A high-voltage circuit breaker simulation control device and its usage method

Abstract

This invention discloses a high-voltage circuit breaker simulation control device and its usage method. The control device includes a cabinet and a simulation control circuit installed inside the cabinet. The simulation control circuit includes a closing circuit, a opening circuit, and an on / off interlocking circuit. The closing circuit includes a closing control circuit and a closing indication circuit connected between the positive and negative busbars of the power supply module. The opening circuit includes an opening control circuit and an opening indication circuit connected between the positive and negative busbars of the power supply module. On / off interlocking circuits are connected in series on the closing control circuit and the opening circuit, respectively. The usage method is as follows: pressing each control button illuminates the corresponding indicator light; pressing each on / off interlocking circuit de-illuminates the indicator light in the circuit; when an alarm is issued in any circuit, pressing the reset interlocking circuit extinguishes the alarm in all current circuits. This invention's device is small in size, low in cost, easy to maintain, and offers more intuitive operation and display, effectively enhancing training results.

Description

Technical Field

[0001] This invention belongs to the field of high-voltage electrical equipment technology, and in particular relates to a high-voltage circuit breaker simulation control device and its usage method. Background Technology

[0002] Relay protection training is a crucial part of training for every enterprise in the power system. Because relay protection knowledge is relatively abstract and difficult to understand, most power generation companies and power grids establish their own training laboratories. 220kV relay protection simulations are mainly used to support training on protection devices, including relay protection devices and circuit breakers. Relay protection devices are small and inexpensive, and can be purchased directly or replaced by technical upgrades. However, circuit breakers are large, heavy, and expensive, so laboratories generally use circuit breaker simulators instead of real circuit breakers. Most existing simulated circuit breakers on the market are implemented by purchasing manufacturer-synthesized circuits. Their disadvantages include: 1) small size and use of diode lights for indicator lights, making it difficult to intuitively judge the circuit breaker status; 2) relatively high cost; 3) the need to replace faulty boards with entirely new ones, leading to high costs; 4) lack of intuitive and convenient operation, making them unsuitable for large-scale centralized training; and 5) overly complex circuit connections in integrated circuit boards, making it difficult to quickly locate circuits, hindering trainees' familiarity with circuit breaker circuits and significantly reducing training effectiveness. Summary of the Invention

[0003] The purpose of this invention is to provide a high-voltage circuit breaker simulation control device and its usage method. This circuit breaker simulation device is small in size, low in cost, easy to maintain, and offers more intuitive operation and display. Furthermore, its hard-wired electrical circuit design makes it easier for trainees to familiarize themselves with the switch circuit structure, enhancing training effectiveness. To achieve the above objectives, the invention employs the following technical advantages:

[0004] According to one aspect of the present invention, a high-voltage circuit breaker simulation control device is provided, comprising a cabinet and a simulation control circuit disposed within the cabinet. The simulation control circuit includes a closing circuit, a opening circuit, and an on / off interlocking circuit. The closing circuit includes a closing control circuit and a closing indication circuit connected between the positive and negative busbars of the power supply module. The opening circuit includes an opening control circuit and an opening indication circuit connected between the positive and negative busbars of the power supply module. An on / off interlocking circuit is connected in series on the closing control circuit and the opening circuit, respectively. The closing control circuit includes a closing control button, a first current-limiting resistor, and a closing relay. The opening control circuit includes an opening control button, a second current-limiting resistor, and an opening relay.

[0005] One end of the coil of the trip relay is connected to the negative bus of the power supply module. The other end of the coil of the trip relay is connected to one end of the second current limiting resistor through the normally closed contact of the trip relay and the on / off lockout circuit. The other end of the second current limiting resistor is connected to the positive bus of the power supply module and one end of the trip indication control circuit through the trip control button. The other end of the trip indication circuit is connected to the negative bus of the power supply module through the closing indication circuit.

