Test loop control and protection device for high-frequency impact generator

Abstract

The utility model provides a loop control and protection device for a high-frequency impact generator test, which comprises a control cabinet, a first protection cabinet and a second protection cabinet, the control cabinet, the first protection cabinet and the second protection cabinet are electrically connected, the first protection cabinet and the second protection cabinet are respectively and electrically connected with a TA / VA system, and the control cabinet is electrically connected with a power plant control system. The control cabinet comprises a management CPU system and a management inverter power supply system. The first protection cabinet comprises a first low-pass filtering system, a first A / D system, a first protection CPU system and a first FPGA system. The second protection cabinet comprises a second low-pass filtering system, a second A / D system, a second protection CPU system and a second FPGA system.By arranging two independent protection systems, protection quit caused by hardware faults is prevented, the protection systems have redundancy, the fault-tolerant capability is improved, the special application requirements of the impact generator are met, and the service life of the impact generator is prolonged. And comprehensive protection is provided for the impact generator.

Description

Technical Field

[0001] This utility model belongs to the field of generator testing technology, specifically relating to a control and protection device for a test circuit of a high-frequency impulse generator. Background Technology

[0002] To simulate accident conditions in power systems, such as short circuits and overvoltages, and to test the withstand capabilities of high-voltage circuit breakers, high-voltage switches, transformers, and other equipment, impulse generators are required. Impulse generators have extremely high withstand capabilities, capable of withstanding dozens of short-circuit tests per day, while conventional generators are only allowed three short circuits during their lifespan. Furthermore, impulse generators can be frequently started and stopped, and can withstand short-circuit currents and transient overvoltages. Given the special operating conditions of impulse generators, a multi-layered protection system and precise control are essential, such as overvoltage and overcurrent protection, and loss of excitation and excitation protection. Traditional testing systems typically use a single protection device; if the protection system fails due to hardware malfunction, it can easily lead to test interruption or equipment damage.

[0003] Therefore, the above problems urgently need to be solved. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, this utility model provides a control and protection device for the test circuit of a high-frequency impulse generator. By setting up two independent protection systems, the impulse generator is controlled and protected, preventing protection from being deactivated due to hardware failure. This makes the protection system redundant, improves fault tolerance, and meets the special application requirements of impulse generators.

[0005] Technical solution: In order to achieve the above objectives, this utility model provides a control and protection device for a test circuit of a high-frequency impulse generator, including a control cabinet, a first protection cabinet and a second protection cabinet. The control cabinet, the first protection cabinet and the second protection cabinet are electrically connected. The first protection cabinet and the second protection cabinet are respectively electrically connected to the TA / VA system. The control cabinet is electrically connected to the power plant control system.

[0006] The control cabinet includes a management CPU system and a management inverter power supply system, and the management CPU system and the management inverter power supply system are electrically connected.

[0007] The first protection cabinet includes a first low-pass filter system, a first A / D system, a first protection CPU system, and a first FPGA system, which are electrically connected.

[0008] The second protection cabinet includes a second low-pass filter system, a second A / D system, a second protection CPU system, and a second FPGA system, which are electrically connected.

[0009] The aforementioned TA / VA system includes current transformers and voltage transformers, which convert high voltage and large current into low voltage and small current signals. The first and second low-pass filter systems are configured as low-pass filters to suppress high-frequency noise and interference, improve signal quality, and prevent signal distortion. The first and second A / D systems are configured as analog-to-digital converters, which convert the detected continuously changing analog signals (such as voltage and current signals) into discrete digital signals. The first and second FPGA systems are configured as programmable digital chips for Fourier transform and fault feature extraction.

