Circuit breaker protection system for preventing non-full-phase operation of generator

Abstract

The utility model discloses a circuit breaker protection system for preventing the non-full-phase operation of a generator, which comprises a non-full-phase discrimination protection loop, the input end of the non-full-phase discrimination protection loop is connected with the positive electrode of a power supply, and the output end of the non-full-phase discrimination protection loop is connected with the input end of a protection switching function module. The input end of the protection switching function module is connected with the output end of the protection alarm and fault maintenance function module, the input end of the protection alarm and fault maintenance function module is connected with the positive electrode of a power supply, and the protection switching function module is connected with the protection exit action module in parallel. According to the utility model, non-full-phase discrimination and non-full-phase protection alarm can be carried out, a protection switching function is started, and exit action protection, fault maintenance and fault reset functions are carried out.

Description

Technical Field

[0001] The utility model belongs to the technical field of relay protection of electric power systems, and in particular relates to a circuit breaker protection system for preventing a generator from operating in non-full-phase mode. Background Art

[0002] For large power plants, when the three-phase split-phase circuit breaker is closed or opened or the protection action trips, the generator is in a non-full-phase operation state due to the refusal of one or two phases of the circuit breaker to operate, thereby generating a negative sequence current that is more harmful to the generator. At present, due to design reasons, some old power plants use line protection or circuit breaker protection "three-phase inconsistency protection" action to remove faults when the three-phase split-phase circuit breaker is not in full-phase operation, and do not use the three-phase inconsistency protection of the circuit breaker body. Does not meet the requirements of the regulations: For the three-phase inconsistency of 220kV~500kV circuit breakers, the three-phase inconsistency protection of the circuit breaker body should be used as much as possible. The "generator non-full-phase protection or circuit breaker inconsistency protection" originally designed by some power plants did not adopt the "circuit breaker body" method, and some existing circuits with three-phase inconsistency protection function of the circuit breaker body cannot hold and indicate faults. Therefore, it is necessary to design a circuit that implements three-phase inconsistency protection and holds and indicates faults by the circuit breaker body. Utility Model Content

[0003] The utility model aims to provide a circuit breaker protection system for preventing a generator from operating in non-full-phase mode, solving the problem that the three-phase inconsistent protection circuit of the existing power plant generator 220kV-500kV circuit breaker cannot perform fault holding and indication.

[0004] The technical scheme adopted by the utility model is a circuit breaker protection system for preventing a generator from operating in non-full-phase mode, comprising a non-full-phase discrimination module, wherein an input end of the non-full-phase discrimination module is connected to a positive pole of a power supply, an output end of the non-full-phase discrimination module is connected to an input end of a protection throw-in / out function module, an output end of the protection throw-in / out function module is connected to a negative pole of a power supply, an input end of the protection throw-in / out function module is connected to an output end of a protection alarm and fault holding function module, an input end of the protection alarm and fault holding function module is connected to a positive pole of a power supply, a positive pole of a power supply is connected to a protection output action module, and the other end of the protection output action module is connected to a negative pole of a power supply; the non-full-phase discrimination module comprises a normally open contact of a three-phase circuit breaker body, the normally open contact of the three-phase circuit breaker body is connected in series with a normally closed contact of the three-phase circuit breaker body, an input end of the normally closed contact of the three-phase circuit breaker body is connected to a positive pole of a power supply, and an output end of the normally open contact of the three-phase circuit breaker body is connected in series with a time relay.

[0005] The utility model is also characterized in that:

[0006] The normally open contacts of the three-phase circuit breaker body include the normally open contacts of the A-phase circuit breaker body, the normally open contacts of the A-phase circuit breaker body are connected in parallel with the normally open contacts of the B-phase circuit breaker body and the normally open contacts of the C-phase circuit breaker body; the normally closed contacts of the three-phase circuit breaker body include the normally closed contacts of the A-phase circuit breaker body, the normally closed contacts of the A-phase circuit breaker body are connected in parallel with the normally closed contacts of the B-phase circuit breaker body and the normally closed contacts of the C-phase circuit breaker body.

