "2" terminal, and is connected in series with the "11" terminal of the normally open node of the intermediate relay KA21.2 and exits from the "7" terminal; it is connected to the "9" terminal of the intermediate relay KA25.3 and exits from the "1" terminal; it is connected to the "10" terminal of the normally open node of the intermediate relay KA23.3 and exits from the "6" terminal; it is connected to the "9" terminal of the normally closed node of the intermediate relay KA44.2 and exits from the "1" terminal; it is connected to the "11" terminal of the normally open node of the intermediate relay KA42.1 and exits from the "7" terminal; it is connected to the "9" terminal of the normally closed node of the intermediate relay KA51.1 and exits from the "1" terminal; it is connected to the "9" terminal of the normally closed node of the intermediate relay KA52.1 and exits from the "1" terminal; it is connected to the "9" terminal of the normally closed node of the intermediate relay KA53.1 and exits from the "1" terminal; it is connected to the "10" terminal of the normally closed node of the intermediate relay KA33.1 and exits from the "2" terminal; it is connected to the "9" terminal of the normally closed node of the intermediate relay KA47.1 and exits from the "1" terminal, and is connected to the "9" terminal of the normally closed node of the intermediate relay KA50.1 and exits from the "1" terminal. Finally, it is respectively connected to the "14" terminal of the intermediate relay coils KA32.1, KA32.2, KA32.3, and KA32.4 of the intermediate relay and exits from the "13" terminal, and after being short-circuited, it is connected to DC24V-, forming a closing and opening circuit;

[0195] Introduce DC24V+ to the "10" terminal of the normally open point of the intermediate relay KA32.2 and exit from the "6" terminal, lead it to the "X2" terminal of the closing indicator light HL64, and then connect it to DC24V- through the "X1" terminal of the closing indicator light HL64;

[0196] Introduce DC24V+ into the normally closed contact of intermediate relay KA32.2 at terminal "10", output from terminal "2", lead it to terminal "X2" of the opening indicator HL65, and then connect it to DC24V- through terminal "X1" of the opening indicator HL65;

[0197] Introduce DC24V+ into terminal "2" of the opening button SB67, then through terminal "1", connect to terminal "4" of the closing button SB66 and terminal "11" of the self-locking KA33.1 respectively at the lower side. Then, after short-circuiting through terminal "3" of the closing button SB66 and terminal "7" of the self-locking KA33.1, lead it to terminal "14" of the intermediate relay coil KA33.1 and the intermediate relay coil KA33.2, and then connect to DC24V- through terminal "13" of the intermediate relay coil KA33.1 and the intermediate relay coil KA33.2 to achieve fault reset;

[0198] Introduce DC24V+ into terminal "12" of the normally closed contact of intermediate relay KA33.1, output from terminal "8", lead it to terminal "X2" of the test indicator HL66, and then connect to DC24V- through terminal "X1" of the test indicator HL66 to achieve fault indication;

[0199] Introduce DC24V+ into terminal "2" of the opening button SB69, then through terminal "1", connect to terminal "4" of the closing button SB68 and terminal "10" of the self-locking KA34 respectively at the lower side. Then, after short-circuiting through terminal "3" of the closing button SB68 and terminal "6" of the self-locking KA34, lead it to terminal "14" of the intermediate relay coil KA34, and then connect to DC24V- through terminal "13" of the intermediate relay coil KA4 to achieve indication of the working position and test position;

[0200] Introduce DC24V+ into terminal "11" of the normally open contact of intermediate relay KA34, output from terminal "7", lead it to terminal "X2" of the working indicator HL68, and then connect to DC24V- through terminal "X1" of the working indicator HL68 to achieve indication of the working position;

[0201] Introduce DC24V+ into terminal "11" of the normally closed contact of intermediate relay KA34, output from terminal "3", lead it to terminal "X2" of the test indicator HL69, and then connect to DC24V- through terminal "X1" of the test indicator HL69 to achieve indication of the test position;

[0202] Furthermore, the isolating switch electrical circuit of the DC power supply system introduces DC24V+ to terminal "2" of the opening button SB89, then through terminal "1", and is respectively connected to terminal "4" of the closing button SB88 and terminal "11" of the self-locking KA45.1 at the lower side. Then, through terminal "3" of the closing button SB88, it is connected in series with the normally closed nodes of the intermediate relay K32.3, intermediate relay KA35.3, intermediate relay KA44.3, intermediate relay KA47.1, and intermediate relay KA48.1. It is connected to the normally closed node of the intermediate relay KA32.3, with terminal "9" as the input and terminal "1" as the output; connected to the normally closed node of the intermediate relay KA35.3, with terminal "9" as the input and terminal "1" as the output; connected to the normally closed node of the intermediate relay KA44.3, with terminal "10" as the input and terminal "2" as the output; connected to the normally closed node of the intermediate relay KA47.1, with terminal "11" as the input and terminal "3" as the output; connected to the normally closed node of the intermediate relay KA48.1, with terminal "11" as the input and terminal "3" as the output. After that, it is led to the short circuit of terminal "10" of the normally open node of KA42.2 and terminal "9" of KA43.2. At the lower side, it is connected to terminal "6" of the intermediate relay KA42.2, terminal "5" of KA43.2, and the short circuit of the normally open node "7" of KA45.1, and connected to the normally closed node of KA46, with terminal "9" as the input and terminal "1" as the output. Finally, it is respectively connected to terminal "14" of the intermediate relay coils KA45.1, intermediate relay coils KA45.2, and intermediate relay coils KA45.3, with terminal "13" as the output. After short circuiting, it is connected to DC24V-, realizing the closing control of the isolating switch;

[0203] Introduce DC24V+ to terminal "12" of the normally open point of the intermediate relay KA45.1, with terminal "8" as the output, and lead it to terminal "X2" of the closing indicator light HL88. Then, through terminal "X1" of the closing indicator light HL88, it is connected to DC24V-, realizing the closing indication;

[0204] Introduce DC24V+ to the "2" terminal of the opening button SB88, then through the "1" terminal, and connect to the "4" terminal of the closing button SB89 and the "10" terminal of the self-locking KA46 respectively at the lower side. Then, connect to the "10" terminal of the normally closed node of the intermediate relay KA32.3 through the "3" terminal of the closing button SB89, enter from the "10" terminal and exit from the "2" terminal, connect to the "10" terminal of the normally closed node of the intermediate relay KA35.3, enter from the "10" terminal and exit from the "2" terminal, connect to the "12" terminal of the normally closed node of the intermediate relay KA47.1, enter from the "12" terminal and exit from the "4" terminal. Then, after short-circuiting with the "6" terminal of the normally open node of the intermediate relay KA46, connect to the "9" terminal of the normally closed node of the intermediate relay KA45.2, enter from the "9" terminal and exit from the "1" terminal, and finally lead to the "14" terminal of the intermediate relay coil KA46. Then, connect to DC24V- through the "13" terminal of the intermediate relay coil KA46 to achieve opening control;

[0205] Introduce DC24V+ to the "11" terminal of the normally open point of the intermediate relay KA46, enter from the "11" terminal and exit from the "7" terminal, lead to the "X2" terminal of the opening indicator light HL89, and then connect to DC24V- through the "X1" terminal of the opening indicator light HL89 to achieve opening indication.

[0206] Introduce DC24V+ to the "2" terminal of the opening button SB91, then through the "1" terminal, and connect to the "4" terminal of the closing button SB90 and the "9" terminal of the self-locking KA47.2 respectively at the lower side. Then, connect to the "5" terminal of the normally closed node of the intermediate relay KA47.2 through the "3" terminal of the closing button SB90, short-circuit after that, and finally lead to the "14" terminal of the intermediate relay coil KA47.1 and the intermediate relay coil KA47.2. Then, connect to DC24V- through the "13" terminal of the intermediate relay coil KA47.1 and the intermediate relay coil KA47.2 to achieve fault reset control;

[0207] Introduce DC24V+ to the "10" terminal of the normally open point of the intermediate relay KA47.2, enter from the "10" terminal and exit from the "6" terminal, lead to the "X2" terminal of the fault indicator light HL90, and then connect to DC24V- through the "X1" terminal of the fault indicator light HL90 to achieve fault indication.