[0006] One end of the coil of the closing relay is connected to the negative bus of the power supply module. The other end of the coil of the closing relay is connected to one end of the first current limiting resistor through the normally closed contact of the closing relay. The other end of the first current limiting resistor is connected to the positive bus of the power supply module and one end of the closing indication circuit through the closing control button. The other end of the closing indication circuit is connected to the negative bus of the power supply module through the opening indication circuit.

[0007] In a further preferred embodiment of the above scheme, the closing indication circuit includes a closing display control relay and a closing indicator light. One end of the first normally open contact of the closing display control relay connected in parallel with the normally open contact of the closing relay is connected to the positive bus of the power supply module. The other end of the parallel connection of the first normally open contact of the closing display control relay and the normally open contact of the closing relay is connected to one end of the opening indication circuit. The other end of the opening indication circuit is connected to the negative bus of the power supply module through the coil of the closing display control relay. One end of the second normally open contact of the closing display control relay is connected to the positive bus of the power supply module. The other end of the second normally open contact of the closing display control relay is connected to the negative bus of the power supply module through the closing indicator light. One end of the first normally closed contact of the closing display control relay is connected to the closing control button through a first current-limiting resistor. The other end of the first normally closed contact of the closing display control relay is connected to the negative bus of the power supply module through the normally closed contact of the closing relay and the coil of the closing relay.

[0008] In a further preferred embodiment of the above scheme, the tripping indication circuit includes a tripping display control relay and a tripping indicator light. One end of the first normally open contact of the tripping display control relay connected in parallel with the normally open contact of the tripping relay is connected to the positive bus of the power supply module. The other end of the parallel connection of the first normally open contact of the tripping display control relay and the normally open contact of the tripping relay is connected to one end of the second normally closed contact of the closing display control relay. The other end of the second normally closed contact of the closing display control relay is connected to the negative bus of the power supply module through the coil of the tripping display control relay. One end of the second normally open contact of the tripping display control relay is connected to the positive bus of the power supply module. The other end of the second normally open contact of the tripping display control relay is connected to the negative bus of the power supply module through the tripping indicator light. One end of the first normally closed contact of the tripping display control relay is connected to the closing control button through a second current-limiting resistor. The other end of the first normally closed contact of the tripping display control relay is connected to the negative bus of the power supply module through the normally closed contact of the tripping relay and the coil of the tripping relay.

[0009] One end of the parallel connection between the first normally open contact of the closing display control relay and the normally open contact of the closing relay is connected to the positive bus of the power supply module. The other end of the parallel connection between the first normally open contact of the closing display control relay and the normally open contact of the closing relay is connected to one end of the second normally closed contact of the opening display control relay. The other end of the second normally closed contact of the opening display control relay is connected to the negative bus of the power supply module through the coil of the closing display control relay.

[0010] In a further preferred embodiment of the above scheme, an opening and closing interlocking circuit is respectively provided between one end of the first normally closed contact of the closing display control relay and one end of the normally closed contact of the closing relay, and between one end of the normally closed contact of the opening display control relay and one end of the normally closed contact of the opening relay.

[0011] In a further preferred embodiment of the above scheme, the opening and closing interlocking circuit includes an interlocking circuit for closing, an interlocking circuit for opening, an SF6 reduction interlocking circuit, a low-pressure oil interlocking circuit, an uncharged interlocking circuit, a disconnection interlocking circuit, and a reset interlocking circuit, connected in series between one end of the first normally closed contact of the closing display control relay and one end of the normally closed contact of the closing relay, and connected in series between one end of the normally closed contact of the opening display control relay and one end of the normally closed contact of the opening relay; the interlocking circuit for closing includes a reduction relay closing closed contact, a low-pressure oil closing closed contact, and an uncharged closing open contact, connected in series between the first normally closed contact of the closing display control relay and the normally closed contact of the closing relay; the interlocking circuit for opening includes an SF6 reduction relay closing closed contact, a low-pressure oil closing closed contact, and an uncharged closing open contact, connected in series between the normally closed contact of the closing display control relay and the normally closed contact of the opening relay.