[0007] The protection throwing and withdrawing function module includes a time relay, the input end of the time relay is connected to the normally open contact of the three-phase circuit breaker body, the output end of the time relay is connected to the input end of the protection throwing and withdrawing pressure plate, the input end of the protection throwing and withdrawing pressure plate is connected to the protection alarm and fault holding function module, and the output end of the protection throwing and withdrawing pressure plate is connected to the negative pole of the power supply.

[0008] The protection alarm and fault holding function module includes a time relay delayed closing contact, the input end of the time relay delayed closing contact is connected to the positive pole of the power supply, the output end of the time relay delayed closing contact is connected to the export relay, the output end of the export relay is connected to the protection throw-in / out pressure plate, the time relay delayed closing contact is connected in parallel with the fault holding module and the alarm function module; the fault holding module includes a reset button, the input end of the reset button is connected to the positive pole of the power supply, the output end of the reset button is connected to the first export relay contact, the output end of the first export relay contact is connected to the export relay, the alarm function module includes an indicator light, the input end of the indicator light is connected to the positive pole of the power supply, the output end of the indicator light is connected to the second export relay contact, and the output end of the second export relay contact is connected to the protection throw-in / out pressure plate.

[0009] The protection output action module includes an output relay normally open contact, the input end of the output relay normally open contact is connected to the positive pole of the power supply, the output end of the output relay normally open contact is connected in series with the three-phase tripping coil of the circuit breaker, and the output end of the three-phase tripping coil of the circuit breaker is connected to the negative pole of the power supply; the output relay normally open contact includes a first-phase output relay normally open contact, the first-phase output relay normally open contact is connected in parallel with the second-phase output relay normally open contact and the third-phase output relay normally open contact, the output end of the first-phase output relay normally open contact is connected to the A-phase tripping coil of the three-phase tripping coil of the circuit breaker, the output end of the second-phase output relay normally open contact is connected to the B-phase tripping coil of the three-phase tripping coil of the circuit breaker, and the output end of the third-phase output relay normally open contact is connected to the C-phase tripping coil of the three-phase tripping coil of the circuit breaker.

[0010] The beneficial effects of the utility model are:

[0011] 1. The utility model prevents the generator from operating in non-full-phase mode by means of a circuit breaker protection system, which is composed of a positive pole of a power supply connected to a reset button connected to a first output relay contact connected to an output relay connected to a protection throw-in / out pressure plate connected to a negative pole of the power supply to form a fault holding circuit. When the generator is operating in non-full-phase mode, the utility model prevents the generator from operating in non-full-phase mode by means of a circuit breaker protection system, which is composed of actuating an output to realize tripping of a three-phase circuit breaker, so that the generator can be separated from non-full-phase mode as soon as possible, thereby reducing the damage to the generator caused by non-full-phase mode. The output relay coil in the fault holding circuit is energized, so that the first output relay contact is closed, and the output relay is self-holding through the fault holding circuit, so that the fault signal can be held until manually reset, thereby preventing accidents caused by closing the circuit breaker with a fault.

[0012] 2. The circuit breaker protection system of the utility model for preventing the generator from operating in non-full-phase mode can allow the operator to confirm the cause and signal of the protection action by setting an indicator light, and has the function of fault indication.

[0013] 3. The circuit breaker protection system of the utility model for preventing the generator from operating in non-full-phase mode is provided with a reset button. Pressing the reset button has the function of disconnecting the self-holding circuit and resetting the indicator light. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the general circuit diagram of the circuit breaker protection system for preventing the generator from operating in non-full-phase mode according to the utility model;

[0015] Figure 2 It is a circuit diagram of a non-full-phase discrimination module of a circuit breaker protection system for preventing a generator from operating in non-full-phase mode according to the utility model;

[0016] Figure 3 It is a circuit diagram of a protection throw-in / out function module of a circuit breaker protection system for preventing a generator from operating in non-full-phase mode according to the utility model;

[0017] Figure 4 It is a circuit diagram of the protection alarm and fault holding function module of the circuit breaker protection system for preventing the generator from non-full-phase operation of the utility model;

[0018] Figure 5 The utility model is a circuit diagram of a protection outlet action module of a circuit breaker protection system for preventing a generator from operating in non-full-phase mode.