[0208] Further, the electrical circuit in the negative electrode cabinet uses a DC 24V power supply. DC24V+ is introduced into terminal "2" of the shunt trip button SB42, and then led to terminal "4" of the closing button SB41 and terminal "11" of the self-locking point KA21.1 of the intermediate relay through terminal "1" of SB42. Then, it is connected to the normally closed node "11" of the intermediate relay KA22.1 through the lower side of terminal "3" of SB41, enters from terminal "11" and exits from terminal "3", and is connected to the normally closed node "11" of the intermediate relay KA5.1, enters from terminal "11" and exits from terminal "3", and is connected to the normally closed node "11" of the intermediate relay KA9.1, enters from terminal "11" and exits from terminal "3", and is connected to the normally closed node "10" of the intermediate relay KA17.1, enters from terminal "10" and exits from terminal "2", and is connected to the normally closed node "10" of the intermediate relay KA18.1, enters from terminal "10" and exits from terminal "2", and is connected to the normally closed node "10" of the intermediate relay KA19.1, enters from terminal "10" and exits from terminal "2", and is connected to the normally closed node "10" of the intermediate relay KA20.1, enters from terminal "10" and exits from terminal "2", and is connected to the normally closed node "11" of the intermediate relay KA25.1, enters from terminal "11" and exits from terminal "3", and is connected to the normally closed node "11" of the intermediate relay KA26.1, enters from terminal "11" and exits from terminal "3", and is connected to the normally closed node "11" of the intermediate relay KA29.1, enters from terminal "11" and exits from terminal "3", and after being short-circuited with terminal "7" of the normally open node of the self-locking point KA21.1, it is respectively connected to the closing intermediate relay coil KA21.1, the closing intermediate relay coil KA21.2, and the closing intermediate relay coil KA21.3, enters from terminal "14" and exits from terminal "13", and finally connected to DC24V-;

[0209] DC24V+ is introduced into terminal "12" of the normally open point of the closing and shunt trip intermediate relay KA21.1, exits from terminal "8", and is led to terminal "X1" of the closing indicator light HL41, exits from terminal "X0", and then connected to DC24V-;

[0210] DC24V+ is introduced into terminal "12" of the normally closed point of the closing and shunt trip intermediate relay KA21.1, exits from terminal "4", and is led to terminal "X2" of the shunt trip indicator light HL42, enters from terminal "X2", exits from terminal "X0", and then connected to DC24V-;

[0211] Introduce DC24V+ to terminal "2" of the opening button SB44, then through terminal "1", and connect to terminal "4" of the closing button SB43 and terminal "10" of the fault reset self-locking KA22.2 at the lower side respectively. Then, through terminal "3" of the closing button SB43 and terminal "6" of the self-locking KA22.2, after short-circuiting, lead to terminal "14" of the fault reset intermediate relay coil KA22.1, the fault reset intermediate relay coil KA22.2, and the fault reset intermediate relay coil KA22.3 respectively, and out from terminal "13". After short-circuiting, connect to DC24V-.

[0212] Introduce DC24V+ to terminal "11" of the normally open contact of the closing and opening intermediate relay KA22.2 and out from terminal "7", then lead to terminal "X2" of the fault indicator HL43, out from terminal "X1", and then connect to DC24V-.

[0213] Furthermore, the electrical circuit in the energy consumption braking cabinet uses a DC24V power supply. Introduce DC24V+ to terminal "2" of the opening button SB77, then through terminal "1" of SB77 to terminal "4" of the closing button SB76 and terminal "10" of the self-locking point of the intermediate relay KA38.2. After short-circuiting through terminal "3" of SB76 and terminal "6" of the self-locking point KA38.2, connect to the normally open nodes of the intermediate relay KA32.2 and the intermediate relay KA35.2 at the lower side respectively, enter from terminal "11", then out from terminal "7" of the normally open nodes of the intermediate relay KA32.2 and the intermediate relay KA35.2, and then lead to terminal "9" of the normally closed node of the intermediate relay KA40. After short-circuiting through the normally open node "5" and the normally closed node "1" of KA40, connect to terminal "3" of the normally closed node of the intermediate relay KA53.1 and out from terminal "11", connect to terminal "3" of the normally closed node of the intermediate relay KA52.1 and out from terminal "11", connect to terminal "3" of the normally closed node of the intermediate relay KA51.1 and out from terminal "11", connect to terminal "9" of the normally closed node of the intermediate relay KA41 and out from terminal "1", connect to terminal "9" of the normally closed node of the intermediate relay KA39 and out from terminal "1", connect to terminal "9" of the normally closed node of the intermediate relay KA33.2 and out from terminal "1", connect to terminal "9" of the normally closed node of the intermediate relay KA36.2 and out from terminal "1", and then lead to terminal "14" of the closing and opening intermediate relay coil KA38.1 and the closing and opening intermediate relay coil KA38.2, and out from terminal "13". After short-circuiting, connect to DC24V-.

[0214] Introduce DC24V+ into the normally open contact of the intermediate relay KA38.2 at terminal "11" and output at terminal "7", then lead it to terminal "X1" of the closing indicator light HL76.1 and the closing indicator light HL76.2, and output at terminal "X0", and then connect it to DC24V-.

[0215] Introduce DC24V+ into the normally closed contact of the intermediate relay KA38.2 at terminal "11" and output at terminal "3", then lead it to terminal "X2" of the opening indicator light HL77, output at terminal "X0", and then connect it to DC24V-.

[0216] Introduce DC24V+ into terminal "2" of the opening button SB79, then through terminal "1", and connect to terminal "4" of the closing button SB78 and terminal "10" of the fault reset self-locking KA39 respectively at the lower side. Then, through terminal "3" of the closing button SB78 and terminal "6" of the self-locking KA39, after short-circuiting, lead them to terminal "14" of the fault reset intermediate relay coil KA39 and output at terminal "13", and after short-circuiting, connect to DC24V-.

[0217] Introduce DC24V+ into the normally open contact of the intermediate relay KA39 at terminal "11" and output at terminal "7", then lead it to terminal "X2" of the fault indicator light HL78, output at terminal "X1", and then connect it to DC24V-.

[0218] Introduce DC24V+ into terminal "2" of the opening button SB81, then through terminal "1", and connect to terminal "4" of the closing button SB80 and terminal "10" of the self-locking KA40 respectively at the lower side. Then, through terminal "3" of the closing button SB80 and terminal "6" of the self-locking KA40 after short-circuiting, lead it to terminal "14" of the working position test position intermediate relay coil KA40 and output at terminal "13", and after short-circuiting, connect to DC24V-.

[0219] Introduce DC24V+ into the normally open contact of the intermediate relay KA40 at terminal "11" and output at terminal "7", then lead it to terminal "X1" of the working position indicator light HL80, output at terminal "X0", and then connect it to DC24V-.

[0220] Introduce DC24V+ into the normally closed contact of the intermediate relay KA40 at terminal "11" and output at terminal "3", then lead it to terminal "X2" of the test position indicator light HL81, output at terminal "X0", and then connect it to DC24V-.

[0221] Further, in the visible power-on electrical circuit of the busbar and test line, if the circuit in the electrical circuit uses a DC 5V power supply, introduce DC5V+ into the normally open node "10" terminal of the intermediate relay KA21.3 and output from the "6" terminal, connect to the negative strip of the L1 test line at "2" and output at "1", and finally lead to DC5V-.

[0222] Introduce DC5V+ into the normally open node "12" terminal of the intermediate relay KA23.3 and the normally open node "11" terminal of the intermediate relay KA24.3 respectively. After short-circuiting the "8" terminal of KA23.3 and the "7" terminal of KA24.3, connect to the negative strip of the L2 DC busbar at "2" and output at "1", and finally lead to DC5V-.