[0012] In a further preferred embodiment of the above scheme, the power supply module is installed at the top front of the cabinet. A status display area and a simulated interlocking operation area are sequentially arranged on the front of the cabinet below the power supply module. A terminal block installation area, a switching coil control area, and a relay control area are respectively arranged on the back of the cabinet from bottom to top. Terminal blocks are vertically installed on the left and right sides of the terminal block installation area. The terminal blocks are used to connect various wirings.

[0013] According to another aspect of the present invention, the present invention provides a method of using a high-voltage circuit breaker simulation control device, the method comprising the following steps:

[0014] Press the closing control button and the opening control button respectively. The contacts of the closing display control relay and the opening display control relay will close, causing the corresponding closing indicator light and opening indicator light to illuminate.

[0015] Press the corresponding SF6 reduction interlocking circuit, low pressure oil interlocking circuit, no energy storage interlocking circuit, open circuit interlocking circuit and reset interlocking circuit in the opening and closing interlocking circuit respectively, and then press the closing relay to reliably lock the corresponding contacts of the relay in the circuit, and the closing indicator light will not light up.

[0016] Press the SF6 reduction interlock circuit, low pressure oil interlock circuit, no energy storage interlock circuit, disconnection interlock circuit and reset interlock circuit respectively. When an alarm is issued in any of the circuits, press the reset interlock circuit to extinguish the alarms in the current circuits.

[0017] Because the present invention adopts the above-described technical solution, the present invention has the following technical effects:

[0018] This circuit breaker simulator is small in size, low in cost, easy to maintain, and offers more intuitive operation and display. Its hard-wired electrical circuit design makes it easier for trainees to familiarize themselves with the switch circuit structure, enhancing training effectiveness. The pump in this invention displays the opening and closing of the circuit based on SF6 high-voltage switching conditions (low oil pressure, no energy storage, SF6 reduction, control circuit disconnection, etc.). The circuit wiring is simple, and the circuit can be located quickly when a protection device malfunctions, facilitating trainees' familiarization with circuit breaker circuits and significantly improving training effectiveness. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the front structure of the cabinet of a high-voltage circuit breaker simulation control device invented by the invention.

[0020] Figure 2 This is a schematic diagram of the back structure of a cabinet for a high-voltage circuit breaker simulation control device invented by the invention.

[0021] Figure 3 This is the overall control principle diagram of the analog control loop of the present invention;

[0022] Figure 4 This is the electrical schematic diagram of the closing circuit of the present invention;

[0023] Figure 5 This is the electrical schematic diagram of the tripping circuit of the present invention;

[0024] Figure 6 This is the electrical control schematic diagram of the opening and closing interlocking circuit of the present invention. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of the invention, and these aspects of the invention can be achieved even without these specific details.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, a high-voltage circuit breaker simulation control device according to the invention includes a cabinet 1 and a simulation control circuit installed inside the cabinet 1. The simulation control circuit includes a closing circuit, a opening circuit, and an on / off interlocking circuit. A power supply module 10 is installed at the top front of the cabinet 1. A status display area 20 and a simulation interlocking operation area 30 are sequentially arranged below the power supply module 10 on the front of the cabinet 1. A terminal block mounting area 2, an on / off coil control area 3, and a relay control area 4 are respectively arranged from bottom to top on the back of the cabinet 1. The terminal block mounting area 2, the on / off coil control area 3, and the relay control area 4 are located on the back of the cabinet 1. Terminal blocks 21 are vertically installed on the left and right sides of the installation area 2, respectively; the closing circuit includes a closing control circuit and a closing indication circuit connected between the positive and negative busbars of the power supply module 10, and the opening circuit includes an opening control circuit and an opening indication circuit connected between the positive and negative busbars of the power supply module 10. An on / off interlocking circuit is connected in series in both the closing control circuit and the opening circuit; the closing control circuit includes a closing control button SB-H, a first current-limiting resistor R01, and a closing relay; the opening control circuit includes an opening control button... The circuit includes a button SB-T1, a second current-limiting resistor R02, and a tripping relay. One end of the coil IT1 of the tripping relay is connected to the negative bus of the power supply module 10. The other end of the coil is connected to one end of the second current-limiting resistor R02 through the normally closed contact IT1-1 of the tripping relay and a locking circuit. The other end of the second current-limiting resistor R02 is connected to the positive bus of the power supply module 10 and one end of the tripping indication control circuit through the tripping control button SB-T1. The other end of the tripping indication circuit is connected to the closing indication circuit. The coil IC of the closing relay is connected to the negative bus of the power supply module 10. One end of the coil IC of the closing relay is connected to the negative bus of the power supply module 10. The other end of the coil IC of the closing relay is connected to one end of the first current limiting resistor R01 through the normally closed contact IC-1 of the closing relay. The other end of the first current limiting resistor R01 is connected to the positive bus of the power supply module 10 and one end of the closing indication circuit through the closing control button SB-H. The other end of the closing indication circuit is connected to the negative bus of the power supply module 10 through the opening indication circuit.

