Loop-visualized intelligent terminal training platform

Abstract

The utility model provides an intelligent terminal training platform with a visual loop, which relates to the technical field of power distribution training equipment and comprises a platform body, and a tripping and closing opening loop module, a pressure opening loop module, a tripping loop module and a closing loop module are arranged in the platform body. Circuit diagrams of all the modules are drawn on the platform body, and at least a terminal row terminal, a handle terminal, a pressing plate terminal and a five-prevention locking terminal are led out from the interior of the platform body to the corresponding positions of the circuit diagrams. The tripping and closing input loop module, the tripping loop module and the closing loop module are used for performing protection tripping and closing operation training, and the pressure input loop module is used for cooperating with the tripping and closing input loop module, the tripping loop module and the closing loop module to perform protection tripping and closing operation training with pressure; the platform body is also provided with an indication module which is used for displaying the current operation state of the training platform. According to the scheme, the training effect can be improved by visually displaying the states of the operation loop and the training platform.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution training equipment, in particular to an intelligent terminal training platform with loop visualization. Background Art

[0002] Intelligent terminal equipment is equipment that supports digital substations. It provides a digital interface for traditional circuit breakers and has a grounding operation box function. It can be used as an intelligent accessory for traditional circuit breakers. For example, the PRS-7789 intelligent terminal device receives control instructions from the associated bay layer equipment through the optical fiber GOOSE network or point-to-point optical fiber connection, completes the phase-splitting or three-phase operation of the circuit breaker, and collects the relevant status signals of the circuit breaker and uploads them to the bay layer equipment through optical fiber. PRS-7789 is used in conjunction with circuit breakers with phase-splitting or three-phase operation at voltage levels of 220kV and above, and is suitable for dual configuration occasions. The device adopts a whole-layer enclosed design with strong anti-interference ability and can be placed on-site near the circuit breaker. Usually, in order for operators to become familiar with the use and principles of intelligent terminals as soon as possible, training and learning are required.

[0003] At present, the common form of training for smart terminals is the configuration of smart terminal screens. In this form, trainees can only see the backplane and terminal block of the smart terminal, but have no intuitive understanding of the relevant circuits and principles of the actual smart terminal, and the training effect is poor. Moreover, during the operation, it is difficult for trainees to know the current status of the training platform, especially for trainees with weak foundations, who often do not know what operations are being performed and the status of the training platform, which leads to poor training results. Utility Model Content

[0004] In view of this, in order to address the above shortcomings, it is necessary to propose a circuit visualization intelligent terminal training platform to improve the training effect by intuitively displaying the status of the operation loop and training platform.

[0005] The utility model provides a circuit visualized intelligent terminal training platform, which includes: a platform body, wherein a tripping and closing opening circuit module, a pressure opening circuit module, a tripping circuit module and a closing circuit module are arranged inside the platform body; a circuit diagram of each module is drawn on the platform body, and at least a terminal block terminal, a handle terminal, a pressure plate terminal and a five-protection locking terminal are led out from the inside of the platform body to the corresponding position of the circuit diagram; the tripping and closing opening circuit module, the tripping circuit module and the closing circuit module are used for training on protection tripping and closing operations, and the pressure opening circuit module is used for cooperating with the tripping and closing opening circuit module, the tripping circuit module and the closing circuit module for training on protection tripping and closing operations with pressure; an indication module is also arranged on the platform body, and the indication module is used to display the current operation status of the training platform.

[0006] Preferably, the circuit of the trip and close input loop module includes:

[0007] The positive terminal of AC contactor KM2 is connected to one end of terminal block terminal 4Q1D2, the other end of terminal block terminal 4Q1D2 is connected to one end of pressure monitoring relay contact 11YJJ-K, the other end of pressure monitoring relay contact 11YJJ-K is connected to one end of terminal block terminal 4Q1D6, and the other end of terminal block terminal 4Q1D6 is connected to the positive terminal of the AC contactor; Two pressure monitoring relay contacts 11YJJ-K are arranged in parallel

[0008] Terminal block terminal 4C1D14 is respectively connected to terminal block terminal 4Q1D6 and terminal block terminal 4C1D15. Terminal block terminal 4C1D14 is also connected to one end of pressing plate terminal 4C1LP4. The other end of pressing plate terminal 4C1LP4 is connected to one end of reclosing outlet contact 4H. The other end of reclosing outlet contact 4H is successively connected in series with terminal block terminal 4C1D19, reclosing relay 1ZHJ, reclosing relay 2ZHJ and resistor R and then connected to one end of terminal block terminal 4Q1D29. The other end of terminal block terminal 4Q1D29 is connected to the negative terminal of AC contactor KM2; Among them, in reclosing outlet contact 4H, the two ends of the closing A contact are respectively connected to pressing plate terminal 4C1LP4 and terminal block terminal 4C1D18, and terminal block terminal 4C1D18 is connected to terminal block terminal 4C1D19; The two ends of the closing B contact are respectively connected to pressing plate terminal 4C1LP4 and terminal block terminal 4C1D21, and terminal block terminal 4C1D21 is connected to terminal block terminal 4C1D18; The two ends of the closing C contact are respectively connected to pressing plate terminal 4C1LP4 and terminal block terminal 4C1D24, and terminal block terminal 4C1D24 is connected to terminal block terminal 4C1D21;

[0009] Terminal block terminal 4C2D1 is respectively connected to the positive terminal of AC contactor KM2, terminal block terminal 4C2D2, and one end of the remote control of change-over handle 4QK. The other end of terminal block terminal 4C2D2 is connected to one end of five-prevention interlock contact 4BS. The other end of five-prevention interlock contact 4BS is connected to terminal block terminal 4C2D4. Terminal block terminal 4C2D4 is respectively connected to one end of the synchronization manual closing and forced manual closing of change-over handle 4QK. The other end of the synchronization manual closing of change-over handle 4QK is connected to terminal block terminal 4C2D12, and terminal block terminal 4C2D12 is also connected to terminal block terminal 4C2D13. The other end of the remote control of change-over handle 4QK is connected to terminal block terminal 4C2D6, and terminal block terminal 4C2D6 is also connected to one end of pressure plate terminal 4C1LP8. The other end of pressure plate terminal 4C1LP8 is connected to terminal block terminal 4C2D13. Terminal block terminal 4C2D13 is also successively connected in series with remote trip and remote close outlet contact CJ08, terminal block terminal 4C2D10, terminal block terminal 4Q1D11, pressure monitoring relay contact 3YJJ-K, manual closing relay 1SHJ, manual closing relay 2SHJ, resistor R and then connected to terminal block terminal 4Q1D29.