[0019] In the figure, 1. non-full-phase discrimination module, 2. protection throw-in / out function module, 3. protection alarm and fault holding function module, 4. protection output action module, 5. protection throw-in / out pressure plate, 6. output relay, 7. time relay delayed closing contact, 8. first output relay contact, 9. reset button, 10. time relay, 11. second output relay contact, 12. indicator light, 13. output relay normally open contact, 14. three-phase circuit breaker body normally open contact, 15. three-phase circuit breaker body normally closed contact, 16. circuit breaker three-phase tripping coil, 17. first phase output relay normally open contact, 18. second phase output relay normally open contact, 19. third phase output relay normally open contact. DETAILED DESCRIPTION

[0020] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0021] like Figure 1 As shown, the utility model prevents the circuit breaker protection system of the generator from non-full-phase operation, including a non-full-phase discrimination module 1, the input end of the non-full-phase discrimination module 1 is connected to the positive pole of the power supply, the output end of the non-full-phase discrimination module 1 is connected to the input end of the protection throw-in / out function module 2, the output end of the protection throw-in / out function module 2 is connected to the negative pole of the power supply, the input end of the protection throw-in / out function module 2 is connected to the output end of the protection alarm and fault holding function module 3, the input end of the protection alarm and fault holding function module 3 is connected to the positive pole of the power supply, the positive pole of the power supply is connected to the protection output action module 4, and the other end of the protection output action module 4 is connected to the negative pole of the power supply.

[0022] like Figure 2 As shown, the non-full-phase discrimination module 1 includes a normally open contact 14 of a three-phase circuit breaker body, the normally open contact 14 of the three-phase circuit breaker body is connected in series with a normally closed contact 15 of the three-phase circuit breaker body, the input end of the normally closed contact 15 of the three-phase circuit breaker body is connected to the positive pole of the power supply, and the output end of the normally open contact 14 of the three-phase circuit breaker body is connected in series with the time relay 10; the normally open contact 14 of the three-phase circuit breaker body includes a normally open contact of the A-phase circuit breaker body, a normally open contact of the B-phase circuit breaker body and a normally open contact of the C-phase circuit breaker body connected in parallel; the normally closed contact 15 of the three-phase circuit breaker body includes a normally closed contact of the A-phase circuit breaker body, a normally closed contact of the B-phase circuit breaker body and a normally closed contact of the C-phase circuit breaker body connected in parallel; the normally open contact 14 of the three-phase circuit breaker body and the normally closed contact of the three-phase circuit breaker body are connected in series with each other to realize the "three-phase inconsistency protection" judgment criterion.

[0023] like Figure 3As shown, the protection throw-in / out function module 2 includes a time relay 10, the input end of the time relay 10 is connected to a three-phase normally open contact, the output end of the time relay 10 is connected to the input end of the protection throw-in / out pressure plate 5, the input end of the protection throw-in / out pressure plate 5 is connected to the negative pole of the power supply and the protection alarm and fault holding function module 3, the output end of the protection throw-in / out pressure plate 5 is connected to the negative pole of the power supply, and when "non-full-phase operation" is in progress, the time relay 10 will be started.

[0024] like Figure 4 The protection alarm and fault holding function module 3 includes a time relay delayed closing contact 7, the input end of the time relay delayed closing contact 7 is connected to the positive pole of the power supply, the output end of the time relay delayed closing contact 7 is connected to the export relay 6, the output end of the export relay 6 is connected to the protection throw-in / out pressure plate 5, the time relay delayed closing contact 7 is connected in parallel with the fault holding module and the alarm function module; the fault holding module includes a reset button 9, the input end of the reset button 9 is connected to the positive pole of the power supply, the output end of the reset button 9 is connected to the first export relay contact 8, the output end of the first export relay contact 8 is connected to the export relay 6, the alarm function module includes an indicator light 12, the input end of the indicator light 12 is connected to the positive pole of the power supply, the output end of the indicator light 12 is connected to the second export relay contact 11, and the output end of the second export relay contact 11 is connected to the protection throw-in / out pressure plate 5.