[0027] In this invention, Figure 3 , Figure 4 and Figure 5As shown, the closing indication circuit includes a closing display control relay and a closing indicator light H. One end of the parallel connection of the first normally open contact UC-1 of the closing display control relay and the normally open contact IC-2 of the closing relay is connected to the positive bus of the power supply module 10. The other end of the parallel connection of the first normally open contact UC-1 of the closing display control relay and the normally open contact IC-2 of the closing relay is connected to one end of the opening indication circuit. The other end of the opening indication circuit is connected to the negative bus of the power supply module 10 through the coil UC1 of the closing display control relay. One end of the second normally open contact UC-2 of the closing display control relay is connected to the positive bus of the power supply module 10. The other end of circuit 2 is connected to the negative bus of power supply module 10 via the closing indicator light H; one end of the first normally closed contact UC of the closing display control relay is connected to the closing control button SB-H via the first current limiting resistor R01; the other end of the first normally closed contact UC of the closing display control relay is connected to the negative bus of power supply module 10 via the normally closed contact IC-1 and the coil IC of the closing relay; the opening indication circuit includes an opening display control relay and an opening indicator light T, one end of the parallel connection of the first normally open contact UT1-1 and the normally open contact IT1-2 of the opening display control relay is connected to the positive bus of power supply module 10, and the first normally open contact UT1-1 of the opening display control relay is connected to the positive bus of power supply module 10. One end of the normally open contact IT1-2 of the tripping relay is connected in parallel to one end of the second normally closed contact UC-3 of the closing display control relay. The other end of the second normally closed contact UC-3 of the closing display control relay is connected to the negative bus of the power supply module 10 through the coil UT1 of the tripping display control relay. One end of the second normally open contact UT1-2 of the tripping display control relay is connected to the positive bus of the power supply module 10. The other end of the second normally open contact UT1-2 of the tripping display control relay is connected to the negative bus of the power supply module 10 through the tripping indicator light T1. One end of the first normally closed contact UT of the tripping display control relay is connected to the closing control button SB-T1 through the second current-limiting resistor R02. The tripping... The other end of the first normally closed contact UT of the display control relay is connected to the negative bus of the power supply module 10 through the normally closed contact IT1-1 of the trip relay and the coil IT1 of the trip relay; one end of the parallel connection of the first normally open contact UC-1 of the closing display control relay and the normally open contact IC-2 of the closing relay is connected to the positive bus of the power supply module 10; the other end of the parallel connection of the first normally open contact UC-1 of the closing display control relay and the normally open contact IC-2 of the closing relay is connected to one end of the second normally closed contact UT-1 of the trip display control relay; the other end of the second normally closed contact UT-1 of the trip display control relay is connected to the negative bus of the power supply module 10 through the coil UC1 of the closing display control relay.