[0010] The other end of the forced manual operation of change-over handle 4QK is respectively connected to one end of the manual closing and manual tripping of operation handle 4KK. The other end of the manual closing of operation handle 4KK is connected to terminal block terminal 4Q1D12. The other end of terminal block terminal 4Q1D12 is connected in series with pressure monitoring relay contact 21YJJ-K and then connected between pressure monitoring relay contact 3YJJ-K and manual closing relay 1SHJ.

[0011] Terminal block terminal 4C2D6 is also successively connected in series with pressure plate terminal 4C1LP7, remote trip and remote close outlet contact CJ07, terminal block terminal 4C2D9, terminal block terminal 4Q1D14, manual tripping relay STJA, manual tripping relay STJB, manual tripping relay STJC, resistor R and then connected to terminal block terminal 4Q1D29. Terminal block terminal 4Q1D14 is also connected to terminal block terminal 4Q1D15, and terminal block terminal 4Q1D15 is also connected to the other end of the manual tripping of operation handle 4KK. One end of closing-after relay HHJ is connected between terminal block terminal 4Q1D11 and pressure monitoring relay contact 3YJJ-K, and the other end is connected in series with resistor R and then connected to terminal block terminal 4Q1D29. One end of the closing-after relay is also connected between terminal block terminal 4Q1D14 and manual tripping relay STJA, and the other end is connected in series with resistor R and then connected to terminal block terminal 4Q1D29.

[0012] One end of the terminal 4C1D1 of the terminal block is connected to the positive terminal of the AC contactor KM2, and the other end is connected to the terminal 4Q1D29 of the terminal block after being connected in series with the photodiode D1, the trip relay 11TJF, the trip relay 12TJF, the trip relay 13TJF, and the resistor R; the positive electrode of the photodiode D1 is connected in parallel with the photodiode D2, the negative electrode of the photodiode D2 is connected to the first end of the optocoupler OC1, the second end of the optocoupler OC1 is connected to the terminal 4Q1D29 of the terminal block, the third end of the optocoupler OC1 is connected to the chip CPU, and the fourth end of the optocoupler OC1 is grounded.

[0013] Preferably, in the trip and close input circuit, the contacts 11YJJ-K, 3YJJ-K, and 21YJJ-K of the pressure monitoring relay are respectively taken from the pressure monitoring relays 11YJJ, 3YJJ, and 21YJJ in the pressure input circuit module.

[0014] Preferably, the circuit of the pressure input circuit module includes:

[0015] The terminal 4Q1D2 of the terminal block is connected to the positive terminal of the AC contactor KM2; one end of the terminal 4Q1D4 of the terminal block is connected to the positive terminal of the AC contactor KM2, and the other end is connected to the terminal 4Q1D29 of the terminal block after being connected in series with the terminal 4Q1D17, the resistor R, the pressure monitoring relay 21YJJ, and the resistor R in sequence, and the terminal 4Q1D29 is also connected to the negative terminal of the AC contactor KM2; one end of the terminal 4Q1D21 of the terminal block is connected to the input end of the pressure monitoring relay 21YJJ, and the other end is connected to the negative terminal of the AC contactor KM2;

[0016] The terminal 4Q1D18 of the terminal block is connected to the terminal 4Q1D17, and the terminal 4Q1D18 is also connected to the terminal 4Q1D29 of the terminal block after being connected in series with the resistor R, the pressure monitoring relay 3YJJ, and the resistor R in sequence; one end of the terminal 4Q1D22 of the terminal block is connected to the input end of the pressure monitoring relay 3YJJ, and the other end is connected to the negative terminal of the AC contactor KM2;

[0017] The terminal 4Q1D19 of the terminal block is connected to the terminal 4Q1D18, and the terminal 4Q1D19 is also connected to the terminal 4Q1D29 of the terminal block after being connected in series with the resistor R, the pressure monitoring relay 11YJJ, and the resistor R in sequence; one end of the terminal 4Q1D23 of the terminal block is connected to the input end of the pressure monitoring relay 11YJJ, and the other end is connected to the negative terminal of the AC contactor KM2; the contact 4YJJ-K of the pressure monitoring relay is connected in parallel with the pressure monitoring relay 11YJJ;

[0018] The terminal 4Q1D25 of the terminal block is connected to the positive terminal of the AC contactor KM2. The terminal 4Q1D25 of the terminal block is also connected to the terminal 4Q1D29 of the terminal block after sequentially connecting in series a resistor R, a pressure monitoring relay 4YJJ, and a resistor R; the terminal 4Q1D26 of the terminal block is connected to the input terminal of the pressure monitoring relay 4YJJ.

[0019] Preferably, in the pressure input circuit module, the contact 4YJJ-K of the pressure monitoring relay is the pressure monitoring relay 4YJJ in the pressure input circuit module.

[0020] Preferably, the circuit of the trip circuit module includes:

[0021] The terminal 4Q1D2 of the terminal block is connected to the positive terminal of the AC contactor KM2. The terminal 4Q1D2 of the terminal block is also sequentially connected in series with an in-position relay HWJA, a resistor R, a resistor R, and the terminal 4K1D1 of the terminal block; the first end of the optocoupler OC2 is connected to the output terminal of the in-position relay HWJA, the second end of the optocoupler OC2 is connected between two resistors R, the third end of the optocoupler OC2 is connected to the CPU, and the fourth end is grounded; the terminal 4Q1D5 of the terminal block is connected to the positive terminal of the AC contactor KM2. The terminal 4Q1D5 of the terminal block is also sequentially connected in series with the contact 11TJF-K of the trip relay, a trip hold relay TBJA, the terminal 4K1D2 of the terminal block, and one end of the A-phase of the circuit breaker trip coil. The other end of the A-phase of the circuit breaker trip coil is connected to the negative terminal of the AC contactor KM2. The terminal 4K1D2 of the terminal block is connected to the terminal 4K1D1 of the terminal block; one end of the contact TBJA-K of the trip hold relay is connected to the terminal 4Q1D2 of the terminal block, and the other end is connected to the input terminal of the trip hold relay TBJA; the contact STJA-K of the manual trip relay is connected in parallel across the two ends of the contact 11TJF-K of the trip relay; the two ends of the contact 11YJJ-K of the pressure monitoring relay are respectively connected to the terminal 4Q1D5 and the terminal 4Q1D2 of the terminal block, and the contact 11YJJ-K of the pressure monitoring relay is also connected in parallel across the two ends of the contact 11YJJ-K of the pressure monitoring relay; the trip A contact is connected to the terminal 4Q1D5 of the terminal block, and the trip A contact is also sequentially connected in series with the pressure plate terminal 4C1LP1 and the terminal 4C1D4 of the terminal block. The terminal 4C1D5 is respectively connected to the terminal 4C1D4 and the input terminal of the trip hold relay TBJA; the terminal 4Q1D29 of the terminal block is connected to the negative terminal of the AC contactor KM2;