[0025] like Figure 5 As shown, the protection output action module 4 includes an output relay normally open contact 13, the input end of the output relay normally open contact 13 is connected to the positive pole of the power supply, the output end of the output relay normally open contact 13 is connected in series with the three-phase tripping coil 16 of the circuit breaker, and the output end of the three-phase tripping coil 16 of the circuit breaker is connected to the negative pole of the power supply; the output relay normally open contact 13 includes a first-phase output relay normally open contact 17, the first-phase output relay normally open contact 17 is connected in parallel with the second-phase output relay normally open contact 18 and the third-phase output relay normally open contact 19, the output end of the first-phase output relay normally open contact 17 is connected to the A-phase tripping coil of the three-phase tripping coil 16 of the circuit breaker, the output end of the second-phase output relay normally open contact 18 is connected to the B-phase tripping coil of the three-phase tripping coil 16 of the circuit breaker, and the output end of the third-phase output relay normally open contact 19 is connected to the C-phase tripping coil of the three-phase tripping coil 16 of the circuit breaker.

[0026] Working principle of the circuit breaker protection system for preventing the generator from non-full-phase operation of the utility model:

[0027] Take the normally open contact 14 and the normally closed contact 15 of the three-phase circuit breaker body, and connect the normally open contact 14 and the normally closed contact 15 of the three-phase circuit breaker body. Under normal operating conditions, the normally open contact 14 and the normally closed contact 15 of the three-phase circuit breaker body are in the same position. At this time, the entire circuit cannot be conducted, and the time relay 10 has no positive electricity introduced. Neither the time relay 10 nor the output relay will operate. When in a non-full-phase operating state, the normally open contact 14 and the normally closed contact 15 of the three-phase circuit breaker body are in the same position. The positive electricity is introduced into the time relay 10, and the positive electricity is introduced into the protection input and exit pressure plate 5 through the time relay 10. The other end of the protection input and exit pressure plate 5 is connected to the negative electricity end, which will start the time relay 10 and play the function of inconsistent protection delay setting. After the time relay 10 is actuated, the time relay delayed closing contact 7 introduces positive electricity into the output relay 6, starts the output relay 6, and the first output relay contact 8, the second output relay contact 11 and the output relay normally open contact 13 are closed. The first output relay contact 8 and the reset button 9 are connected in series in the circuit, forming a circuit in which the positive pole of the power supply is connected to the reset button 9. After passing through the first output relay contact 8, it is connected to the output relay 6, and is connected to the negative pole of the power supply through the protection throw-in and retract pressure plate 5, which is used to maintain the fault signal and realize the self-holding function; the second output relay contact 11 and the indicator light 12 are connected in series in the circuit, which allows the operating personnel to confirm the cause and signal of the protection action, and has the function of fault indication. The indicator light 12 needs to be reset manually through the reset button 9; the positive power supply is respectively led to the three-phase tripping coil 16 of the circuit breaker through the normally open contact 13 of the output relay, and the other end of the three-phase tripping coil 16 of the circuit breaker is connected to the negative pole of the power supply, thereby realizing the tripping of the three-phase circuit breaker.

[0028] Example 1

[0029] The circuit breaker protection system for preventing the generator from operating in non-full-phase in this embodiment comprises a non-full-phase discrimination module 1, wherein the input end of the non-full-phase discrimination module 1 is connected to the positive pole of a power supply, the output end of the non-full-phase discrimination module 1 is connected to the input end of a protection throw-in / out function module 2, the output end of the protection throw-in / out function module 2 is connected to the negative pole of a power supply, the input end of the protection throw-in / out function module 2 is connected to the output end of a protection alarm and fault holding function module 3, the input end of the protection alarm and fault holding function module 3 is connected to the positive pole of a power supply, the positive pole of a power supply is connected to a protection output action module 4, and the other end of the protection output action module 4 is connected to the negative pole of a power supply.

[0030] The non-full-phase discrimination module 1 includes a normally open contact 14 of a three-phase circuit breaker body, which is connected in series with a normally closed contact 15 of a three-phase circuit breaker body. The input end of the normally closed contact 15 of the three-phase circuit breaker body is connected to the positive pole of the power supply, and the output end of the normally open contact 14 of the three-phase circuit breaker body is connected in series with a time relay 10.