[0028] In this invention, Figure 3 and Figure 6 As shown, an on / off interlocking circuit is respectively set between one end of the first normally closed contact UC of the closing display control relay and one end of the normally closed contact IC-1 of the closing relay, and between one end of the normally closed contact UT of the opening display control relay and one end of the normally closed contact IT1-1 of the opening relay; the on / off interlocking circuit includes a blocking circuit for the closing circuit, a blocking circuit for the opening circuit, an SF6 reduction blocking circuit, a low-pressure oil blocking circuit, an uncharged blocking circuit, a disconnection blocking circuit, and a reset blocking circuit between one end of the first normally closed contact UC of the closing display control relay and one end of the normally closed contact IC-1 of the closing relay, and between one end of the normally closed contact UT of the opening display control relay and one end of the normally closed contact IT1-1 of the opening relay; the blocking circuit for the closing circuit includes an SF6 reduction circuit between the first normally closed contact UC of the closing display control relay and one end of the normally closed contact IC-1 of the closing relay. The circuit includes: an electrical closing contact H-SF6, a low oil pressure closing contact HHL, and an uncharged closing contact MH; the interlocking tripping circuit includes an SF6 reduction relay closing contact T-SF6, a low oil pressure closing contact THL, and an uncharged closing contact MT connected in series between the normally closed contact UT of the circuit breaker display control relay and the normally closed contact IT1-1 of the tripping relay; the SF6 reduction interlocking circuit includes an SF6 reduction interlocking button SB-SF6, an interlocking relay, and a reduction interlocking indicator HF; the low-pressure oil interlocking circuit includes a low oil pressure interlocking button SB-HLX, a low oil pressure interlocking relay, and a low oil pressure indicator HLX; the uncharged interlocking circuit includes an uncharged interlocking button SB-M, an uncharged relay, and an uncharged indicator ML; the disconnection interlocking circuit includes a disconnection button SB-KD, a disconnection relay, and a control circuit disconnection indicator KD; and the reset interlocking circuit includes a reset button SB-XH and a reset relay.

[0029] In this invention, Figures 1 to 6 As shown, the method of using a high-voltage circuit breaker simulation control device of the present invention includes the following steps: Press the closing control button SB-H and the opening control button SB-T1 respectively, the contacts of the closing display control relay and the opening display control relay close, so that the corresponding closing indicator light H and opening indicator light T illuminate; Press the corresponding SF6 reduction lockout circuit, low-pressure oil lockout circuit, no-energy lockout circuit, open-circuit lockout circuit and reset lockout circuit in the opening and closing lockout circuit respectively, and then press the closing relay IC, so that the contacts of the relays in the circuit are reliably locked, and the closing indicator light H does not illuminate; Press the SF6 reduction lockout circuit, low-pressure oil lockout circuit, no-energy lockout circuit, open-circuit lockout circuit and reset lockout circuit respectively, when a warning is issued in any circuit, press the reset lockout circuit to extinguish the warning in the current circuit.

[0030] Combination Figures 3 to 6 The principle of the analog control device of the present invention will be further explained;

[0031] by Figure 4 Take phase A in the example:

[0032] Closing operation: Figure 4 When the closing button SB-HA for phase A is pressed, the closing relay ICA in the phase A control circuit is energized. After the closing relay ICA is energized, the auxiliary node ICA-2 in the closing indicator circuit closes, thereby energizing the closing display control relay UCA1. The energization of the closing display control relay UCA1 causes its first normally open contact UCA-1 to close, which in turn closes the auxiliary node UCA-2, and the closing indicator light HA illuminates; the first normally open contact UC-1 of the closing display control relay UCA1...

[0033] Opening operation: Figure 5 When the A-phase trip button SB-TA1 is pressed, the trip relay ITA1 in the A-phase control circuit is energized. After the trip relay ITA1 is energized, the auxiliary node ITA1-2 of the trip indicator circuit is closed, thereby energizing the trip display control relay UTA1. After the trip display control relay UTA1 is energized, the auxiliary node UTA1-2 is closed, and the trip indicator light TA1 illuminates.