[0022] Terminal block terminal 4Q1D2 is also successively connected in series with the closing relay HWJB, resistor R, resistor R, and terminal block terminal 4K1D4; the first end of the optocoupler OC3 is connected to the output end of the closing relay HWJB, the second end of the optocoupler OC3 is connected between the two resistors R, the third end of the optocoupler OC3 is connected to the CPU, and the fourth end is grounded; terminal block terminal 4Q1D5 is also successively connected in series with the tripping relay contact 12TJF-K, the trip hold relay TBJB, terminal block terminal 4K1D5, and one end of the B-phase of the circuit breaker tripping coil. The other end of the B-phase of the circuit breaker tripping coil is connected to the negative terminal of the AC contactor KM2. Terminal block terminal 4K1D5 is connected to terminal block terminal 4K1D4; one end of the trip hold relay contact TBJB-K is connected to terminal block terminal 4Q1D2, and the other end is connected to the input end of the trip hold relay TBJB; the hand trip relay contact STJB-K is connected in parallel across the two ends of the tripping relay contact 12TJF-K; the trip B contact is connected to terminal block terminal 4Q1D5, and the trip B contact is also successively connected in series with the pressure plate terminal 4C1LP2 and terminal block terminal 4C1D7. Terminal block terminal 4C1D8 is respectively connected to terminal block terminal 4C1D7 and the input end of the trip hold relay TBJB;

[0023] Terminal block terminal 4Q1D2 is also successively connected in series with the closing relay HWJC, resistor R, resistor R, and terminal block terminal 4K1D7; the first end of the optocoupler OC4 is connected to the output end of the closing relay HWJC, the second end of the optocoupler OC4 is connected between the two resistors R, the third end of the optocoupler OC4 is connected to the CPU, and the fourth end is grounded; terminal block terminal 4Q1D5 is also successively connected in series with the tripping relay contact 13TJF-K, the trip hold relay TBJC, terminal block terminal 4K1D8, and one end of the C-phase of the circuit breaker tripping coil. The other end of the C-phase of the circuit breaker tripping coil is connected to the negative terminal of the AC contactor KM2. Terminal block terminal 4K1D8 is connected to terminal block terminal 4K1D7; one end of the trip hold relay contact TBJC-K is connected to terminal block terminal 4Q1D2, and the other end is connected to the input end of the trip hold relay TBJC; the hand trip relay contact STJC-K is connected in parallel across the two ends of the tripping relay contact 13TJF-K; the trip C contact is connected to terminal block terminal 4Q1D5, and the trip C contact is also successively connected in series with the pressure plate terminal 4C1LP3 and terminal block terminal 4C1D10. Terminal block terminal 4C1D11 is respectively connected to terminal block terminal 4C1D10 and the input end of the trip hold relay TBJC.

[0024] Preferably, in the tripping circuit module, the pressure monitoring relay contact 11YJJ-K is taken from the pressure monitoring relay 11YJJ of the pressure input circuit module; the tripping holding relay contacts TBJA-K, TBJB-K, and TBJC-K are respectively taken from the tripping holding relays TBJA, TBJB, and TBJC in the tripping circuit module; and the tripping relay contacts 11TJF-K, 12TJF-K, and 13TJF-K are respectively taken from the tripping relays 11TJF, 12TJF, and 13TJF of the tripping and closing input circuit module.

[0025] Preferably, the circuit of the closing circuit module includes:

[0026] Terminal block terminal 4Q1D2 is connected to the positive end of AC contactor KM2. Terminal block terminal 4Q1D2 is also connected in series with jump relay TWJA, resistor R, resistor R, terminal block terminal 4K1D10, and circuit breaker A phase normally closed auxiliary contact DLA. The other end of circuit breaker A phase normally closed auxiliary contact DLA is connected to the negative end of AC contactor KM2. Terminal block terminal 4Q1D29 is connected to the negative end of AC contactor KM2. The first end of optocoupler OC5 is connected to the output end of jump relay TWJA. The second end of optocoupler OC5 is connected between two resistors R. The third end of optocoupler OC5 is connected to CPU, and the fourth end is grounded. Terminal block terminal 4Q1D6 is connected to the positive end of AC contactor KM2. Terminal block terminal 4Q1D6 is also connected to the positive end of AC contactor KM2. The hand-closing relay contact 1SHJ-1-K, the closing holding relay HBJA, the terminal 4K1D11 of the terminal block, and one end of the closing coil phase A of the circuit breaker are connected in series in sequence, and the other end of the closing coil phase A of the circuit breaker is connected to the negative end of the AC contactor KM2; the two ends of the pressure monitoring relay contact 11YJJ-K are respectively connected to the terminal 4Q1D2 of the terminal block and the terminal 4Q1D6 of the terminal block, and the two ends of the pressure monitoring relay contact 11YJJ-K are also connected in parallel with the pressure monitoring relay contact 11YJJ-K; the two ends of the closing holding relay contact HBJA-K are respectively connected to the terminal 4Q1D2 of the terminal block and the input end of the closing holding relay HBJA, and the reclosing relay contact 1ZHJ-1-K is connected in parallel with the two ends of the hand-closing relay contact 1SHJ-1-K;

[0027] Terminal block terminal 4Q1D2 is also successively connected in series with a tripping position relay TWJB, a resistor R, a resistor R, terminal block terminal 4K1D14, and the normally closed auxiliary contact DLB of the B-phase of the circuit breaker. The other end of the normally closed auxiliary contact DLB of the B-phase of the circuit breaker is connected to the negative terminal of the AC contactor KM2. The first end of the optocoupler OC6 is connected to the output terminal of the tripping position relay TWJB. The second end of the optocoupler OC6 is connected between the two resistors R. The third end of the optocoupler OC6 is connected to the CPU, and the fourth end is grounded; Terminal block terminal 4Q1D6 is also successively connected in series with a manual closing relay contact 1SHJ-2-K, a closing holding relay HBJB, terminal block terminal 4K1D15, and one end of the closing coil of the B-phase of the circuit breaker. The other end of the closing coil of the B-phase of the circuit breaker is connected to the negative terminal of the AC contactor KM2; The two ends of the closing holding relay contact HBJB-K are respectively connected to terminal block terminal 4Q1D2 and the input terminal of the closing holding relay HBJB. The reclosing relay contact 1ZHJ-2-K is connected in parallel across the two ends of the manual closing relay contact 1SHJ-2-K;