[0010] This invention relates to the control and protection of an impulse generator. The TA / VA system is electrically connected to the impulse generator, converting the high voltage and large current output from the generator into a low voltage and small current signal. The converted signal is then filtered by a first low-pass filter system and a second low-pass filter system to remove high-frequency noise before being input to a first A / D system and a second A / D system. These systems convert the analog signal into a digital signal. The first and second FPGA systems analyze the converted data to identify faults. Based on the analysis results from the first and second FPGA systems, and according to set thresholds, the first and second protection CPU systems control and trigger circuit breaker protection. The management CPU system is electrically connected to the power plant control system. It monitors the operating status of the first and second protection CPU systems in real time, identifies anomalies, and triggers redundancy switching and alarms. The management CPU system receives commands from the power plant control system and feeds back the data from the first and second protection CPU systems to the human-machine interface. The management CPU system, the first protection CPU system, and the second protection CPU system work together to protect the impulse generator from fault damage. When both the first and second protection cabinets are working normally, the AND gate outputs. If either the first or second protection cabinet fails, the faulty cabinet exits protection mode, and the other protection cabinet outputs independently. If both the first and second protection cabinets fail simultaneously, an emergency shutdown of the impact generator is triggered. This invention, by setting up two independent systems—the first and second protection cabinets—allows the same set of data from the impact generator to be processed and judged simultaneously by two independent systems, preventing protection exit due to hardware failure. This provides redundancy to the protection system, improves fault tolerance, meets the special application requirements of impact generators, and provides comprehensive protection for them. Furthermore, the independent first and second protection cabinets allow for independent configuration of equipment modules, supporting online component replacement and reducing downtime.

[0011] Furthermore, in the aforementioned control and protection device for the test circuit of a high-frequency impulse generator, the first protection cabinet includes a first inverter power supply system, and the second protection cabinet includes a second inverter power supply system. The first inverter power supply system independently supplies power to the first protection cabinet, and the second inverter power supply system independently supplies power to the second protection cabinet. Since the first and second protection cabinets are powered independently, a failure in either inverter power supply will not affect the operation of the other protection cabinet, avoiding protection interruption. Simultaneously, the independent power supply allows for the individual disconnection of the faulty protection cabinet without interrupting the protection function, enabling online maintenance of the protection cabinet, reducing downtime, and improving system reliability.

[0012] Furthermore, in the aforementioned control and protection system for the impulse generator test circuit, the management CPU system is electrically connected to the first protection CPU system and the second protection CPU system. The first and second protection CPU systems are respectively electrically connected to the output system. The output system is equipped with multiple relays, including a first relay KA1, a second relay KA2, a third relay KA3, a fourth relay KA4, and a fifth relay KA5. The first relay KA1, the second relay KA2, and the third relay KA3 are connected in series, and the third relay KA3 and the fourth relay KA4 are connected in parallel with the first relay KA1 and the second relay KA2, respectively. When the first and second protection cabinets are operating normally, the first and second protection CPU systems issue a normal operation signal, the first relay KA1 and the second relay KA2 close, the third relay KA3 and the fourth relay KA4 open, the fifth relay KA5 becomes active, and an output signal is generated to control the impulse generator to operate normally.

[0013] When the first protection cabinet malfunctions, the second protection cabinet operates normally. The first protection CPU system sends a fault signal, and the second protection CPU system sends a normal operation signal. The first relay KA1 opens, the second relay KA2 closes, the third relay KA3 closes, the fourth relay KA4 opens, the third relay KA3 closes to bypass the first relay KA1, and the fifth relay KA5 becomes active, outputting a signal to control the impulse generator to operate normally.

[0014] When the first protection cabinet is operating normally and the second protection cabinet malfunctions, the first protection CPU system sends a normal operation signal, while the second protection CPU system sends a fault signal. The first relay KA1 closes, the second relay KA2 opens, the third relay KA3 opens, and the fourth relay KA4 closes. The closing of the fourth relay KA4 bypasses the second relay KA2, and the fifth relay KA5 becomes active, outputting a signal to control the impulse generator to operate normally. Through the dynamic switching of relays, automatic switching between the two protection systems is achieved, ensuring the reliability and stability of the protection device.

[0015] Furthermore, in the aforementioned control and protection device for the high-frequency impulse generator test circuit, the first inverter power supply system is electrically connected to the first power plant power supply, and the second inverter power supply system is electrically connected to the second power plant power supply. The management inverter power supply system is electrically connected to both the first and second power plant power supplies via a power switching relay. The first and second inverter power supply systems are respectively connected to the first and second power plant power supplies to ensure power connection redundancy, ensuring normal power supply from the other power supply in case of a fault in one power supply. The power switching relay can automatically identify power faults and automatically switch power supplies. The management inverter power supply system switches between the first and second power plant power supplies via the power switching relay, ensuring the stability of the management inverter power supply system, ensuring the normal operation of the control cabinet, and improving the reliability and safety of the system.

[0016] Furthermore, in the aforementioned control and protection device for the high-frequency impulse generator test circuit, the control cabinet is equipped with an LCD screen, which is a touch screen. The LCD screen displays operating data, protection status, and fault information in real time. Operators can set protection values ​​through the LCD screen, which provides a user-friendly human-machine interface, improving the ease of use of the system.