[0034] Lockout circuit operation:

[0035] 1) SF6 reduction blocking circuit: Figure 6 When the SF6 lowering lockout button SB-SF6 is pressed, the coil SF of the SF6 lowering lockout relay is energized, thereby closing the normally closed contact SF6-1 of the SF6 lowering lockout relay, and the lowering lockout indicator HF lights up.

[0036] 2) Low oil pressure interlock circuit: Figure 6 When the low oil pressure lockout button SB-HLX is pressed, the coil HLX of the low oil pressure lockout relay is energized, thereby closing the normally closed low oil pressure contact HLX-1 and illuminating the low oil pressure indicator light HLX.

[0037] 3) Non-energy-storage interlocking circuit: Figure 6 When the non-energy-stored interlock button SB-M is pressed, the coil M of the non-energy-stored relay is energized, thereby closing the normally closed non-energy-stored contact M-1 and illuminating the non-energy-stored indicator light ML.

[0038] 4) Disconnection interlocking circuit: Figure 6 When the control circuit disconnection button SB-KD is pressed, the coil KD of the control circuit disconnection relay is energized, thereby closing the normally closed contact KD-1 of the control circuit disconnection, and the control circuit disconnection indicator KD lights up.

[0039] 5) Reset Circuit: Press the reset button SB-XH, the coil XH of the reset relay is energized, thereby opening its normally closed contacts XH-1, XH-2, XH-3, and XH-4, and turning off the corresponding HFL indicator, HLX indicator, ML indicator, and KD indicator.

[0040] 6) Interlocking closing circuit: Figure 6 In the middle, press the SF6 reduction operation button SB-SF6, the low oil pressure operation button SB-HLX, and the no-energy-stored operation button SB-M in the on / off interlock circuit respectively. Figure 4 In the A-phase closing control circuit, normally closed nodes H-SF6A, HHLA, and MHA will be disconnected respectively. Then, when the closing control button SB-HA is pressed again, the coil ICA of the closing display relay will not be energized, and the first current limiting resistor R01A will play a current limiting protection role, thereby achieving the purpose of locking the closing circuit. Similarly, the locking closing safety operation of phases B and C is the same as that of phase A.

[0041] 7) Interlocking trip circuit: Figure 6 Press the SF6 reduction operation button SB-SF6, the low oil pressure operation button SB-HLX, and the no-energy-stored operation button SB-M respectively in the switch's interlocking circuit. Figure 5 In the A-phase tripping control circuit, normally closed nodes T-SF6A, THLA, and MTA will be disconnected respectively. When the tripping control button SB-TA is pressed again, the coil ITA1 of the tripping display relay will not be energized, and the second current-limiting resistor R02A will play a current-limiting protection role, thereby achieving the purpose of locking the tripping circuit. Similarly, the safety operation of the B-phase and C-phase tripping is the same as that of the A-phase, and its operation and display are more intuitive, which can effectively enhance the training effect.

[0042] The above description is only a preferred embodiment of the invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the invention, and these improvements and modifications should also be considered within the scope of protection of the invention.