[0031] The three-phase circuit breaker body normally open contact 14 includes an A-phase circuit breaker body normally open contact, and the A-phase circuit breaker body normally open contact is connected in parallel with the B-phase circuit breaker body normally open contact and the C-phase circuit breaker body normally open contact.

[0032] The three-phase circuit breaker body normally closed contacts 15 include the A-phase circuit breaker body normally closed contacts, and the A-phase circuit breaker body normally closed contacts are connected in parallel with the B-phase circuit breaker body normally closed contacts and the C-phase circuit breaker body normally closed contacts.

[0033] Example 2

[0034] The circuit breaker protection system for preventing the generator from operating in non-full-phase in this embodiment comprises a non-full-phase discrimination module 1, wherein the input end of the non-full-phase discrimination module 1 is connected to the positive pole of a power supply, the output end of the non-full-phase discrimination module 1 is connected to the input end of a protection throw-in / out function module 2, the output end of the protection throw-in / out function module 2 is connected to the negative pole of a power supply, the input end of the protection throw-in / out function module 2 is connected to the output end of a protection alarm and fault holding function module 3, the input end of the protection alarm and fault holding function module 3 is connected to the positive pole of a power supply, the positive pole of a power supply is connected to a protection output action module 4, and the other end of the protection output action module 4 is connected to the negative pole of a power supply.

[0035] The non-full-phase discrimination module 1 includes a normally open contact 14 of a three-phase circuit breaker body, which is connected in series with a normally closed contact 15 of a three-phase circuit breaker body. The input end of the normally closed contact 15 of the three-phase circuit breaker body is connected to the positive pole of the power supply, and the output end of the normally open contact 14 of the three-phase circuit breaker body is connected in series with a time relay 10.

[0036] The three-phase circuit breaker body normally open contact 14 includes an A-phase circuit breaker body normally open contact, and the A-phase circuit breaker body normally open contact is connected in parallel with the B-phase circuit breaker body normally open contact and the C-phase circuit breaker body normally open contact.

[0037] The three-phase circuit breaker body normally closed contacts 15 include the A-phase circuit breaker body normally closed contacts, and the A-phase circuit breaker body normally closed contacts are connected in parallel with the B-phase circuit breaker body normally closed contacts and the C-phase circuit breaker body normally closed contacts.

[0038] The protection throwing and withdrawing function module 2 includes a time relay 10, the input end of the time relay 10 is connected to the normally open contact 14 of the three-phase circuit breaker body, the output end of the time relay 10 is connected to the input end of the protection throwing and withdrawing pressure plate 5, the input end of the protection throwing and withdrawing pressure plate 5 is connected to the protection alarm and fault holding function module 3, and the output end of the protection throwing and withdrawing pressure plate 5 is connected to the negative pole of the power supply.

[0039] The protection alarm and fault holding function module 3 includes a time relay delayed closing contact 7, the input end of the time relay delayed closing contact 7 is connected to the positive pole of the power supply, the output end of the time relay delayed closing contact 7 is connected to the output relay 6, the output end of the output relay 6 is connected to the protection throw-in / out pressure plate 5, and the time relay delayed closing contact 7 is connected in parallel with the fault holding module and the alarm function module; the fault holding module includes a reset button 9, the input end of the reset button 9 is connected to the positive pole of the power supply, the output end of the reset button 9 is connected to the first output relay contact 8, the output end of the first output relay contact 8 is connected to the output relay 6, and the alarm function module includes an indicator light 12, the input end of the indicator light 12 is connected to the positive pole of the power supply, the output end of the indicator light 12 is connected to the second output relay contact 11, and the output end of the second output relay contact 11 is connected to the protection throw-in / out pressure plate 5.

[0040] Example 3

[0041] The circuit breaker protection system for preventing the generator from operating in non-full-phase in this embodiment comprises a non-full-phase discrimination module 1, wherein the input end of the non-full-phase discrimination module 1 is connected to the positive pole of a power supply, the output end of the non-full-phase discrimination module 1 is connected to the input end of a protection throw-in / out function module 2, the output end of the protection throw-in / out function module 2 is connected to the negative pole of a power supply, the input end of the protection throw-in / out function module 2 is connected to the output end of a protection alarm and fault holding function module 3, the input end of the protection alarm and fault holding function module 3 is connected to the positive pole of a power supply, the positive pole of a power supply is connected to a protection output action module 4, and the other end of the protection output action module 4 is connected to the negative pole of a power supply.