[0017] Furthermore, in the aforementioned control and protection device for the test circuit of a high-frequency impulse generator, the first protection cabinet includes a first enclosure and a second enclosure, which are independently connected within the first protection cabinet. The first enclosure includes the main protection system for the generator and excitation transformer, as well as the backup protection system for the generator and excitation transformer. The second enclosure includes the main protection system for the main transformer and high-frequency transformer, as well as the backup protection system for the main transformer and high-frequency transformer. The first and second enclosures are connected in parallel within the system. The first enclosure performs the following protection functions: generator differential protection, generator inter-turn protection (longitudinal zero-sequence voltage type or transverse differential protection); generator symmetrical overload (inverse time), asymmetrical overload (inverse time), composite voltage overcurrent, loss of excitation, reverse power, overvoltage, 00% stator grounding, rotor one-point or two-point grounding, excitation circuit overload; excitation variable speed overcurrent protection; current transformer (CT) disconnection and current transformer (TV) disconnection. The second enclosure performs the following protection functions: differential protection for the main transformer and the high-voltage transformer; composite overcurrent, zero-sequence overcurrent, overload, ventilation start-up, and gap zero-current / voltage protection on the high-voltage side of the main transformer; composite overcurrent, zero-sequence overcurrent, overload, ventilation start-up, and gap zero-current / voltage protection on the medium-voltage side of the main transformer; main transformer failure start-up and incomplete phase protection; composite overcurrent and AB branch overcurrent protection on the high-voltage transformer; current transformer (CT) disconnection and current transformer (TV) disconnection. By configuring the generator and excitation transformer main protection in different enclosures, they become independent of each other. This ensures that if the protection function of one enclosure fails, the other enclosure can still provide protection, improving system reliability and providing comprehensive protection for the generator.

[0018] Furthermore, in the aforementioned control and protection device for the test circuit of a high-frequency impulse generator, the second protection cabinet includes a third and a fourth enclosure, which are independently connected within the second protection cabinet. The third enclosure includes the main protection system for the generator and excitation transformer, as well as a backup protection system for the generator and excitation transformer. The fourth enclosure includes the main protection system for the main transformer and the high-frequency transformer, as well as a backup protection system for the main transformer and the high-frequency transformer. The third and fourth enclosures are connected in parallel within the system. The second protection cabinet has the same configuration as the first protection cabinet, improving the reliability of the system.

[0019] Furthermore, in the aforementioned control and protection device for the test circuit of the high-frequency impulse generator, the control cabinet includes a non-electrical quantity protection system. The non-electrical quantity protection system's protection functions include: temperature, winding temperature, pressure relief, cooler complete shutdown, and oil level.

[0020] Furthermore, in the aforementioned control and protection device for the test circuit of a high-frequency impulse generator, the control cabinet includes a fieldbus module, and the management CPU system is connected to the power plant control system through the fieldbus module.

[0021] As can be seen from the above technical solution, this utility model has the following beneficial effects: This utility model is used for the control and protection device of the test circuit of a high-frequency impulse generator. By setting up two independent protection systems, namely the first protection cabinet and the second protection cabinet, the same set of data of the impulse generator is processed and judged by the two independent systems at the same time, preventing the protection from being deactivated due to hardware failure. This makes the protection system redundant, improves the fault tolerance capability, meets the special application requirements of the impulse generator, and provides comprehensive protection for the impulse generator. At the same time, the independent first protection cabinet and the second protection cabinet allow the equipment modules to be set independently, support online replacement of components, and reduce downtime. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the control and protection device for the test circuit of the high-frequency impulse generator according to this utility model;

[0023] Figure 2 This is a schematic diagram of the hardware structure of the high-frequency impulse generator test circuit control and protection device of this utility model;

[0024] Figure 3 This is a schematic diagram of the power supply structure of the test circuit control and protection device for high-frequency impulse generators according to this utility model;

[0025] Figure 4 This is a schematic diagram of the export system.