[0028] Terminal block terminal 4Q1D2 is also successively connected in series with a tripping position relay TWJC, a resistor R, a resistor R, terminal block terminal 4K1D18, and the normally closed auxiliary contact DLC of the C-phase of the circuit breaker. The other end of the normally closed auxiliary contact DLC of the C-phase of the circuit breaker is connected to the negative terminal of the AC contactor KM2. The first end of the optocoupler OC7 is connected to the output terminal of the tripping position relay TWJC. The second end of the optocoupler OC7 is connected between the two resistors R. The third end of the optocoupler OC7 is connected to the CPU, and the fourth end is grounded; Terminal block terminal 4Q1D6 is also successively connected in series with a manual closing relay contact 2SHJ-1-K, a closing holding relay HBJC, terminal block terminal 4K1D19, and one end of the closing coil of the C-phase of the circuit breaker. The other end of the closing coil of the C-phase of the circuit breaker is connected to the negative terminal of the AC contactor KM2; The two ends of the closing holding relay contact HBJC-K are respectively connected to terminal block terminal 4Q1D2 and the input terminal of the closing holding relay HBJC. The reclosing relay contact 2ZHJ-1-K is connected in parallel across the two ends of the manual closing relay contact 2SHJ-1-K.

[0029] Preferably, in the closing circuit module, the contact 11YJJ-K of the pressure monitoring relay is taken from the pressure monitoring relay 11YJJ of the pressure input circuit module; the contacts HBJA-K, HBJB-K, and HBJC-K of the closing holding relay are taken from the closing holding relays HBJA, HBJB, and HBJC of the closing circuit module respectively; the contacts 1SHJ-1-K and 1SHJ-2-K of the manual closing relay are taken from the manual closing relay 1SHJ of the tripping and closing input circuit module, and the contact 2SHJ-K of the manual closing relay is taken from the manual closing relay 2SHJ of the tripping and closing input circuit module; the contacts 1ZHJ-1-K and 1ZHJ-2-K of the reclosing relay are taken from the reclosing relay 1ZHJ of the tripping and closing input circuit module, and the contact 2ZHJ-K of the reclosing relay is taken from the reclosing relay of the tripping and closing input circuit module.

[0030] Preferably, a debugging interface is further provided on the platform body for debugging the training platform.

[0031] As can be seen from the above technical solutions, the intelligent terminal training platform with loop visualization provided by the embodiment of the present invention includes a platform body, a tripping input circuit module, a pressure input circuit module, a tripping circuit module, and a closing circuit module. Circuit diagrams of each module are drawn on the platform body, and each terminal is led to the corresponding position in the circuit diagram. In this way, the operator can not only perform wiring operations and then conduct training tests on the intelligent terminal based on each module, but also clearly and intuitively see the loop connection relationship, action cooperation relationship, action principle, etc. of each module during the test operation, thereby deepening the understanding of the trainee on the test of the intelligent terminal operation loop and improving the training effect. In addition, an indication module is further provided on the platform body, which can display the current operation state of the training platform, so that the training personnel can know the current operation being performed and the current state of the training platform. At the same time, there is also a clearer display of the effect generated after the cooperation of the operations, further deepening the understanding of the training personnel on the intelligent terminal training test, and thus greatly improving the training effect. Description of the Drawings

[0032] Figure 1 It is a front view of an intelligent terminal training platform with loop visualization provided by the embodiment of the present invention.

[0033] Figure 2 It is a side view of an intelligent terminal training platform with loop visualization provided by the embodiment of the present invention.

[0034] Figure 3 It is a circuit diagram of a tripping and closing input circuit module provided by the embodiment of the present invention.

[0035] Figure 4The circuit diagram of a pressure input circuit module provided by an embodiment of the present utility model.

[0036] Figure 5 The circuit diagram of a tripping circuit module provided by an embodiment of the present utility model.

[0037] Figure 6 The circuit diagram of a closing circuit module provided by an embodiment of the present utility model.

[0038] In the figure: platform body 10, tripping and closing input circuit module 20, pressure input circuit module 30, tripping circuit module 40, closing circuit module 50, indication module 60, debugging interface 70. Detailed implementation manners

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts.

[0040] As Figure 1-2 shown, the present utility model provides an intelligent terminal training platform with circuit visualization. The training platform includes: a platform body 10, inside which a tripping and closing input circuit module 20, a pressure input circuit module 30, a tripping circuit module 40, and a closing circuit module 50 are provided; circuit diagrams of each module are drawn on the platform body 10, and at least terminal block terminals, handle terminals, pressure plate terminals, and five-prevention interlocking terminals are led out from inside the platform body 10 to corresponding positions of the circuit diagrams; the tripping and closing input circuit module 20, the tripping circuit module 40, and the closing circuit module 50 are used for training protection tripping and closing operations, and the pressure input circuit module 30 is used to cooperate with the tripping and closing input circuit module 20, the tripping circuit module 40, and the closing circuit module 50 for training protection tripping and closing operations with pressure; an indication module 60 is further provided on the platform body 10, and the indication module 60 is used to display the current operation state of the training platform.

[0041] In this embodiment, the operator can not only perform wiring operations, and then conduct training tests on the smart terminal based on each module, but also can clearly and intuitively see the circuit connection relationship, action coordination relationship and action principle of each module during the test operation, thereby deepening the trainees' understanding of the smart terminal operation circuit test and improving the training effect. For example, the terminal block terminals, handle terminals, pressure plate terminals, five-protection locking terminals, etc. are led to the corresponding positions on the circuit diagram and made into jacks. The connections between the terminals are completed by the trainees according to the drawings. Compared with the traditional training method of the smart terminal group screen, the schematic diagram is directly designed on the test platform, which is convenient for trainees to understand and master the principles of the operating circuit, and have a clearer understanding of the contacts, relays, pressure plates and other components in the circuit. Trainees can practice wiring by themselves, which helps to understand the circuit function, troubleshoot circuit problems, improve the maintenance and defect handling level of the smart terminal, and reduce the risk of on-site smart terminal operation.

[0042] In addition, an indicator module 60 is also provided on the platform body 10, which can display the current operation status of the training platform, so that the trainees can know the currently executed operation and the current status of the training platform. At the same time, there is a clearer display of the effect produced by the coordination between the operations, which further deepens the trainees' understanding of the intelligent terminal training test and greatly improves the training effect. For example, the platform can be configured with a power indicator light, a reclosing indicator light, a trip A indicator light, a trip B indicator light, a trip C indicator light, an A phase closing position indicator light, a B phase closing position indicator light, a C phase closing position indicator light, etc.

[0043] In addition, the platform body 10 is also provided with a debugging interface 70 for debugging the training platform.