[0223] Introduce DC5V+ into the normally open node "10" terminal of the intermediate relay KA26.3 and the normally open node "10" terminal of the intermediate relay KA29.3 respectively. After short-circuiting the "6" terminal of KA26.3 and the "6" terminal of KA29.3, connect to the positive strip of the L3 DC busbar at "2" and output at "1", and finally lead to DC5V-.

[0224] Introduce DC5V+ into the normally open node "11" terminal of the intermediate relay KA32.4 and the normally open node "11" terminal of the intermediate relay KA35.4 respectively. After short-circuiting the "7" terminal of KA32.4 and the "7" terminal of KA35.4, connect to the normally open node "9" terminal of the intermediate relay KA45.3 and output from the "5" terminal. Then connect to the three-rail power supply lamp strip of the L4 test line at "2" and output at "1", and finally lead to DC5V-.

[0225] Introduce DC5V+ into the normally open node "12" terminal of the intermediate relay KA32.4 and the normally open node "12" terminal of the intermediate relay KA35.4 respectively. After short-circuiting the "8" terminal of KA32.4 and the "8" terminal of KA35.4, connect to the normally open node "9" terminal of the intermediate relay KA48.3 and output from the "5" terminal. Then connect to the catenary power supply lamp strip of the L5 test line at "2" and output at "1", and finally lead to DC5V-.

[0226] According to the actual operation scenario of the DC power supply system, use the implementation logic control of conventional relays to simulate the electrical interlock control among more than 40 kinds of electrical equipment on-site, and achieve:

[0227] 1. The structure and composition of the DC power supply system can be restored 1:1 on the training device;

[0228] 2. It can simulate more than 40 kinds of complex electrical interlock control relationships of the DC power supply system;

[0229] 3. It can simulate dispatching commands and conduct power cut and power-on switching operation drills;

[0230] 4. It can artificially simulate equipment failures and guide employees to conduct fault analysis, judgment, and handling.

[0231] With this device, on the training device, it is possible to simulate the actual operation drill of power supply and power cut in the power supply system. By artificially designing faults, it can assess employees' abilities regarding the working principle, logical relationship, fault analysis, judgment, and handling of the power supply system, improve the efficiency of training work, realize the freedom of employees' daily learning and training time, without being restricted by production power supply. It can organize and carry out employees' skills training at any time according to needs, shorten the training time of on-the-job personnel, and greatly relieve the pressure of the shortage of substation and distribution network duty operators.

Claims

1. A simulation training device for a DC power supply system of an urban rail test line, characterized in that: It includes a box body, the left part of the box body is a simulated DC power supply system, and the right part is a clock and button station. The DC power supply system includes a 10KV high-voltage cabinet, a transformer rectifier cabinet, a DC switch cabinet and a test line, wherein: the 10KV high-voltage cabinet includes a high-voltage incoming line switch cabinet and a high-voltage transformer switch cabinet, the transformer rectifier cabinet includes 2 transformers and 2 rectifier cabinets, the DC switch cabinet includes a 750 / 1500V voltage conversion cabinet, an incoming line cabinet, a feeder cabinet, a negative pole cabinet, an energy consumption brake cabinet and an isolating switch, and the test line includes a contact network, a contact rail and a return rail; The clock and button station includes a timing display device, a 10KV high-voltage cabinet button station, a transformer rectifier cabinet button station and a DC switch cabinet button station; The timing display device is used for training and assessment timing display and countdown voice warning; The push button station is used to simulate the power outage operation between 10KV high-voltage cabinets, transformer rectifier cabinets and DC switch cabinets, as well as electrical interlocking relationship control and fault handling; The 10KV high voltage electricity reaches the 10KV busbar by closing the high voltage incoming line switch cabinet, closing the two high voltage transformer switch cabinets, sending the 10KV high voltage electricity to the two transformers and reducing the 10KV high voltage electricity to 610V and introducing it into the two rectifier cabinets, and then the two three-phase bridge rectifier circuit groups are connected in parallel to form a 24-pulse rectifier output of 750V, which is output as a 1500V / 750V DC voltage through the series and parallel output of the 750 / 1500V voltage conversion cabinet. The positive pole of the DC 1500V / 750V voltage is supplied to the vehicle for traction and braking through the incoming line cabinet, DC busbar, feeder cabinet and energy consumption brake cabinet, and the test line contact network / contact rail. The negative pole of the DC 1500V / 750V voltage is supplied through the negative cabinet and the test line running rail, and the vehicle and the test line contact network / contact rail form a power supply circuit; The above devices are connected through a circuit, which includes a control power supply circuit, an electrical circuit of a high-voltage incoming line switch cabinet, an electrical circuit of a high-voltage transformer switch cabinet, an electrical circuit of a transformer rectifier cabinet, an electrical circuit of a DC voltage conversion cabinet, an electrical circuit of a DC incoming line cabinet, an electrical circuit of a DC feeder cabinet, an electrical circuit of a DC power supply system disconnector, an electrical circuit of a negative pole cabinet, an electrical circuit of an energy-consuming brake cabinet, and an electrical circuit of a busbar and a test line power transmission visible energy; The control power supply circuit realizes the output and distribution of power supply through the control loop; The electrical circuit of the high-voltage transformer switch cabinet simulates the closing and opening status, closing and opening indication, working position test position status, grounding knife closing and opening, and fault simulation of the 10KV high-voltage switch cabinet through the control loop; The transformer rectifier cabinet electrical circuit simulates the transformer rectifier cabinet electrical interlocking control through the control loop; The electrical circuit of the DC voltage conversion cabinet outputs DC 750V / 1500V voltage conversion control, signal indication and electrical interlocking control through the control loop by simulating bridge series and bridge parallel; The electrical circuit of the DC incoming line cabinet simulates the closing and opening status, closing and opening indication, working position and test position status, and fault simulation of the DC incoming line switch cabinet through the control loop; The electrical circuit of the DC feeder cabinet simulates the closing and opening states, closing and opening indications, working position and test position states, and fault simulation of the DC feeder switch cabinet through the control loop; The DC power supply system disconnect switch electrical circuit simulates the disconnect switch closing and opening states, closing and opening indications, working position and test position states, and fault simulation through the control loop; The electrical circuit of the high-voltage incoming line switch cabinet simulates the closing and opening status, closing and opening indication, working position test position status, grounding knife closing and opening, and fault simulation of the 10KV high-voltage incoming line switch cabinet through the control loop; The negative pole cabinet electrical circuit simulates the closing and opening status, closing and opening indication, fault reset and fault indication of the negative pole switch cabinet through the control loop; The electrical circuit of the energy-consuming brake cabinet simulates the closing and opening state, closing and opening indication, working position and test position state and working position and test position indication of the 10KV high-voltage incoming line switch cabinet through the control loop; The bus and test line power transmission visible energy electrical circuit simulates the test line negative pole light strip, DC bus negative pole light strip, DC bus positive pole light strip, test line three-track power transmission light strip and test line contact network power transmission light strip through the control loop.

2. According to claim 1, a simulation training device for a DC power supply system of an urban rail test line is characterized in that: The single-phase 220V power supply in the control power supply circuit is connected to the upper side of the 2P circuit breaker QF1, and the lower side of the 2P circuit breaker QF1 is respectively connected to 2P circuit breakers QF2, 2P circuit breakers QF3 and 2P circuit breakers QR, and the power supply terminals "L" and "N" are connected to the switching power supply U1, switching power supply U2 and the "L" and "N" of sockets 1, 2 and 3 after passing through 2P circuit breakers QF2, 2P circuit breakers QF3 and 2P circuit breakers QR; the 24V switching power supply U1 is connected to the lower side of the 2P circuit breaker QF2, and after the switching power supply U1 converts the AC 220V into DC 24V, the lower side is connected to 2P circuit breakers QF4, 2P The lower side of the circuit breaker QF4 is connected to the voice device 1 and the voice device 2, the "V+" of the switching power supply U1 is connected to the positive poles of the voice device 1 and the voice device 2, and the "V-" of the switching power supply U1 is connected to the negative poles of the voice device 1 and the voice device 2, and outputs DC 24V at the same time; the lower side of the 2P circuit breaker QF3 is connected to the 5V switching power supply U2, and the AC 220V is converted into a DC 5V output through the switching power supply U2; the lower side of the 2P circuit breaker QR is connected to socket 1, socket 2, and socket 3, the "L" output of socket 1 is connected to the clock display alarm device "L", and the "N" output of socket 1 is connected to the clock display alarm device "N".