Claims

1. A high-voltage circuit breaker simulation control device, characterized in that: The system includes a cabinet (1) and a simulation control circuit installed inside the cabinet (1). The simulation control circuit includes a closing circuit, a closing circuit, and an on / off interlocking circuit. The closing circuit includes a closing control circuit and a closing indication circuit connected between the positive and negative busbars of the power supply module (10). The closing circuit includes a closing control circuit and a closing indication circuit connected between the positive and negative busbars of the power supply module (10). An on / off interlocking circuit is connected in series on the closing control circuit and the closing circuit, respectively. The closing control circuit includes a closing control button (SB-H), a first current limiting resistor (R01), and a closing relay. The closing control circuit includes a closing control button (SB-T1), a second current limiting resistor (R02), and a closing relay. One end of the coil (IT1) of the trip relay is connected to the negative bus of the power supply module (10). The other end of the coil of the trip relay is connected to one end of the second current limiting resistor (R02) through the normally closed contact (IT11-1) of the trip relay and the on / off lockout circuit. The other end of the second current limiting resistor (R02) is connected to the positive bus of the power supply module (10) and one end of the trip indication control circuit through the trip control button (SB-T1). The other end of the trip indication circuit is connected to the negative bus of the power supply module (10) through the closing indication circuit. One end of the coil (IC) of the closing relay is connected to the negative bus of the power supply module (10), and the other end of the coil (IC) of the closing relay is connected to one end of the first current limiting resistor (R01) through the normally closed contact (IC-1) of the closing relay. The other end of the first current limiting resistor (R0) is connected to the positive bus of the power supply module (10) and one end of the closing indication circuit through the closing control button (SB-H). The other end of the closing indication circuit is connected to the negative bus of the power supply module (10) through the opening indication circuit. The opening and closing interlocking circuit includes a closing interlocking circuit, a closing interlocking circuit, an SF6 reduction interlocking circuit, a low-pressure oil interlocking circuit, an unstored energy interlocking circuit, a disconnection interlocking circuit, and a reset interlocking circuit connected in series between one end of the first normally closed contact (UC) of the closing display control relay and one end of the normally closed contact (IC-1) of the closing relay, and a closing interlocking circuit connected in series between one end of the normally closed contact (UT) of the opening display control relay and one end of the normally closed contact (IT1-1) of the opening relay; the closing interlocking circuit includes a closing interlocking circuit connected in series between the first normally closed contact (UC) of the closing display control relay and one end of the normally closed contact (IC-1) of the opening relay, and a closing interlocking circuit connected in series between one end of the normally closed contact (UT) of the opening display control relay and one end of the normally closed contact (IT1-1) of the opening relay. The control relay's first normally closed contact (UC) and the closing relay's normally closed contact (IC-1) include the SF6 reduction relay closing contact (H-SF6), low oil pressure closing contact (HHL), and uncharged closing contact (MH); the interlocking tripping circuit includes the SF6 reduction relay closing contact (T-SF6), low oil pressure closing contact (THL), and uncharged closing contact (MT) connected in series between the normally closed contact (UT) of the tripping display control relay and the normally closed contact (IT1-1) of the tripping relay. The SF6 reduction interlock circuit includes an SF6 reduction interlock button (SB-SF6), an interlock relay, and a reduction interlock indicator (HF); the low-pressure oil interlock circuit includes a low-pressure oil interlock button (SB-HLX), a low-pressure oil interlock relay, and a low-pressure oil indicator (HLX); the non-charged interlock circuit includes a non-charged interlock button (SB-M), a non-charged relay, and a non-charged indicator (ML); the disconnection interlock circuit includes a disconnection button (SB-KD), a disconnection relay, and a control circuit disconnection indicator (KD); and the reset interlock circuit includes a reset button (SB-XH) and a reset relay.

2. The high-voltage circuit breaker simulation control device according to claim 1, characterized in that: The closing indication circuit includes a closing display control relay and a closing indicator light (H). One end of the parallel connection of the first normally open contact (UC-1) of the closing display control relay and the normally open contact (IC-2) of the closing relay is connected to the positive bus of the power supply module (10). The other end of the parallel connection of the first normally open contact (UC-1) of the closing display control relay and the normally open contact (IC-2) of the closing relay is connected to one end of the opening indication circuit. The other end of the opening indication circuit is connected to the negative bus of the power supply module (10) through the coil (UC1) of the closing display control relay. One end of the second normally open contact (UC-2) is connected to the positive bus of the power supply module (10), and the other end of the second normally open contact (UC-2) of the closing display control relay is connected to the negative bus of the power supply module (10) through the closing indicator light (H); one end of the first normally closed contact (UC) of the closing display control relay is connected to the closing control button (SB-H) through the first current limiting resistor (R01); the other end of the first normally closed contact (UC) of the closing display control relay is connected to the negative bus of the power supply module (10) through the normally closed contact (IC-1) of the closing relay and the coil (IC) of the closing relay.