[0044] See also Figures 3-6 , which are circuit diagrams of the tripping and closing input circuit module 20, the pressure input circuit module 30, the tripping circuit module 40 and the closing circuit module 50 respectively.

[0045] The following is an explanation of this scheme in conjunction with a specific protection test example:

[0046] 1. Take protection clause A as an example (the same applies to clauses B and C)

[0047] (1) Without pressure circuit

[0048] like Figure 5 The circuit diagram of the trip circuit module 4040 shown in FIG. Figure 6The circuit diagram of the closing loop module 5050 as shown. The terminal 4Q1D2 of the terminal block is shorted to the terminal 4Q1D5 of the terminal block, bypassing the pressure loop. The terminal 4K1D2 of the terminal block is connected to the analog circuit breaker. The closing plate terminal 4C1LP1 is inserted, the trip A contact is closed, or the test wire shorts the contacts 417 and 418 at both ends of the trip A contact. The trip hold relay TBJA is started, and the normally open contact TBJA-K of the trip hold relay is closed, forming a self-holding loop to complete the phase A trip. After phase A trips open, the normally open contact DLA of the circuit breaker opens, and the trip hold relay TBJA returns, and the contact TBJA-K of the trip hold relay opens. As Figure 5 , at the same time, the normally closed contact DLA is closed, and the trip position relay TWJA operates.

[0049] (2)With pressure loop

[0050] As Figure 5 shown, the terminal 4Q1D2 of the terminal block is disconnected from the terminal 4Q1D5 of the terminal block. The positive power of the terminal 4Q1D2 of the terminal block needs to be connected to the terminal 4Q1D5 of the terminal block through the contact 11YJJ-K of the pressure monitoring relay.

[0051] 1) When the pressure low blocking trip contact between the terminal 4Q1D23 and the terminal 4Q1D29 of the terminal block is open, the pressure monitoring relay 11YJJ can operate, the normally open contact of the contact 11YJJ-K of the pressure monitoring relay is closed, the terminal 4Q1D2 of the terminal block is conducted to the terminal 4Q1D5 of the terminal block, and the protection can normally trip phase A. When the pressure low blocking trip contact between the terminal 4Q1D23 and the terminal 4Q1D29 of the terminal block is closed, the positive power bypasses the pressure monitoring relay 11YJJ through the terminal 4Q1D23 of the terminal block, the pressure monitoring relay 11YJJ cannot operate, the normally open contact of the contact 11YJJ-K of the pressure monitoring relay is open, the terminal 4Q1D2 of the terminal block is not conducted to the terminal 4Q1D5 of the terminal block, and the protection cannot trip phase A.

[0052] 2) When the pressure prohibited operation contact between the terminal 4Q1D4 and the terminal 4Q1D25 of the terminal block is closed, the pressure monitoring relay 4YJJ operates, the normally open contact of the contact 4YJJ-K of the pressure monitoring relay is closed, the positive power bypasses the pressure monitoring relay 11YJJ through the normally closed contact of the contact 4YJJ-K of the pressure monitoring relay, the pressure monitoring relay 11YJJ cannot operate, the normally open contact of the contact 11YJJ-K of the pressure monitoring relay is open, the terminal 4Q1D2 of the terminal block is not conducted to the terminal 4Q1D5 of the terminal block, and the protection cannot trip phase A either.

[0053] 2. Take the protection closing phase A as an example (the same principle applies to phases B and C)

[0054] (1)Without pressure loop

[0055] AsFigure 3 , 5 As shown in Figure 6, the terminal 4Q1D2 of the terminal block is short-circuited with the terminal 4Q1D6 of the terminal block, bypassing the pressure circuit. The terminal 4K1D11 of the terminal block is connected to the analog circuit breaker, the input pressure plate terminal 4C1LP4 is closed, the closing contact A is closed, or the test wire shorts the contacts 423 and 424 at both ends of the closing contact A. The reclosing relays 1ZHJ and 2ZHJ are started. The contact 1ZHJ-1-K of the reclosing relay is closed, the normally open contact of the starting closing holding relay contact HBJA-K is closed, forming a self-holding circuit, completing the closing of phase A. After phase A is closed, the normally closed contact DLA of the circuit breaker opens, the closing holding relay HBJA returns, and the contact HBJA-K of the closing holding relay opens. At the same time, the normally open contact DLA of the circuit breaker is closed, and the closing position relay HWJA operates.

[0056] (2) With pressure circuit

[0057] The terminal 4Q1D2 of the terminal block is disconnected from the terminal 4Q1D6 of the terminal block, and the positive power of 4Q1D2 needs to be connected to the terminal 4Q1D6 of the terminal block through the contact 11YJJ-K of the pressure monitoring relay;

[0058] 1) When the pressure low blocking trip contact between the terminal 4Q1D23 and the terminal 4Q1D29 of the terminal block is open, the pressure monitoring relay 11YJJ can operate, the normally open contact of the pressure monitoring relay node 11YJJ is closed, the terminal 4Q1D2 of the terminal block is conducted with the terminal 4Q1D6 of the terminal block, and the protection can normally close phase A. When the pressure low blocking trip contact between the terminal 4Q1D23 and the terminal 4Q1D29 of the terminal block is closed, the positive power bypasses the pressure monitoring relay 11YJJ through the terminal 4Q1D23 of the terminal block, the pressure monitoring relay 11YJJ cannot operate, the normally open contact of the pressure monitoring relay contact 11YJJ-K is open, the terminal 4Q1D2 of the terminal block is not conducted with the terminal 4Q1D6 of the terminal block, and the protection cannot trip phase A.

[0059] 2) When the pressure prohibited operation contact between the terminal 4Q1D4 and the terminal 4Q1D25 of the terminal block is closed, the pressure monitoring relay 4YJJ operates, the normally open contact of the pressure monitoring relay contact 4YJJ-K is closed, the positive power bypasses the pressure monitoring relay 11YJJ through the normally closed contact of the pressure monitoring relay contact 4YJJ-K, the pressure monitoring relay 11YJJ cannot operate, the normally open contact of the pressure monitoring relay 11YJJ is open, the terminal 4Q1D2 of the terminal block is not conducted with the terminal 4Q1D6 of the terminal block, and the protection cannot close phase A either.

[0060] Among them, the closing coils of the circuit breaker are HQA, HQB, and HQC respectively, and the tripping coils of the circuit breaker are TQA, TQB, and TQC respectively. The tripping relay and the tripping relay contact TJF have the functions of not being able to start the reclosing and not being able to start the malfunction.

[0061] It should be noted that the operations of other circuits are similar. The circled symbols with numbers marked in the figure are also contacts, and the operator can perform wiring operations.