3. According to claim 1, a simulation training device for a DC power supply system of an urban rail test line is characterized in that: The circuit in the electrical circuit of the high-voltage incoming switch cabinet adopts a DC 24V power supply, and the DC24V+ is introduced into the "2" terminal of the opening button SB2, and then through the "1" terminal of the opening button SB2 to the "4" terminal of the closing button SB1 and the "9" terminal of the self-locking point KA1 of the closing and opening intermediate relay, and then through the lower side of the "3" terminal of the closing button SB1, the normally closed node "9" terminal of the intermediate relay KA5.2 is connected to the "1" terminal, and the normally closed node "9" terminal of the intermediate relay KA6.1 is connected to the "1" terminal, and the normally closed node "9" terminal of the intermediate relay KA9.2 is connected to the "1" terminal. Point "9" terminal in, "1" terminal out, connected to the normally closed node "9" terminal in, "1" terminal out of the intermediate relay KA10.1, short-circuited with the "5" terminal of the self-locking point KA1, connected to the normally closed node "9" in, "1" out of the intermediate relay KA2, connected to the normally open node "9" terminal in, "5" terminal out of the intermediate relay KA3, connected to the normally closed node "9" terminal in, "1" terminal out of the intermediate relay KA4, then connected to the closing and opening relay KA1 coil "14" terminal in, "13" terminal out, and finally connected to DC24V-; Lead the DC24V+ into the normally open terminal "10" of the intermediate relay KA1, and output it from the terminal "6", and then lead it to the terminal "X2" of the closing indicator HL1, and output it from the terminal "X1", and then connect it to the DC24V-; Lead the DC24V+ into the normally closed point "10" terminal of the intermediate relay KA1, and lead it to the "X2" terminal of the opening indicator HL2, and the "X1" terminal, and then connect it to the DC24V-; Lead the DC24V+ to the "2" terminal of the opening button SB4, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB3 and the "10" terminal of the fault reset self-locking KA2, and then through the "3" terminal of the closing button SB3 and the "6" terminal of the self-locking KA2, and then short-circuit to the "14" terminal of the fault reset intermediate relay KA2 coil and the "13" terminal, and then short-circuit to connect to the DC24V-; Lead the DC24V+ into the normally open point "11" terminal of the intermediate relay KA2, and output it from "7" terminal, and then lead it to the "X2" terminal of the fault indicator HL3, and output it from "X1" terminal, and then connect it to the DC24V-; Lead the DC24V+ to the "2" terminal of the opening button SB6, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB5 and the "10" terminal of the normally open node of the working position / test position intermediate relay self-locking KA3, and then through the "3" terminal of the closing button SB5 and the "6" terminal of the self-locking KA3, short-circuit and lead to the "14" terminal of the working position / test position intermediate relay KA3 coil, and "13" terminal out, and then short-circuit and connect to the DC24V-; Lead the DC24V+ into the normally open terminal "11" of the intermediate relay KA3, and output it from the terminal "7", and then lead it to the terminal "X2" of the working position indicator HL5, and output it from the terminal "X1", and then connect it to the DC24V-; Lead the DC24V+ into the normally closed point "11" terminal of the intermediate relay KA3, and lead it to the "X2" terminal of the test position indicator HL6, and the "X1" terminal, and then connect it to the DC24V-; Lead the DC24V+ to the "2" terminal of the opening button SB8, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB7 and the "10" terminal of the normally open node of the earth knife closing and opening intermediate relay self-locking KA4, and then through the "3" terminal of the closing button SB7 and the "6" terminal of the self-locking KA4, short-circuit and lead to the "14" terminal of the earth knife closing and opening intermediate relay KA4 coil, "13" terminal out, short-circuit and connect to the DC24V-; Lead the DC24V+ into the normally open terminal "11" of the intermediate relay KA4, and then lead it to the terminal "7", and then to the terminal "X2" and terminal "X1" of the earth switch closing indicator HL7, and then connect it to the DC24V-; Lead the DC24V+ into the normally closed point "11" terminal of the intermediate relay KA4, and lead it to the "X2" terminal of the earth switch opening indicator HL8, and the "X1" terminal, and then connect it to the DC24V-; The circuit in the electrical circuit of the high-voltage transformer switch cabinet adopts a DC 24V power supply, and the DC24V+ is introduced into the "2" terminal of the opening button SB10, and then connected to the "4" terminal of the closing button SB9 and the "9" terminal of the self-locking KA5.1 through the lower side of the "1" terminal, and then connected in series with the normally closed nodes of K26.1 and KA29.1 through the "3" terminal of SB9, and connected to the "5" terminal of the self-locking KA5.1 through the "1" terminal of the normally closed node of KA29.1, and connected to the "9" terminal of the working position test position intermediate relay KA7 on the lower side, and after the normally open node "5" of the working position test position intermediate relay KA7 and the normally closed node "1" of the working position test position intermediate relay KA7 are short-circuited, and then led to the "11" terminal of KA1 and the "11" terminal of KA13, and respectively from the "7" terminal of KA1 and KA13. Lead out, then enter through the normally closed point "11" terminal of the locking intermediate relay KA6.1, exit through the "3" terminal of the locking intermediate relay KA6.1, connect to the normally open point of the locking intermediate relay KA21.1 from the "9" terminal and exit through the "5" terminal, connect to the normally closed point of the locking intermediate relay KA22.1, locking intermediate relay KA25.1, locking intermediate relay KA27.1, locking intermediate relay KA30.1, locking intermediate relay KA44.1, locking intermediate relay KA17.1, locking intermediate relay KA18.1, locking intermediate relay KA8 from the "9" terminal and exit through the "1" terminal, finally connect to the coils of the intermediate relay KA5.1 and the intermediate relay KA5.2 from the "14" terminal and the "13" terminal, short-circuit and connect to DC24V-; Lead DC24V+ into the normally open terminal "10" of the intermediate relay KA5.1 and out of the terminal "6", and then lead it to the "X2" terminal of the closing indicator lights HL9.1, HL9.2, and HL9.3, and then short-circuit the "X1" of HL9.1, HL9.2, and HL9.3 and connect it to DC24V-; Lead the DC24V+ into the normally closed terminal "10" of the intermediate relay KA5.1 and output it from the terminal "2", and then lead it to the "X2" terminal of the opening indicator light HL10, and then connect the "X1" of HL10 to the DC24V-; Lead the DC24V+ into the "2" terminal of the opening button SB12, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB11 and the "12" terminal of the self-locking KA6.1, and then through the "3" terminal of the closing button SB11 and the "8" terminal of the self-locking KA6.1, and then short-circuit to the fault reset intermediate relay KA6.1 and the fault reset intermediate relay KA6.2 intermediate relay coil "14" terminal in, "13" terminal out, and then short-circuit to the DC24V-; Lead the DC24V+ into the normally open terminal "9" of the intermediate relay KA6.2 and output it from the terminal "6", and then lead it to the "X2" terminal of the fault indicator light HL11, and then connect it to the DC24V- through the "X1" terminal of the fault indicator light HL11; Lead the DC24V+ into the "2" terminal of the opening button SB12, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB13 and the "10" terminal of the self-locking KA7, and then through the "3" terminal of the closing button SB13 and the "6" terminal of the self-locking KA7, short-circuit and lead to the "14" terminal of the coil of the working position / test position intermediate relay KA7, and the "13" terminal out, and then short-circuit and connect to the DC24V-; Lead the DC24V+ into the "11" terminal of the normally open point of the intermediate relay KA7, and output it from the "7" terminal, and lead it to the "X2" terminal of the working position indicator light HL13, and then connect it to the DC24V- through the "X1" terminal of the working position indicator light HL13; Lead the DC24V+ into the normally closed terminal "11" of the intermediate relay KA7 and output it from the terminal "3", and then lead it to the "X2" terminal of the working position indicator light HL14, and then connect it to the DC24V- through the "X1" terminal of the working position indicator light HL14; Lead the DC24V+ to the "2" terminal of the opening button SB16, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB15 and the "10" terminal of the self-locking KA8, and then through the "3" terminal of the closing button SB15 and the "6" terminal of the self-locking KA8, and then short-circuit to the "14" terminal of the earth knife closing and opening intermediate relay KA8 coil, and then short-circuit to the DC24V-; Lead the DC24V+ into the "11" terminal of the normally open point of the intermediate relay KA8, and then lead it to the "X2" terminal of the grounding knife closing indicator light HL15, and then connect it to the DC24V- through the "X1" terminal of the grounding knife closing indicator light HL15; Lead the DC24V+ into the normally closed point "11" terminal of the intermediate relay KA8, and output it from the "3" terminal, and lead it to the "X2" terminal of the earthing knife trip indicator light HL16, and then connect it to the DC24V- through the "X1" terminal of the earthing knife trip indicator light HL16.