[0042] The non-full-phase discrimination module 1 includes a normally open contact 14 of a three-phase circuit breaker body, which is connected in series with a normally closed contact 15 of a three-phase circuit breaker body. The input end of the normally closed contact 15 of the three-phase circuit breaker body is connected to the positive pole of the power supply, and the output end of the normally open contact 14 of the three-phase circuit breaker body is connected in series with a time relay 10.

[0043] The three-phase circuit breaker body normally open contact 14 includes an A-phase circuit breaker body normally open contact, and the A-phase circuit breaker body normally open contact is connected in parallel with the B-phase circuit breaker body normally open contact and the C-phase circuit breaker body normally open contact.

[0044] The three-phase circuit breaker body normally closed contacts 15 include the A-phase circuit breaker body normally closed contacts, and the A-phase circuit breaker body normally closed contacts are connected in parallel with the B-phase circuit breaker body normally closed contacts and the C-phase circuit breaker body normally closed contacts.

[0045] The protection throwing and withdrawing function module 2 includes a time relay 10, the input end of the time relay 10 is connected to the normally open contact 14 of the three-phase circuit breaker body, the output end of the time relay 10 is connected to the input end of the protection throwing and withdrawing pressure plate 5, the input end of the protection throwing and withdrawing pressure plate 5 is connected to the protection alarm and fault holding function module 3, and the output end of the protection throwing and withdrawing pressure plate 5 is connected to the negative pole of the power supply.

[0046] The protection alarm and fault holding function module 3 includes a time relay delayed closing contact 7, the input end of the time relay delayed closing contact 7 is connected to the positive pole of the power supply, the output end of the time relay delayed closing contact 7 is connected to the output relay 6, the output end of the output relay 6 is connected to the protection throw-in / out pressure plate 5, and the time relay delayed closing contact 7 is connected in parallel with the fault holding module and the alarm function module; the fault holding module includes a reset button 9, the input end of the reset button 9 is connected to the positive pole of the power supply, the output end of the reset button 9 is connected to the first output relay contact 8, the output end of the first output relay contact 8 is connected to the output relay 6, and the alarm function module includes an indicator light 12, the input end of the indicator light 12 is connected to the positive pole of the power supply, the output end of the indicator light 12 is connected to the second output relay contact 11, and the output end of the second output relay contact 11 is connected to the protection throw-in / out pressure plate 5.

[0047] The protection output action module 4 includes an output relay normally open contact 13, the input end of the output relay normally open contact 13 is connected to the positive pole of the power supply, the output end of the output relay normally open contact 13 is connected in series to the circuit breaker three-phase tripping coil 16, and the output end of the circuit breaker three-phase tripping coil 16 is connected to the negative pole of the power supply.

[0048] The output relay normally open contact 13 includes a first-phase output relay normally open contact 17, which is connected in parallel to a second-phase output relay normally open contact 18 and a third-phase output relay normally open contact 19. The output end of the first-phase output relay normally open contact 17 is connected to the A-phase tripping coil of the three-phase tripping coil 16 of the circuit breaker, the output end of the second-phase output relay normally open contact 18 is connected to the B-phase tripping coil of the three-phase tripping coil 16 of the circuit breaker, and the output end of the third-phase output relay normally open contact 19 is connected to the C-phase tripping coil of the three-phase tripping coil 16 of the circuit breaker.

Claims

1. A circuit breaker protection system for preventing a generator from operating in non-full phases, characterized in that: The invention comprises a non-full-phase discrimination module (1), wherein the input end of the non-full-phase discrimination module (1) is connected to the positive pole of a power supply, the output end of the non-full-phase discrimination module (1) is connected to the input end of a protection throw-in / out function module (2), the output end of the protection throw-in / out function module (2) is connected to the negative pole of a power supply, the input end of the protection throw-in / out function module (2) is connected to the output end of a protection alarm and fault retention function module (3), the input end of the protection alarm and fault retention function module (3) is connected to the positive pole of a power supply, the positive pole of the power supply is connected to a protection output action module (4), and the other end of the protection output action module (4) is connected to the negative pole of a power supply; the non-full-phase discrimination module (1) comprises a normally open contact (14) of a three-phase circuit breaker body, the normally open contact (14) of the three-phase circuit breaker body is connected in series with a normally closed contact (15) of the three-phase circuit breaker body, the input end of the normally closed contact (15) of the three-phase circuit breaker body is connected to the positive pole of a power supply, and the output end of the normally open contact (14) of the three-phase circuit breaker body is connected in series with a time relay (10).