[0062] In addition, the relays, relay contacts, etc. in the figure can be made dynamic to display the operation conditions of the relays and the contact operation conditions in real time, so as to realize the further visualization of the operation circuit and further deepen the understanding of the operation circuit by the trainees.

[0063] The modules or units in the device of the embodiment of the present utility model can be combined, divided, and deleted according to actual needs. The above-disclosed is only the preferred embodiment of the present utility model, and of course, it cannot be used to limit the scope of rights of the present utility model. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. An intelligent terminal training platform for loop visualization, characterized in that The training platform includes: a platform body, in which a trip and close input circuit module, a pressure input circuit module, a trip circuit module and a close circuit module are arranged; circuit diagrams of each module are drawn on the platform body, and at least terminal block terminals, handle terminals, pressure plate terminals, and five-prevention interlock terminals are led out from the inside of the platform body to corresponding positions of the circuit diagrams; the trip and close input circuit module, the trip circuit module and the close circuit module are used for protection trip and close operation training, and the pressure input circuit module is used to cooperate with the trip and close input circuit module, the trip circuit module and the close circuit module for protection trip and close operation training with pressure; an indication module is further arranged on the platform body, and this indication module is used to display the current operation state of the training platform.

2. The intelligent terminal training platform for loop visualization according to claim 1, characterized in that The circuit of the trip and close input circuit module includes: The positive end of AC contactor KM2 is connected to one end of terminal block terminal 4Q1D2, the other end of terminal block terminal 4Q1D2 is connected to one end of pressure monitoring relay contact 11YJJ-K, the other end of pressure monitoring relay contact 11YJJ-K is connected to one end of terminal block terminal 4Q1D6, and the other end of terminal block terminal 4Q1D6 is connected to the positive end of the AC contactor; Two pressure monitoring relay contacts 11YJJ-K are arranged in parallel, Terminal block terminal 4C1D14 is respectively connected to terminal block terminal 4Q1D6 and terminal block terminal 4C1D15, terminal block terminal 4C1D14 is also connected to one end of pressure plate terminal 4C1LP4, the other end of pressure plate terminal 4C1LP4 is connected to one end of reclosing outlet contact 4H, and the other end of reclosing outlet contact 4H is successively connected in series with terminal block terminal 4C1D19, reclosing relay 1ZHJ, reclosing relay 2ZHJ and resistor R and then connected to one end of terminal block terminal 4Q1D29, and the other end of terminal block terminal 4Q1D29 is connected to the negative end of AC contactor KM2; Among them, in reclosing outlet contact 4H, the two ends of the closing A contact are respectively connected to pressure plate terminal 4C1LP4 and terminal block terminal 4C1D18, and terminal block terminal 4C1D18 is connected to terminal block terminal 4C1D19; the two ends of the closing B contact are respectively connected to pressure plate terminal 4C1LP4 and terminal block terminal 4C1D21, and terminal block terminal 4C1D21 is connected to terminal block terminal 4C1D18; the two ends of the closing C contact are respectively connected to pressure plate terminal 4C1LP4 and terminal block terminal 4C1D24, and terminal block terminal 4C1D24 is connected to terminal block terminal 4C1D21; Terminal block terminal 4C2D1 is respectively connected to the positive terminal of AC contactor KM2, terminal block terminal 4C2D2, and one end of the remote control of switching handle 4QK. The other end of terminal block terminal 4C2D2 is connected to one end of five-prevention interlocking contact 4BS. The other end of five-prevention interlocking contact 4BS is connected to terminal block terminal 4C2D4. Terminal block terminal 4C2D4 is respectively connected to one end of the synchronous manual closing and forced manual closing of switching handle 4QK; the other end of the synchronous manual closing of switching handle 4QK is connected to terminal block terminal 4C2D12, and terminal block terminal 4C2D12 is also connected to terminal block terminal 4C2D13; the other end of the remote control of switching handle 4QK is connected to terminal block terminal 4C2D6, and terminal block terminal 4C2D6 is also connected to one end of pressure plate terminal 4C1LP8. The other end of pressure plate terminal 4C1LP8 is connected to terminal block terminal 4C2D13. Terminal block terminal 4C2D13 is also successively connected in series with remote trip / remote close outlet contact CJ08, terminal block terminal 4C2D10, terminal block terminal 4Q1D11, pressure monitoring relay contact 3YJJ-K, manual closing relay 1SHJ, manual closing relay 2SHJ, resistor R and then connected to terminal block terminal 4Q1D29; The other end of the forced manual operation of switching handle 4QK is respectively connected to one end of the manual closing and manual tripping of operating handle 4KK. The other end of the manual closing of operating handle 4KK is connected to terminal block terminal 4Q1D12. The other end of terminal block terminal 4Q1D12 is connected in series with pressure monitoring relay contact 21YJJ-K and then connected between pressure monitoring relay contact 3YJJ-K and manual closing relay 1SHJ; Terminal block terminal 4C2D6 is also successively connected in series with pressure plate terminal 4C1LP7, remote trip / remote close outlet contact CJ07, terminal block terminal 4C2D9, terminal block terminal 4Q1D14, manual tripping relay STJA, manual tripping relay STJB, manual tripping relay STJC, resistor R and then connected to terminal block terminal 4Q1D29; Terminal block terminal 4Q1D14 is also connected to terminal block terminal 4Q1D15, and terminal block terminal 4Q1D15 is also connected to the other end of the manual tripping of operating handle 4KK; One end of closing-after relay HHJ is connected between terminal block terminal 4Q1D11 and pressure monitoring relay contact 3YJJ-K, and the other end is connected in series with resistor R and then connected to terminal block terminal 4Q1D29; One end of the closing-after relay is also connected between terminal block terminal 4Q1D14 and manual tripping relay STJA, and the other end is connected in series with resistor R and then connected to terminal block terminal 4Q1D29; One end of the terminal block terminal 4C1D1 is connected to the positive terminal of the AC contactor KM2, and the other end is connected to the terminal block terminal 4Q1D29 after being connected in series with the photodiode D1, the trip relay 11TJF, the trip relay 12TJF, the trip relay 13TJF, and the resistor R; the positive electrode of the photodiode D1 is connected in parallel with the photodiode D2, the negative electrode of the photodiode D2 is connected to the first end of the optocoupler OC1, the second end of the optocoupler OC1 is connected to the terminal block terminal 4Q1D29, the third end of the optocoupler OC1 is connected to the chip CPU, and the fourth end of the optocoupler OC1 is grounded.

3. The intelligent terminal training platform for loop visualization according to claim 2, characterized in that, In the trip and close input circuit, the pressure monitoring relay contacts 11YJJ-K, 3YJJ-K, and 21YJJ-K are respectively taken from the pressure monitoring relays 11YJJ, 3YJJ, and 21YJJ in the pressure input circuit module.