3. The high-voltage circuit breaker simulation control device according to claim 2, characterized in that: The tripping indication circuit includes a tripping display control relay and a tripping indicator light (T). One end of the first normally open contact (UT1-1) of the tripping display control relay and the normally open contact (IT1-2) of the tripping relay are connected in parallel to the positive bus of the power supply module (10). The other end of the first normally open contact (UT1-1) of the tripping display control relay and the normally open contact (IT1-2) of the tripping relay are connected to one end of the second normally closed contact (UC-3) of the closing display control relay. The other end of the second normally closed contact (UC-3) of the closing display control relay is connected to the negative bus of the power supply module (10) through the coil (UT1) of the tripping display control relay. The circuit breaker is connected as follows: one end of the second normally open contact (UT1-2) of the tripping display control relay is connected to the positive bus of the power supply module (10); the other end of the second normally open contact (UT1-2) of the tripping display control relay is connected to the negative bus of the power supply module (10) through the tripping indicator light (T1); one end of the first normally closed contact (UT) of the tripping display control relay is connected to the closing control button (SB-T1) through the second current limiting resistor (R02); the other end of the first normally closed contact (UT) of the tripping display control relay is connected to the negative bus of the power supply module (10) through the normally closed contact (IT1-1) of the tripping relay and the coil (IT1) of the tripping relay. One end of the parallel connection of the first normally open contact (UC-1) of the closing display control relay and the normally open contact (IC-2) of the closing relay is connected to the positive bus of the power supply module (10). The other end of the parallel connection of the first normally open contact (UC-1) of the closing display control relay and the normally open contact (IC-2) of the closing relay is connected to one end of the second normally closed contact (UT-1) of the opening display control relay. The other end of the second normally closed contact (UT-1) of the opening display control relay is connected to the negative bus of the power supply module (10) through the coil (UC1) of the closing display control relay.

4. The high-voltage circuit breaker simulation control device according to claim 3, characterized in that: An opening and closing interlocking circuit is respectively set between one end of the first normally closed contact (UC) of the closing display control relay and one end of the normally closed contact (IC-1) of the closing relay, and between one end of the normally closed contact (UT) of the opening display control relay and one end of the normally closed contact (IT1-1) of the opening relay.

5. The high-voltage circuit breaker simulation control device according to claim 1, characterized in that: The power supply module (10) is set at the top front of the cabinet (1). A status display area (20) and a simulated interlocking operation area (30) are set in sequence on the front of the cabinet (1) and below the power supply module (10). A terminal block installation area (2), a circuit breaker coil control area (3) and a relay control area (4) are set on the back of the cabinet (1) from bottom to top. Terminal blocks are vertically installed on the left and right sides of the terminal block installation area (2).

6. A method of using a high-voltage circuit breaker simulation control device as described in any one of claims 1 to 5, characterized in that: The method of use includes the following steps: Press the closing control button (SB-H) and the opening control button (SB-T1) respectively. The contacts of the closing display control relay and the opening display control relay will close, causing the corresponding closing indicator (H) and opening indicator (T) to light up. Press the corresponding SF6 reduction interlocking circuit, low pressure oil interlocking circuit, no energy storage interlocking circuit, open circuit interlocking circuit and reset interlocking circuit in the opening and closing interlocking circuit respectively, and then press the closing relay (IC) to reliably lock the corresponding contacts of the relay in the circuit, and the closing indicator light (H) will not light up. Press the SF6 reduction interlock circuit, low pressure oil interlock circuit, no energy storage interlock circuit, disconnection interlock circuit and reset interlock circuit respectively. When an alarm is issued in any of the circuits, press the reset interlock circuit to extinguish the alarms in the current circuits.

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