4. According to claim 1, a simulation training device for a DC power supply system of an urban rail test line is characterized in that: The circuit in the transformer rectifier cabinet electrical circuit adopts a DC 24V power supply, and the DC24V+ is introduced into the "2" terminal of the opening button SB34, and then through the "1" terminal, the lower side is respectively connected to the "4" terminal of the closing button SB33 and the "12" terminal of the self-locking KA17.1, and then through the "3" terminal of the closing button SB33 and the "8" terminal of the normally open node of the self-locking KA17.1, and the lower side is respectively led to the "14" terminal of the No. 1 transformer fault reset intermediate relay KA17.1 and the "14" terminal of the No. 1 transformer fault reset intermediate relay KA17.2, and respectively led out from the "13" terminal of the No. 1 transformer fault reset intermediate relay KA17.1 and the No. 1 transformer fault reset intermediate relay KA17.2; Lead the DC24V+ into the normally open terminal "9" of the intermediate relay KA17.2 and output it from the terminal "5", and lead it to the "X2" terminal of the No. 1 transformer fault indicator HL33, and then connect it to the DC24V- through the "X1" of the No. 1 transformer fault indicator HL33; Lead the DC24V+ to the "2" terminal of the opening button SB36, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB35 and the "12" terminal of the normally open node of the self-locking KA18.1, and then through the "3" terminal of the closing button SB35 and the "8" terminal of the self-locking KA18.1, short-circuit and lead to the "14" terminal of the No. 1 rectifier cabinet fault reset intermediate relay coil KA18.1 and the No. 1 rectifier cabinet fault reset intermediate relay coil KA18.2, and then short-circuit and connect to the DC24V-; Lead DC24V+ into the normally open terminal "9" of the intermediate relay KA18.2 and output it from the terminal "5", and then lead it to the "X2" terminal of the fault indicator light HL35 of the No. 1 rectifier cabinet, and then connect the "X1" of the fault indicator light HL35 of the No. 1 rectifier cabinet to DC24V-; Lead the DC24V+ to the "2" terminal of the opening button SB38, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB37 and the "12" terminal of the self-locking KA19.1, and then through the "3" terminal of the closing button SB37 and the "8" terminal of the self-locking KA19.1, and then short-circuit to the "14" terminal of the No. 2 transformer fault reset intermediate relay coil KA19.1 and the "13" terminal of the No. 2 transformer fault reset intermediate relay coil KA19.2, and then short-circuit to connect to the DC24V-; Lead the DC24V+ into the normally open terminal "9" of the intermediate relay KA19.2 and output it from the terminal "5", and then lead it to the "X2" terminal of the No. 2 transformer fault indicator HL37, and then connect it to the DC24V- through the "X1" terminal of the No. 2 transformer fault indicator HL37; Lead the DC24V+ to the "2" terminal of the opening button SB40, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB39 and the "12" terminal of the self-locking KA20.1, and then through the "3" terminal of the closing button SB39 and the "8" terminal of the self-locking KA20.1, and then short-circuit and lead to the "14" terminal of the fault reset intermediate relay coil KA20.1 of the No. 2 rectifier cabinet and the "13" terminal of the fault reset intermediate relay coil KA20.2 of the No. 2 rectifier cabinet, and then short-circuit and connect to the DC24V-; Lead the DC24V+ into the normally open terminal "9" of the intermediate relay KA20.2 and out of the terminal "5", lead it to the "X2" terminal of the fault indicator light HL39 of the No. 2 rectifier cabinet, and then connect it to the DC24V- through the "X1" terminal of the fault indicator light HL39 of the No. 2 rectifier cabinet.

5. The urban rail test line DC power supply system simulation training device according to claim 1 is characterized in that: The circuit in the electrical circuit of the DC voltage conversion cabinet adopts a DC 24V power supply. After the DC24V+ is introduced into the normally closed node of the intermediate relay KA5.1, the intermediate relay KA9.1, the intermediate relay KA17.1, the intermediate relay KA18.1, the intermediate relay KA19.1, the intermediate relay KA20.1, the intermediate relay KA26.1, the intermediate relay KA29.1, the intermediate relay KA32.1, the intermediate relay KA35.1, the intermediate relay KA38.1, the intermediate relay KA25.1 and the intermediate relay KX24.1 are connected in series, the opening button SB46 "2" is connected Terminal, and then through terminal "1", the lower side is connected to terminal "4" of closing button SB45 and terminal "12" of self-locking KA23.1, and then through terminal "3" of closing button SB45 and terminal "8" of KA23.1, it is led to terminal "14" of intermediate relay coil KA23.1, intermediate relay coil KA23.2, and intermediate relay coil KA23.3, and then the terminal "13" of intermediate relay coil KA23.1, intermediate relay coil KA23.2, and intermediate relay coil KA23.3 is short-circuited, and connected to DC24V-, realizing the conversion of 750V bridge parallel; After introducing DC24V+ into the normally closed node of the intermediate relays KA5.1, KA9.1, KA17.1, KA18.1, KA19.1, KA20.1, KA26.1, KA29.1, KA32.1, KA35.1, KA38.1, KA25.1 and KX23.1 in series, connect the opening button SB45 "2" terminal, and then through the "1" terminal, the lower side is respectively Connect the "4" terminal of the closing button SB46 and the "11" terminal of the self-locking KA24.1, and then short-circuit the "3" terminal of the closing button SB46 and the "7" terminal of the self-locking KA24.1, and then lead to the "14" terminal of the intermediate relay coil KA24.1, the intermediate relay coil KA24.2, and the intermediate relay coil KA24.3, and then short-circuit the "13" terminal of the intermediate relay coil KA24.1, the intermediate relay coil KA24.2, and the intermediate relay coil KA24.3, and connect to DC24V- to achieve the conversion of 1500V bridge string; Lead the DC24V+ to the "9" terminal of the normally open node of the intermediate relay KA23.2, and to the "12" terminal of the normally open node of the intermediate relay KX24.1, and then connect through the "5" terminal of the normally open node of the intermediate relay KA23.2 and the "8" terminal of the normally open node of the intermediate relay KX24.1, and after short-circuiting, lead to the "X2" terminal of the indicator light HL45, and then connect to the DC24V- through the "X1" terminal of the indicator light HL45; Lead DC24V+ to the normally open node "10" terminal of the intermediate relay KA23.2, and the "6" terminal, connect to the normally closed node "11" terminal of the intermediate relay KX24.2, and the "3" terminal, and then lead to the "X2" terminal of the indicator light HL46, and then connect to the DC24V- through the "X1" terminal of the indicator light HL46. When the bridge is paralleled, the indicator light will be on; Lead DC24V+ to the normally open node "9" terminal of the intermediate relay KA24.2, and the "5" terminal, connect to the normally closed node "9" terminal of the intermediate relay KX23.3, and the "1" terminal, and then lead to the "X2" terminal of the indicator light HL47, and then connect to the DC24V- through the "X1" terminal of the indicator light HL47, so that the bridge string indicator lights up; Lead DC24V+ to the normally open node "11" terminal of the intermediate relay KA23.2, and the "7" terminal, connect to the normally closed node "12" terminal of the intermediate relay KX24.2, and the "4" terminal, and then lead to the "X2" terminal of the indicator light HL48, and then connect to the DC24V- through the "X1" terminal of the indicator light HL48, so that the bridge indicator light turns on; Lead DC24V+ to the "12" terminal of the normally open node of the intermediate relay KA23.2, short-circuit it with the "10" terminal of the normally open node of the intermediate relay KX24.2, connect it through the "8" terminal of the normally open node of the intermediate relay KA23.2 and the "6" terminal of the normally open node of the intermediate relay KX24.2, lead it to the "X2" terminal of the indicator light HL49, and then connect it to the DC24V- through the "X1" terminal of the indicator light HL49, so that the bridge string indicator light is on; Lead the DC24V+ to the "2" terminal of the opening button SB51, and then through the "1" terminal, the lower side is connected to the "3" terminal of the closing button SB50 and the "11" terminal of the self-locking KA25.2, and then through the "4" terminal of the closing button SB50 and the "7" terminal of the self-locking KA25.2, and then short-circuit the "4" terminal of the closing button SB50 and the "7" terminal of the self-locking KA25.2, and then lead to the "X2" terminal of the intermediate relay coil KA25.1, the intermediate relay coil KA25.2 and the intermediate relay coil KA25.3, and then short-circuit the "X1" terminal of the intermediate relay coil KA25.1, the intermediate relay coil KA25.2 and the intermediate relay coil KA25.3, and then connect to the DC24V- to achieve fault reset; Lead DC24V+ into the normally open terminal "12" of the intermediate relay KA25.1, and output it from the terminal "8", and lead it to the "X2" terminal of the fault indicator light HL50, and then connect it to DC24V- through the "X1" terminal of the fault indicator light HL50. When a fault occurs, the indicator light will light up.