[0026] In the diagram: 1. Control cabinet; 11. Management CPU system; 12. Management inverter power supply system; 13. LCD screen; 2. First protection cabinet; 21. First low-pass filter system; 22. First A / D system; 23. First protection CPU system; 24. First FPGA system; 25. First inverter power supply system; 27. First chassis; 28. Second chassis; 3. Second protection cabinet; 31. Second low-pass filter system; 32. Second A / D system; 33. Second protection CPU system; 34. Second FPGA system; 35. Second inverter power supply system; 37. Third chassis; 38. Fourth chassis; 4. TA / VA system; 41. First power plant power supply; 42. Second power plant power supply; 43. Power switching relay; 5. Output system. Detailed Implementation

[0027] Example 1

[0028] like Figure 1-2 The diagram illustrates a control and protection device for a high-frequency impulse generator test circuit, comprising a control cabinet 1, a first protection cabinet 2, and a second protection cabinet 3. The control cabinet 1, first protection cabinet 2, and second protection cabinet 3 are electrically connected. The first protection cabinet 2 and second protection cabinet 3 are respectively electrically connected to a TA / VA system 4. The control cabinet 1 is electrically connected to the power plant control system. The control cabinet 1 includes a management CPU system 11 and a management inverter power supply system 12, which are electrically connected. The first protection cabinet 2 includes a first low-pass filter system 21, a first A / D system 22, a first protection CPU system 23, and a first FPGA system 24, which are electrically connected. The second protection cabinet 3 includes a second low-pass filter system 31, a second A / D system 32, a second protection CPU system 33, and a second FPGA system 34, which are electrically connected. The aforementioned TA / VA system 4 includes current transformers and voltage transformers, which convert high voltage and large current into low voltage and small current signals. The aforementioned first low-pass filter system 21 and second low-pass filter system 31 are used to suppress high-frequency noise and interference, improve signal quality, and prevent signal distortion. The aforementioned first A / D system 22 and second A / D system 32 are configured as analog-to-digital converters, which convert the detected continuously changing analog signals (such as voltage and current signals) into discrete digital signals. The aforementioned first FPGA system 24 and second FPGA system 34 are configured as programmable digital chips used for Fourier transform and fault feature extraction.

[0029] In this embodiment, the management CPU system 11 is electrically connected to the first protection CPU system 23 and the second protection CPU system 33. The first protection CPU system 23 and the second protection CPU system 33 are respectively electrically connected to the output system 5. The output system 5 is equipped with multiple relays, including a first relay KA1, a second relay KA2, a third relay KA3, a fourth relay KA4, and a fifth relay KA5. The first relay KA1, the second relay KA2, and the third relay KA3 are connected in series, and the third relay KA3 and the fourth relay KA4 are connected in parallel with the first relay KA1 and the second relay KA2, respectively. When the first protection cabinet 2 and the second protection cabinet 3 are working normally, the first protection CPU system 23 and the second protection CPU system 33 perform self-tests on the first protection cabinet 2 and the second protection CPU system 33, respectively, and issue normal operation signals. The first relay KA1 and the second relay KA2 are closed, the third relay KA3 and the fourth relay KA4 are open, the fifth relay KA5 is active, and an output signal is generated to control the normal operation of the impulse generator.

[0030] When the first protection cabinet 2 malfunctions, the second protection cabinet 3 operates normally. The first protection CPU system 23 sends a fault signal, and the second protection CPU system 33 sends a normal operation signal. The first relay KA1 is disconnected, the second relay KA2 is closed, the third relay KA3 is closed, the fourth relay KA4 is disconnected, the third relay KA3 is closed to bypass the first relay KA1, and the fifth relay KA5 is active, outputting a signal to control the normal operation of the impulse generator.

[0031] When the first protection cabinet 2 is working normally and the second protection cabinet 3 malfunctions, the first protection CPU system 23 sends a normal operation signal and the second protection CPU system 33 sends a fault signal. The first relay KA1 closes, the second relay KA2 opens, the third relay KA3 opens, and the fourth relay KA4 closes. The closing of the fourth relay KA4 bypasses the second relay KA2, and the fifth relay KA5 becomes active, outputting a signal to control the normal operation of the impulse generator.

[0032] In this implementation, control cabinet 1 is equipped with an LCD screen 13, which is a touch screen. The LCD screen 13 displays operating data, protection status, and fault information in real time. Operators can set protection values ​​through the LCD screen 13. The LCD screen 13 provides a user-friendly human-machine interface, improving the ease of use of the system.