2. The circuit breaker protection system for preventing the generator from operating in non-full-phase mode according to claim 1, characterized in that: The normally open contact (14) of the three-phase circuit breaker body comprises a normally open contact of the A-phase circuit breaker body, the normally open contact of the A-phase circuit breaker body being connected in parallel with the normally open contact of the B-phase circuit breaker body and the normally open contact of the C-phase circuit breaker body; the normally closed contact (15) of the three-phase circuit breaker body comprises a normally closed contact of the A-phase circuit breaker body, the normally closed contact of the A-phase circuit breaker body being connected in parallel with the normally closed contact of the B-phase circuit breaker body and the normally closed contact of the C-phase circuit breaker body.

3. The circuit breaker protection system for preventing the generator from operating in non-full-phase mode according to claim 1, characterized in that: The protection throw-in / out function module (2) comprises a time relay (10), the input end of the time relay (10) is connected to a normally open contact (14) of a three-phase circuit breaker body, the output end of the time relay (10) is connected to an input end of a protection throw-in / out pressure plate (5), the input end of the protection throw-in / out pressure plate (5) is connected to a protection alarm and fault holding function module (3), and the output end of the protection throw-in / out pressure plate (5) is connected to a negative pole of a power supply.

4. The circuit breaker protection system for preventing the generator from operating in non-full-phase mode according to claim 1, characterized in that: The protection alarm and fault holding function module (3) comprises a time relay delayed closing contact (7), the input end of the time relay delayed closing contact (7) is connected to the positive pole of the power supply, the output end of the time relay delayed closing contact (7) is connected to the output relay (6), the output end of the output relay (6) is connected to the protection throw-in / out pressure plate (5), and the time relay delayed closing contact (7) is connected in parallel to the fault holding module and the alarm function module.

5. The circuit breaker protection system for preventing the generator from operating in non-full-phase mode according to claim 4, characterized in that: The fault holding module comprises a reset button (9), an input end of the reset button (9) is connected to the positive pole of the power supply, an output end of the reset button (9) is connected to the first output relay contact (8), an output end of the first output relay contact (8) is connected to the output relay (6), and the alarm function module comprises an indicator light (12), an input end of the indicator light (12) is connected to the positive pole of the power supply, an output end of the indicator light (12) is connected to the second output relay contact (11), and an output end of the second output relay contact (11) is connected to the protection throw-in / out pressure plate (5).

6. The circuit breaker protection system for preventing the generator from operating in non-full-phase mode according to claim 5, characterized in that: The protection output action module (4) comprises an output relay normally open contact (13), the input end of the output relay normally open contact (13) is connected to the positive pole of a power supply, the output end of the output relay normally open contact (13) is connected in series to a three-phase tripping coil (16) of a circuit breaker, and the output end of the three-phase tripping coil (16) of the circuit breaker is connected to the negative pole of the power supply.

7. The circuit breaker protection system for preventing the generator from operating in non-full phase according to claim 6, characterized in that: The output relay normally open contact (13) comprises a first-phase output relay normally open contact (17), the first-phase output relay normally open contact (17) is connected in parallel to a second-phase output relay normally open contact (18) and a third-phase output relay normally open contact (19), the output end of the first-phase output relay normally open contact (17) is connected to the A-phase tripping coil of the three-phase tripping coil (16) of the circuit breaker, the output end of the second-phase output relay normally open contact (18) is connected to the B-phase tripping coil of the three-phase tripping coil (16) of the circuit breaker, and the output end of the third-phase output relay normally open contact (19) is connected to the C-phase tripping coil of the three-phase tripping coil (16) of the circuit breaker.

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