6. The urban rail test line DC power supply system simulation training device according to claim 1 is characterized in that: In the electrical circuit of the DC incoming cabinet, DC24V+ is introduced into the "2" terminal of the opening button SB53, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB52 and the "9" terminal of the normally open node of the self-locking KA26.2, and then the intermediate relay KA32.1, the intermediate relay KA35.1 and the intermediate relay KA38.1 are connected in series through the "3" terminal of the closing button SB52. The normally closed nodes of the intermediate relays KA32.1, KA35.1 and KA38.1 are connected. The "10" terminal and the "2" terminal of the intermediate relay KA38.1 are both connected, and the "9" terminal of the normally open node of the intermediate relay KA26.2 is connected, and the "5" terminal is connected. After short-circuiting, the "9" terminal of the normally open node of the intermediate relay KA23.1 and the "9" terminal of the normally open node of the intermediate relay KA24.1 are connected, and then the "5" terminal of the normally open node of the intermediate relay KA23.1 and the "5" terminal of the normally open node of the intermediate relay KA24.1 are short-circuited, and then the intermediate relay K The normally open node "9" terminal of A42.1 and the normally open node "9" terminal of intermediate relay KA43.1 are then led to the normally open node "5" terminal of intermediate relay KA42.1 and the normally open node "5" terminal of intermediate relay KA43.1, and then to the normally open and normally closed nodes of intermediate relay KA28, and then connected to the normally closed nodes "12" in and "4" out of the locking intermediate relay KA22.1, and connected to the normally open nodes "9" in and "5" out of the intermediate relay KA21.2, and connected to the normally open nodes "12" in and "4" in the intermediate relay KA22.

1. The normally closed node "9" of the intermediate relay KA25.2 is connected to the normally closed node "11" of the intermediate relay KA44.1 and the normally closed node "3" is connected to the normally closed point of the intermediate relay KA27.2 from the "9" terminal to the "1" terminal, and finally connected to the "14" terminal of the intermediate relay KA26.1, the intermediate relay coil KA26.2 and the intermediate relay coil KA26.3, and the "13" terminal is connected to the DC24V- after short-circuiting to close the incoming cabinet; Lead the DC24V+ into the "10" terminal of the normally open point of the intermediate relay KA26.2, and output it from the "6" terminal, and then lead it to the "X2" terminal of the closing indicator light HL52, and then connect it to the DC24V- through the "X1" terminal of the closing indicator light HL52, so that the indicator light will turn on when closing; Lead DC24V+ into the normally closed terminal "10" of the intermediate relay KA26.2 and output it from the terminal "2", and then lead it to the "X2" terminal of the opening indicator light HL53, and then connect it to DC24V- through the "X1" terminal of the opening indicator light HL53 to realize the opening, and the indicator light will be on; Lead the DC24V+ to the "2" terminal of the opening button SB55, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB54 and the "11" terminal of the self-locking KA27.1, and then through the "3" terminal of the closing button SB54 and the "7" terminal of the self-locking KA27.1, after short-circuiting, lead to the "X2" terminal of the intermediate relay coil KA27.1 and the intermediate relay coil KA27.2, and then through the "X1" terminal of the KA27.1 and KA27.2 coils to the DC24V- to achieve simulated fault reset; Lead the DC24V+ into the normally open terminal "12" of the intermediate relay KA27.1 and output it from the terminal "8", and then lead it to the "X2" terminal of the fault indicator light HL54, and then connect it to the DC24V- through the "X1" terminal of the fault indicator light HL54; Lead the DC24V+ to the "2" terminal of the opening button SB57, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB56 and the "10" terminal of the self-locking KA28, and then through the "3" terminal of the closing button SB56 and the "6" terminal of the self-locking KA28 After short-circuiting, lead to the "14" terminal of the intermediate relay coil KA28, and then through the "13" terminal of the intermediate relay coil KA28 to connect to the DC24V-, to realize the working position test position closing command; Lead the DC24V+ into the normally open terminal "11" of the intermediate relay KA28 and output it from the terminal "7", and then lead it to the "X2" terminal of the working position indicator light HL56, and then connect it to the DC24V- through the "X1" terminal of the working position indicator light HL54; Lead the DC24V+ into the normally closed terminal "11" of the intermediate relay KA28 and output it from the terminal "3", and then lead it to the "X2" terminal of the test indicator light HL57, and then connect it to the DC24V- through the "X1" terminal of the test indicator light HL57; The electrical circuit of the DC feeder cabinet introduces DC24V+ into the "2" terminal of the opening button SB65, and then through the "1" terminal, the lower side is respectively connected to the "4" terminal of the closing button SB64 and the "12" terminal of the self-locking KA32.1, and then the "3" terminal of the closing button SB64 is connected in series with the normally closed node of the intermediate relay KA35.1 and the intermediate relay KA38.1, and after the "4" terminal of the normally closed node of the intermediate relay KA38.1 is short-circuited with the "8" terminal of the intermediate relay KA32.1, the lower side is connected to the intermediate relay KA45.1 and the intermediate relay KA4 8.1 Normally open node "9" in "5" out, then short-circuit the "5" terminal of the intermediate relay KA45.1 and the "5" terminal of the intermediate relay KA48.1, lead to the "9" node of the intermediate relay KA34, then short-circuit the normally open "5" terminal and the normally closed node "1", connect to the normally open node "12" terminal in, "2" terminal out of the intermediate relay KA22.2, and connect in series the normally open node "11" terminal in, "7" terminal out of the intermediate relay KA21.2; connect the intermediate relay KA25.3 "9" terminal in, "1" terminal out; connect Intermediate relay KA23.3 normally open node "10" input, terminal "6" output; connect intermediate relay KA44.2 normally closed node "9" input, terminal "1" output; connect intermediate relay KA42.1 normally open node "11" input, terminal "7" output; connect intermediate relay KA51.1 normally closed node "9" input, terminal "1" output; connect intermediate relay KA52.1 normally closed node "9" input, terminal "1" output; connect intermediate relay KA53.1 normally closed node "9" input, terminal "1" output; connect Connect the normally closed node "10" terminal input and "2" terminal output of the intermediate relay KA33.1; connect the normally closed node "9" terminal input and "1" terminal output of the intermediate relay KA47.1, connect the normally closed node "9" terminal input and "1" terminal output of the intermediate relay KA50.1, and finally connect to the "14" terminal input and "13" terminal output of the intermediate relay coil KA32.1, intermediate relay coil KA32.2, intermediate relay coil KA32.3 and intermediate relay coil KA32.4 respectively, short-circuit and connect to DC24V- to form a closing and opening circuit; Lead the DC24V+ into the normally open terminal "10" of the intermediate relay KA32.2 and out of the terminal "6", and then lead it to the "X2" terminal of the closing indicator light HL64, and then connect it to the DC24V- through the "X1" terminal of the closing indicator light HL64; Lead the DC24V+ into the normally closed terminal "10" of the intermediate relay KA32.2 and output it from the terminal "2", and then lead it to the "X2" terminal of the opening indicator light HL65, and then connect it to the DC24V- through the "X1" terminal of the opening indicator light HL65; Lead the DC24V+ to the "2" terminal of the opening button SB67, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB66 and the "11" terminal of the self-locking KA33.1, and then through the "3" terminal of the closing button SB66 and the "7" terminal of the self-locking KA33.1 After short-circuiting, lead it to the "14" terminal of the intermediate relay coil KA33.1 and the intermediate relay coil KA33.2, and then connect it to the DC24V- through the "13" terminal of the intermediate relay coil KA33.1 and the intermediate relay coil KA33.2 to achieve fault reset; Lead DC24V+ into the normally closed terminal "12" of the intermediate relay KA33.1 and output it from the terminal "8", and then lead it to the "X2" terminal of the test indicator light HL66, and then connect it to DC24V- through the "X1" terminal of the test indicator light HL66 to realize fault indication; Lead the DC24V+ into the "2" terminal of the opening button SB69, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB68 and the "10" terminal of the self-locking KA34, and then through the "3" terminal of the closing button SB68 and the "6" terminal of the self-locking KA34, short-circuited, and then led to the "14" terminal of the intermediate relay coil KA34, and then through the "13" terminal of the intermediate relay coil KA4 coil to connect to the DC24V-, to achieve the working position test position indication; Lead DC24V+ into the normally open terminal "11" of the intermediate relay KA34 and out of the terminal "7", and then lead it to the "X2" terminal of the working indicator light HL68, and then connect it to DC24V- through the "X1" terminal of the working indicator light HL68 to realize the working position indication; Lead DC24V+ into the normally closed terminal "11" of the intermediate relay KA34 and out of the terminal "3", lead it to the "X2" terminal of the test indicator light HL69, and then connect it to DC24V- through the "X1" terminal of the test indicator light HL69 to realize the test position indication.