[0033] In this implementation, the first protection cabinet 2 includes a first enclosure 27 and a second enclosure 28, which are independently connected within the first protection cabinet 2. The first enclosure 27 includes the main protection system for the generator and excitation transformer, as well as the backup protection system for the generator and excitation transformer. The second enclosure 28 includes the main protection system for the main transformer and high-voltage transformer, as well as the backup protection system for the main transformer and high-voltage transformer. The first enclosure 27 and the second enclosure 28 are connected in parallel within the system. The first enclosure 27 performs the following protection functions: generator differential protection, generator inter-turn protection (longitudinal zero-sequence voltage type or transverse differential protection); generator symmetrical overload (inverse time), asymmetrical overload (inverse time), composite voltage overcurrent protection, loss of excitation, reverse power protection, overvoltage protection, 100% stator grounding protection, rotor one-point or two-point grounding protection, excitation circuit overload protection; excitation variable speed overcurrent protection; current transformer (CT) disconnection and current transformer (TV) disconnection. The second enclosure 28 performs the following protection functions: differential protection for the main transformer and differential protection for the high-voltage transformer; composite overcurrent protection, zero-sequence overcurrent protection, overload protection, ventilation start-up protection, and gap zero-current / voltage protection for the high-voltage side of the main transformer; composite overcurrent protection, zero-sequence overcurrent protection, overload protection, ventilation start-up protection, and gap zero-current / voltage protection for the medium-voltage side of the main transformer; main transformer failure start-up protection and incomplete phase protection; composite overcurrent protection for the high-voltage transformer and AB branch overcurrent protection; current transformer (CT) disconnection and current transformer (TV) disconnection. The above protection functions employ conventional techniques in this field.

[0034] In this implementation, the second protection cabinet 3 includes a third enclosure 37 and a fourth enclosure 38, which are independently connected within the second protection cabinet 3. The third enclosure 37 includes the main protection system for the generator and excitation transformer, as well as a backup protection system for the generator and excitation transformer. The fourth enclosure 38 includes the main protection system for the main transformer and high-voltage transformer, as well as a backup protection system for the main transformer and high-voltage transformer. The third enclosure 37 and the fourth enclosure 38 are connected in parallel within the system. The second protection cabinet 3 has the same configuration as the first protection cabinet 2, improving the reliability of the system.

[0035] In this embodiment, control cabinet 1 includes a non-electrical protection system. The non-electrical protection system provides the following protection functions: temperature, winding temperature, pressure relief, cooler complete shutdown, and oil level. These protection functions utilize conventional techniques in this field.

[0036] In this embodiment, the control cabinet 1 includes a fieldbus module, and the management CPU system 11 is connected to the power plant control system through the fieldbus module.

[0037] like Figure 3The control and protection device for the test circuit of the high-frequency impulse generator shown includes a first protection cabinet 2 comprising a first inverter power supply system 25 and a second protection cabinet 3 comprising a second inverter power supply system 35. The first inverter power supply system 25 independently supplies power to the first protection cabinet 2, and the second inverter power supply system 35 independently supplies power to the second protection cabinet 3. Since the first protection cabinet 2 and the second protection cabinet 3 are powered independently, a failure in either inverter power supply will not affect the operation of the other protection cabinet, thus avoiding protection interruption.

[0038] In this implementation, the first inverter power supply system 25 is electrically connected to the first power plant power supply 41, and the second inverter power supply system 35 is electrically connected to the second power plant power supply 42. The management inverter power supply system 12 is electrically connected to both the first and second power plant power supplies 41 and 42 via a power switching relay 43. The first inverter power supply system 25 and the second inverter power supply system 35 are respectively connected to the first and second power plant power supplies 41 and 42 to ensure power supply redundancy; if one power supply fails, the other power supply will continue to provide power. The power switching relay 43 can automatically identify power supply faults and automatically switch power supplies.

[0039] This invention is used to control and protect an impulse generator. The TA / VA system 4 is electrically connected to the impulse generator. The TA / VA system 4 converts the high voltage and large current output from the impulse generator into a low voltage and small current signal. The converted signal is filtered by a first low-pass filter system 21 and a second low-pass filter system 31 to remove high-frequency noise before being input to a first A / D system 22 and a second A / D system 32. The first A / D system 22 and the second A / D system 32 convert the analog signal into a digital signal. The first FPGA system 24 and the second FPGA system 34 analyze the converted data from the first A / D system 22 and the second A / D system 32 to identify faults. Based on the analysis results from the first FPGA system 24 and the second FPGA system 34, the first protection CPU system and the second protection CPU system 33 control and trigger circuit breaker protection according to a set threshold. The management CPU system 11 is electrically connected to the power plant control system. The management CPU system 11 monitors the operating status of the first protection CPU system and the second protection CPU system 33 in real time, identifies anomalies, and triggers redundancy switching and alarms. The management CPU system 11 receives commands from the power plant control system and feeds back the data received from the first protection CPU system and the second protection CPU system 33 to the human-machine interface. The management CPU system 11, the first protection CPU system, and the second protection CPU system 33 work together to protect the impulse generator from fault damage. When both the first protection cabinet 2 and the second protection cabinet 3 are working normally, an AND gate output is executed. If either the first protection cabinet 2 or the second protection cabinet 3 fails, the faulty protection cabinet exits protection mode, and the other protection cabinet outputs independently. If both the first protection cabinet 2 and the second protection cabinet 3 fail simultaneously, an emergency shutdown of the impulse generator is triggered.