4. The intelligent terminal training platform for loop visualization according to claim 1, characterized in that The circuit of the pressure input circuit module includes: The terminal block terminal 4Q1D2 is connected to the positive terminal of the AC contactor KM2; one end of the terminal block terminal 4Q1D4 is connected to the positive terminal of the AC contactor KM2, and the other end is connected to the terminal block terminal 4Q1D29 after being connected in series with the terminal block terminal 4Q1D17, the resistor R, the pressure monitoring relay 21YJJ, and the resistor R in sequence. The terminal block terminal 4Q1D29 is also connected to the negative terminal of the AC contactor KM2; one end of the terminal block terminal 4Q1D21 is connected to the input terminal of the pressure monitoring relay 21YJJ, and the other end is connected to the negative terminal of the AC contactor KM2; The terminal block terminal 4Q1D18 is connected to the terminal block terminal 4Q1D17, and the terminal block terminal 4Q1D18 is also connected to the terminal block terminal 4Q1D29 after being connected in series with the resistor R, the pressure monitoring relay 3YJJ, and the resistor R in sequence; one end of the terminal block terminal 4Q1D22 is connected to the input terminal of the pressure monitoring relay 3YJJ, and the other end is connected to the negative terminal of the AC contactor KM2; The terminal block terminal 4Q1D19 is connected to the terminal block terminal 4Q1D18, and the terminal block terminal 4Q1D19 is also connected to the terminal block terminal 4Q1D29 after being connected in series with the resistor R, the pressure monitoring relay 11YJJ, and the resistor R in sequence; one end of the terminal block terminal 4Q1D23 is connected to the input terminal of the pressure monitoring relay 11YJJ, and the other end is connected to the negative terminal of the AC contactor KM2; the pressure monitoring relay contact 4YJJ-K is connected in parallel with the pressure monitoring relay 11YJJ; The terminal block terminal 4Q1D25 is connected to the positive terminal of the AC contactor KM2, and the terminal block terminal 4Q1D25 is also connected to the terminal block terminal 4Q1D29 after being connected in series with the resistor R, the pressure monitoring relay 4YJJ, and the resistor R in sequence; the terminal block terminal 4Q1D26 is connected to the input terminal of the pressure monitoring relay 4YJJ.

5. The intelligent terminal training platform for loop visualization according to claim 4, wherein In the pressure input circuit module, the pressure monitoring relay contact 4YJJ-K is in the pressure input circuit module of the pressure monitoring relay 4YJJ.

6. The intelligent terminal training platform for loop visualization according to claim 1, characterized in that, The circuit of the trip circuit module includes: The terminal 4Q1D2 of the terminal block is connected to the positive terminal of the AC contactor KM2. The terminal 4Q1D2 of the terminal block is also sequentially connected in series with the closing relay HWJA, resistor R, resistor R, and the terminal 4K1D1 of the terminal block. The first terminal of the optocoupler OC2 is connected to the output terminal of the closing relay HWJA. The second terminal of the optocoupler OC2 is connected between the two resistors R. The third terminal of the optocoupler OC2 is connected to the CPU, and the fourth terminal is grounded. The terminal 4Q1D5 of the terminal block is connected to the positive terminal of the AC contactor KM2. The terminal 4Q1D5 of the terminal block is also sequentially connected in series with the trip relay contact 11TJF-K, the trip hold relay TBJA, the terminal 4K1D2 of the terminal block, and one end of the phase A of the circuit breaker trip coil. The other end of the phase A of the circuit breaker trip coil is connected to the negative terminal of the AC contactor KM2. The terminal 4K1D2 of the terminal block is connected to the terminal 4K1D1 of the terminal block. One end of the trip hold relay contact TBJA-K is connected to the terminal 4Q1D2 of the terminal block, and the other end is connected to the input terminal of the trip hold relay TBJA. The manual trip relay contact STJA-K is connected in parallel across the two ends of the trip relay contact 11TJF-K. The two ends of the pressure monitoring relay contact 11YJJ-K are respectively connected to the terminal 4Q1D5 and the terminal 4Q1D2 of the terminal block. The pressure monitoring relay contact 11YJJ-K is also connected in parallel across its own two ends. The trip A contact is connected to the terminal 4Q1D5 of the terminal block. The trip A contact is also sequentially connected in series with the pressure plate terminal 4C1LP1 and the terminal 4C1D4 of the terminal block. The terminal 4C1D5 is respectively connected to the terminal 4C1D4 and the input terminal of the trip hold relay TBJA. The terminal 4Q1D29 of the terminal block is connected to the negative terminal of the AC contactor KM2. The terminal 4Q1D2 of the terminal block is also sequentially connected in series with the closing relay HWJB, resistor R, resistor R, and the terminal 4K1D4 of the terminal block. The first terminal of the optocoupler OC3 is connected to the output terminal of the closing relay HWJB. The second terminal of the optocoupler OC3 is connected between the two resistors R. The third terminal of the optocoupler OC3 is connected to the CPU, and the fourth terminal is grounded. The terminal 4Q1D5 of the terminal block is also sequentially connected in series with the trip relay contact 12TJF-K, the trip hold relay TBJB, the terminal 4K1D5 of the terminal block, and one end of the phase B of the circuit breaker trip coil. The other end of the phase B of the circuit breaker trip coil is connected to the negative terminal of the AC contactor KM2. The terminal 4K1D5 of the terminal block is connected to the terminal 4K1D4 of the terminal block. One end of the trip hold relay contact TBJB-K is connected to the terminal 4Q1D2 of the terminal block, and the other end is connected to the input terminal of the trip hold relay TBJB. The manual trip relay contact STJB-K is connected in parallel across the two ends of the trip relay contact 12TJF-K. The trip B contact is connected to the terminal 4Q1D5 of the terminal block. The trip B contact is also sequentially connected in series with the pressure plate terminal 4C1LP2 and the terminal 4C1D7 of the terminal block. The terminal 4C1D8 is respectively connected to the terminal 4C1D7 and the input terminal of the trip hold relay TBJB. Terminal block terminal 4Q1D2 is also successively connected in series with a closing relay HWJC, a resistor R, a resistor R, and terminal block terminal 4K1D7; the first end of the optocoupler OC4 is connected to the output end of the closing relay HWJC, the second end of the optocoupler OC4 is connected between the two resistors R, the third end of the optocoupler OC4 is connected to the CPU, and the fourth end is grounded; terminal block terminal 4Q1D5 is also successively connected in series with the tripping relay contact 13TJF-K, the trip hold relay TBJC, terminal block terminal 4K1D8, and one end of the phase C of the circuit breaker tripping coil. The other end of the phase C of the circuit breaker tripping coil is connected to the negative terminal of the AC contactor KM2. Terminal block terminal 4K1D8 is connected to terminal block terminal 4K1D7; one end of the trip hold relay contact TBJC-K is connected to terminal block terminal 4Q1D2, and the other end is connected to the input end of the trip hold relay TBJC; the manual trip relay contact STJC-K is connected in parallel across the two ends of the tripping relay contact 13TJF-K; the trip C contact is connected to terminal block terminal 4Q1D5. The trip C contact is also successively connected in series with the pressure plate terminal 4C1LP3 and terminal block terminal 4C1D10. Terminal block terminal 4C1D11 is respectively connected to terminal block terminal 4C1D10 and the input end of the trip hold relay TBJC.