7. The urban rail test line DC power supply system simulation training device according to claim 1 is characterized in that: The DC power supply system isolating switch electrical circuit introduces DC24V+ into the "2" terminal of the opening button SB89, and then through the "1" terminal, the lower side is respectively connected to the "4" terminal of the closing button SB88 and the "11" terminal of the self-locking KA45.1, and then the "3" terminal of the closing button SB88 is connected in series with the normally closed nodes of the intermediate relay K32.3, the intermediate relay KA35.3, the intermediate relay KA44.3, the intermediate relay KA47.1, and the intermediate relay KA48.1, and the normally closed nodes of the intermediate relay KA32.3 are connected to the "9" terminal of the normally closed node and the "1" terminal; the intermediate relay KA35.3 is connected to the "9" terminal of the normally closed node and the "1" terminal; the intermediate relay KA44.3 is connected to the "10" terminal of the normally closed node and the "2" terminal; the intermediate relay KA44.3 is connected to the normally closed node. The normally closed node "11" of the electrical appliance KA47.1 is connected to the input of the terminal "11" and the output of the terminal "3" of the normally closed node; after connecting the input of the terminal "11" and the output of the terminal "3" of the intermediate relay KA48.1, it is led to the normally open node "10" of KA42.2 and short-circuited with the terminal "9" of KA43.

2. The lower side is connected to the terminal "6" of the intermediate relay KA42.2, the terminal "5" of KA43.2 and the normally open node "7" of KA45.1, and then connected to the input of the terminal "9" and the output of the terminal "1" of the normally closed node of KA46. Finally, it is connected to the input of the terminal "14" and the output of the terminal "13" of the intermediate relay coil KA45.1, the intermediate relay coil KA45.2 and the intermediate relay coil KA45.3 respectively, and then connected to DC24V- after short-circuiting to realize the closing control of the isolating switch; Lead the DC24V+ into the "12" terminal of the normally open point of the intermediate relay KA45.1 and output it from the "8" terminal, and then lead it to the "X2" terminal of the closing indicator light HL88, and then connect it to the DC24V- through the "X1" terminal of the closing indicator light HL88 to realize the closing indication; Lead the DC24V+ into the "2" terminal of the opening button SB88, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB89 and the "10" terminal of the self-locking KA46, and then through the "3" terminal of the closing button SB89, connect the normally closed node "10" terminal in and "2" terminal out of the intermediate relay KA32.3 in series, connect the normally closed node "10" terminal in and "2" terminal out of the intermediate relay KA35.3, connect the normally closed node "12" terminal in and "4" terminal out of the intermediate relay KA47.1, and then short-circuit with the normally open node "6" terminal of the intermediate relay KA46, connect the normally closed node "9" terminal in and "1" terminal out of the intermediate relay KA45.2, and finally lead to the "14" terminal of the intermediate relay coil KA46, and then connect to the DC24V- through the "13" terminal of the intermediate relay coil KA46 to realize the opening control; Lead the DC24V+ into the "11" terminal of the normally open point of the intermediate relay KA46, and output it from the "7" terminal, and lead it to the "X2" terminal of the opening indicator light HL89, and then connect it to the DC24V- through the "X1" terminal of the opening indicator light HL89 to realize the opening indication; Lead the DC24V+ into the "2" terminal of the opening button SB91, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB90 and the "9" terminal of the self-locking KA47.2, and then through the "3" terminal of the closing button SB90, it is connected in series to the "5" terminal of the normally closed node of the intermediate relay KA47.2, and after short-circuiting, it is finally led to the "14" terminal of the intermediate relay coil KA47.1 and the intermediate relay coil KA47.2, and then through the "13" terminal of the intermediate relay coil KA47.1 and the intermediate relay coil KA47.2 to connect to the DC24V- to achieve fault reset control; Lead DC24V+ into the normally open terminal "10" of the intermediate relay KA47.2, and output it from the terminal "6", and lead it to the "X2" terminal of the fault indicator light HL90, and then connect it to DC24V- through the "X1" terminal of the fault indicator light HL90 to realize fault indication.

8. The urban rail test line DC power supply system simulation training device according to claim 1 is characterized in that: The circuit in the negative pole cabinet electrical circuit adopts a DC 24V power supply, and the DC24V+ is introduced into the opening button SB42 "2" terminal, and then led to the closing button SB41 "4" terminal and the intermediate relay self-locking point KA21.1 "11" terminal through the SB42 "1" terminal, and then connected to the normally closed node "11" terminal input and "3" terminal output of the intermediate relay KA22.1 through the lower side of the "3" terminal of SB41, connected to the normally closed node "11" terminal input and "3" terminal output of the intermediate relay KA5.1, connected to the normally closed node "11" terminal input and "3" terminal output of the intermediate relay KA9.1, connected to the normally closed node "11" terminal input and "3" terminal output of the intermediate relay KA17.1, connected to the normally closed node "10" terminal input and "2" terminal of the intermediate relay KA18.