[0040] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A control and protection device for a high-frequency impulse generator test circuit, characterized in that: It includes a control cabinet (1), a first protection cabinet (2), and a second protection cabinet (3). The control cabinet (1), the first protection cabinet (2), and the second protection cabinet (3) are electrically connected. The first protection cabinet (2) and the second protection cabinet (3) are electrically connected to the TA / VA system (4), and the control cabinet (1) is electrically connected to the power plant control system. The control cabinet (1) includes a management CPU system (11) and a management inverter power supply system (12), which are electrically connected; The first protection cabinet (2) includes a first low-pass filter system (21), a first A / D system (22), a first protection CPU system (23) and a first FPGA system (24), and the first low-pass filter system (21), the first A / D system (22), the first protection CPU system (23) and the first FPGA system (24) are electrically connected; The second protection cabinet (3) includes a second low-pass filter system (31), a second A / D system (32), a second protection CPU system (33), and a second FPGA system (34), which are electrically connected.

2. The control and protection device for a high-frequency impulse generator test circuit according to claim 1, characterized in that: The first protection cabinet (2) includes a first inverter power supply system (25), and the second protection cabinet (3) includes a second inverter power supply system (35). The first inverter power supply system (25) supplies power to the first protection cabinet (2) independently, and the second inverter power supply system (35) supplies power to the second protection cabinet (3) independently.

3. The control and protection device for a high-frequency impulse generator test circuit according to claim 1, characterized in that: The management CPU system (11) is electrically connected to the first protection CPU system (23) and the second protection CPU system (33), and the first protection CPU system (23) and the second protection CPU system (33) are electrically connected to the output system (5) respectively.

4. The control and protection device for a high-frequency impulse generator test circuit according to claim 2, characterized in that: The first inverter power supply system (25) is electrically connected to the first power plant power supply (41), and the second inverter power supply system (35) is electrically connected to the second power plant power supply (42); the management inverter power supply system (12) is electrically connected to the first power plant power supply (41) and the second power plant power supply (42) through a power switching relay (43).

5. The control and protection device for a high-frequency impulse generator test circuit according to claim 1, characterized in that: The control cabinet (1) is equipped with an LCD screen (13), which is a touch screen.

6. The control and protection device for a high-frequency impulse generator test circuit according to claim 1, characterized in that: The first protection cabinet (2) includes a first chassis (27) and a second chassis (28). The first chassis (27) and the second chassis (28) are independently connected in the first protection cabinet (2). The first chassis (27) includes the main protection system of the generator and the excitation transformer and the backup protection system of the generator and the excitation transformer. The second chassis (28) includes the main protection system of the main transformer and the high-voltage transformer and the backup protection system of the main transformer and the high-voltage transformer. The first chassis (27) and the second chassis (28) are connected in parallel in the system.

7. The control and protection device for a high-frequency impulse generator test circuit according to claim 6, characterized in that: The second protection cabinet (3) includes a third enclosure (37) and a fourth enclosure (38). The third enclosure (37) and the fourth enclosure (38) are independently connected in the second protection cabinet (3). The third enclosure (37) includes the main protection system of the generator and the excitation transformer and the backup protection system of the generator and the excitation transformer. The fourth enclosure (38) includes the main protection system of the main transformer and the high-voltage transformer and the backup protection system of the main transformer and the high-voltage transformer. The third enclosure (37) and the fourth enclosure (38) are connected in parallel in the system.

8. The control and protection device for a high-frequency impulse generator test circuit according to claim 7, characterized in that: The control cabinet (1) includes a non-electrical protection system.

9. The control and protection device for a high-frequency impulse generator test circuit according to claim 8, characterized in that: The control cabinet (1) includes a fieldbus module, and the management CPU system (11) is connected to the power plant control system through the fieldbus module.

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