7. The intelligent terminal training platform for loop visualization according to claim 6, characterized in that In the tripping circuit module, the pressure monitoring relay contact 11YJJ-K is taken from the pressure monitoring relay 11YJJ of the pressure input circuit module; the trip hold relay contacts TBJA-K, TBJB-K, and TBJC-K are respectively taken from the trip hold relays TBJA, TBJB, and TBJC in the tripping circuit module; the tripping relay contacts 11TJF-K, 12TJF-K, and 13TJF-K are respectively taken from the tripping relays 11TJF, 12TJF, and 13TJF of the trip and close input circuit module.

8. The intelligent terminal training platform for loop visualization according to claim 1, characterized in that The circuit of the closing circuit module includes: Terminal block terminal 4Q1D2 is connected to the positive terminal of AC contactor KM2. Terminal block terminal 4Q1D2 also sequentially connects in series with trip position relay TWJA, resistor R, resistor R, terminal block terminal 4K1D10, normally closed auxiliary contact DLA of breaker phase A. The other end of normally closed auxiliary contact DLA of breaker phase A is connected to the negative terminal of AC contactor KM2. Terminal block terminal 4Q1D29 is connected to the negative terminal of AC contactor KM2. The first end of optocoupler OC5 is connected to the output terminal of trip position relay TWJA. The second end of optocoupler OC5 is connected between two resistors R. The third end of optocoupler OC5 is connected to the CPU, and the fourth end is grounded. Terminal block terminal 4Q1D6 is connected to the positive terminal of AC contactor KM2. Terminal block terminal 4Q1D6 also sequentially connects in series with manual closing relay contact 1SHJ-1-K, closing holding relay HBJA, terminal block terminal 4K1D11, one end of breaker closing coil phase A. The other end of breaker closing coil phase A is connected to the negative terminal of AC contactor KM2. The two ends of pressure monitoring relay contact 11YJJ-K are respectively connected to terminal block terminal 4Q1D2 and terminal block terminal 4Q1D6. Pressure monitoring relay contact 11YJJ-K is also connected in parallel at both ends. The two ends of closing holding relay contact HBJA-K are respectively connected to terminal block terminal 4Q1D2 and the input terminal of closing holding relay HBJA. Reclosing relay contact 1ZHJ-1-K is connected in parallel at both ends of manual closing relay contact 1SHJ-1-K. Terminal block terminal 4Q1D2 also sequentially connects in series with trip position relay TWJB, resistor R, resistor R, terminal block terminal 4K1D14, normally closed auxiliary contact DLB of breaker phase B. The other end of normally closed auxiliary contact DLB of breaker phase B is connected to the negative terminal of AC contactor KM2. The first end of optocoupler OC6 is connected to the output terminal of trip position relay TWJB. The second end of optocoupler OC6 is connected between two resistors R. The third end of optocoupler OC6 is connected to the CPU, and the fourth end is grounded. Terminal block terminal 4Q1D6 also sequentially connects in series with manual closing relay contact 1SHJ-2-K, closing holding relay HBJB, terminal block terminal 4K1D15, one end of breaker closing coil phase B. The other end of breaker closing coil phase B is connected to the negative terminal of AC contactor KM2. The two ends of closing holding relay contact HBJB-K are respectively connected to terminal block terminal 4Q1D2 and the input terminal of closing holding relay HBJB. Reclosing relay contact 1ZHJ-2-K is connected in parallel at both ends of manual closing relay contact 1SHJ-2-K. Terminal block terminal 4Q1D2 is also successively connected in series with a tripping position relay TWJC, a resistor R, a resistor R, terminal block terminal 4K1D18, and the normally closed auxiliary contact DLC of the C-phase of the circuit breaker. The other end of the normally closed auxiliary contact DLC of the C-phase of the circuit breaker is connected to the negative terminal of the AC contactor KM2. The first end of the optocoupler OC7 is connected to the output terminal of the tripping position relay TWJC. The second end of the optocoupler OC7 is connected between the two resistors R. The third end of the optocoupler OC7 is connected to the CPU, and the fourth end is grounded. Terminal block terminal 4Q1D6 is also successively connected in series with the hand-closing relay contact 2SHJ-1-K, the closing holding relay HBJC, terminal block terminal 4K1D19, and one end of the C-phase of the closing coil of the circuit breaker. The other end of the C-phase of the closing coil of the circuit breaker is connected to the negative terminal of the AC contactor KM2. The two ends of the closing holding relay contact HBJC-K are respectively connected to terminal block terminal 4Q1D2 and the input terminal of the closing holding relay HBJC. The reclosing relay contact 2ZHJ-1-K is connected in parallel with the two ends of the hand-closing relay contact 2SHJ-1-K.

9. The intelligent terminal training platform for loop visualization according to claim 8, characterized in that, In the closing circuit module, the pressure monitoring relay contact 11YJJ-K is taken from the pressure monitoring relay 11YJJ of the pressure input circuit module; the closing holding relay contacts HBJA-K, HBJB-K, and HBJC-K are respectively taken from the closing holding relays HBJA, HBJB, and HBJC of the closing circuit module; the hand-closing relay contacts 1SHJ-1-K and 1SHJ-2-K are taken from the hand-closing relay 1SHJ of the tripping and closing input circuit module, and the hand-closing relay contact 2SHJ-K is taken from the hand-closing relay 2SHJ of the tripping and closing input circuit module; the reclosing relay contacts 1ZHJ-1-K and 1ZHJ-2-K are taken from the reclosing relay 1ZHJ of the tripping and closing input circuit module, and the reclosing relay contact 2ZHJ-K is taken from the reclosing relay of the tripping and closing input circuit module.

10. The intelligent terminal training platform for loop visualization according to any one of claims 1-9, characterized in that, A debugging interface is also provided on the platform body for debugging the training platform.

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