1. Terminal, connected to the "10" terminal of the normally closed node of the intermediate relay KA19.1, terminal "2", connected to the "10" terminal of the normally closed node of the intermediate relay KA20.1, terminal "2", connected to the "11" terminal of the normally closed node of the intermediate relay KA25.1, terminal "3", connected to the "11" terminal of the normally closed node of the intermediate relay KA26.1, terminal "3", connected to the "11" terminal of the normally closed node of the intermediate relay KA29.1, terminal "3" output is short-circuited with terminal "7" of the normally open node of the self-locking point KA21.1, and then connected to the "14" terminal of the closing intermediate relay coil KA21.1, the closing intermediate relay coil KA21.2, and the closing intermediate relay coil KA21.3, and the "13" terminal output, and finally connected to DC24V-. Lead the DC24V+ into the normally open terminal "12" of the intermediate relay KA21.1, and output it from the terminal "8", and then lead it to the terminal "X1" and terminal "X0" of the closing indicator HL41, and then connect it to the DC24V-; Lead the DC24V+ into the normally closed terminal "12" of the intermediate relay KA21.1, and lead it to the terminal "4" of the opening indicator light HL42, and then connect it to the terminal "X2" and terminal "X0", and then connect it to the DC24V-; Lead the DC24V+ into the "2" terminal of the opening button SB44, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB43 and the "10" terminal of the fault reset self-locking KA22.2, and then through the "3" terminal of the closing button SB43 and the "6" terminal of the self-locking KA22.2, and after short-circuiting, it is led to the "14" terminal of the fault reset intermediate relay coil KA22.1, the fault reset intermediate relay coil KA22.2, and the "13" terminal of the fault reset intermediate relay coil KA22.3, and after short-circuiting, it is connected to the DC24V-; Lead DC24V+ into the normally open terminal "11" of the intermediate relay KA22.2, and output it from terminal "7", then lead it to the "X2" terminal and "X1" terminal of the fault indicator light HL43, and then connect it to DC24V-.

9. The urban rail test line DC power supply system simulation training device according to claim 1 is characterized in that: The circuit in the electrical circuit of the energy-consuming brake cabinet adopts a DC 24V power supply, and the DC24V+ is introduced into the "2" terminal of the opening button SB77, and then led to the "4" terminal of the closing button SB76 and the "10" terminal of the intermediate relay self-locking point KA38.2 through the "1" terminal of SB77, and then short-circuited through the "3" terminal of SB76 and the "6" terminal of the self-locking point KA38.2, and then connected to the normally open node "11" terminal of the intermediate relay KA32.2 and the intermediate relay KA35.2 on the lower side, and then passed through the normally open node "7" terminal of the intermediate relay KA32.2 and the intermediate relay KA35.2, and then led to the normally closed node "9" terminal of the intermediate relay KA40, and then short-circuited through the normally open node "5" terminal of KA40 and the normally closed node "1" terminal, and connected to the normally closed node of the intermediate relay KA53.

1. Point to terminal "3" input, terminal "11" output, connected to the normally closed node "3" terminal input, terminal "11" output of the intermediate relay KA52.1, connected to the normally closed node "3" terminal input, terminal "11" output of the intermediate relay KA51.1, connected to the normally closed node "9" terminal input, terminal "1" output of the intermediate relay KA41, connected to the normally closed node "9" terminal input, terminal "1" output of the intermediate relay KA39, connected to the normally closed node "9" terminal input, terminal "1" output of the intermediate relay KA33.2, connected to the normally closed node "9" terminal input, terminal "1" output of the intermediate relay KA36.2, and then led to the terminal "14" input, terminal "13" output of the closing and opening intermediate relay coil KA38.1 and the closing and opening intermediate relay coil KA38.2, and connected to DC24V- after short-circuiting; Lead DC24V+ into the normally open terminal "11" of the intermediate relay KA38.2, and output it to the terminal "7", and then lead it to the "X1" terminal of the closing indicator light HL76.1 and the closing indicator light HL76.2, and output it to the "X0" terminal, and then connect it to DC24V-; Lead the DC24V+ into the normally closed terminal "11" of the intermediate relay KA38.2, and lead it to the terminal "3" of the opening indicator light HL77, and then to the terminal "X2" of the opening indicator light HL77, and then to the terminal "X0" of the opening indicator light HL77, and then connect it to the DC24V-; Lead the DC24V+ into the "2" terminal of the opening button SB79, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB78 and the "10" terminal of the fault reset self-locking KA39, and then through the "3" terminal of the closing button SB78 and the "6" terminal of the self-locking KA39, after short-circuiting, respectively lead to the "14" terminal in and "13" terminal out of the fault reset intermediate relay coil KA39, and after short-circuiting, connect to the DC24V-; Lead DC24V+ to the normally open terminal "11" of the intermediate relay KA39, and output it to the terminal "7", and then lead it to the terminal "X2" of the fault indicator HL78, and output it to the terminal "X1", and then connect it to DC24V-; Lead the DC24V+ to the "2" terminal of the opening button SB81, and then through the "1" terminal, the lower side is connected to the "4" terminal of the closing button SB80 and the "10" terminal of the self-locking KA40, and then through the "3" terminal of the closing button SB80 and the "6" terminal of the self-locking KA40, short-circuit, and lead to the "14" terminal of the intermediate relay coil KA40 in the working position and test position, and the "13" terminal out, and then short-circuit and connect to the DC24V-; Lead DC24V+ into the normally open terminal "11" of the intermediate relay KA40, and output it from terminal "7", and then lead it to the "X1" terminal of the working position indicator HL80, and output it from terminal "X0", and then connect it to DC24V-; Lead the DC24V+ into the normally closed terminal "11" of the intermediate relay KA40, output from the terminal "3", lead it to the terminal "X2" of the test position indicator light HL81, output from the terminal "X0", and then connect it to the DC24V-.

10. The urban rail test line DC power supply system simulation training device according to claim 1 is characterized in that: The busbar and test line power transmission visible energy electrical circuit adopts a DC 5V power supply, DC5V+ is introduced into the normally open node "10" terminal of the intermediate relay KA21.3, and the "6" terminal is output, connected to the negative pole light strip "2" input and "1" output of the L1 test line, and finally led to DC5V-; Lead the DC5V+ to the normally open node "12" terminal of the intermediate relay KA23.3 and the normally open node "11" terminal of KA24.3, and then short-circuit the "8" terminal of KA23.3 and the "7" terminal of KA24.3, and then connect to the negative pole of the L2 DC bus light strip "2" input and "1" output, and finally lead to DC5V-; Lead the DC5V+ to the normally open node "10" terminal of the intermediate relay KA26.3 and the normally open node "10" terminal of KA29.3, then short-circuit the "6" terminal of KA26.3 and the "6" terminal of KA29.3, connect to the positive pole of the L3 DC bus light strip "2" input and "1" output, and finally lead to DC5V-; Lead the DC5V+ to the normally open node "11" terminal of the intermediate relay KA32.4 and the normally open node "11" terminal of KA35.4 respectively, then short-circuit the "7" terminal of KA32.4 and the "7" terminal of KA35.4, connect to the normally open node "9" terminal of the intermediate relay KA45.3 and the "5" terminal, then connect to the "2" input and "1" output of the three-track power supply light strip of the L4 test line, and finally lead to the DC5V-; Lead the DC5V+ to the normally open node "12" terminal of the intermediate relay KA32.4 and the normally open node "12" terminal of KA35.4 respectively, then short-circuit the "8" terminal of KA32.4 and the "8" terminal of KA35.4, connect to the normally open node "9" terminal of the intermediate relay KA48.3 and the "5" terminal, then connect to the L5 test line contact network power supply light strip "2" input and "1" output, and finally lead to DC5V-.

Images