Safety test device and test method of emergency generator, electronic equipment and medium

Abstract

The invention relates to the technical field of nuclear power safety, in particular to a safety test device and test method for an emergency generator, electronic equipment and a medium. The safety test device of the emergency generator is configured on a nuclear power plant mobile carrier provided with a box body, the safety test device is installed in the box body, and the safety test device comprises a system side wire inlet cabinet module, an on-load voltage regulating transformer module, a generator side wire inlet cabinet module and a disc table module. According to the embodiment of the invention, through the integrated design, all the function modules are installed in the box body in a centralized manner, and a complete and movable safety test device is formed. According to the design, the problem that a traditional mobile load platform is affected by weather due to exposure in the external environment is effectively avoided, and the environmental adaptability and reliability of the safety test device are improved. In addition, due to close cooperation and optimized cooperation among the functional modules, fault points are reduced, and the reliability of the safety test of the emergency generator is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of nuclear power safety, and in particular to a safety test device and test method for an emergency generator, an electronic device, and a medium. Background Art

[0002] During the operation of a nuclear power plant, as a key backup power source, the reliability and performance of the emergency generator are crucial. According to nuclear safety regulations, the emergency generator of a nuclear power unit needs to be tested regularly.

[0003] In the related art, the test process for an emergency generator needs to be completed with the aid of a mobile load platform. However, in actual application, the reliability of the mobile load platform is low and it is easily affected by external factors such as weather. Therefore, how to test the emergency generator in a more reliable manner is still an urgent problem to be solved in the industry. Summary of the Invention

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present application provides a safety test device and test method for an emergency generator, an electronic device, and a medium, which can test the emergency generator in a more reliable manner.

[0005] According to an embodiment of the first aspect of the present application, the safety test device for an emergency generator is configured on a nuclear power plant mobile vehicle provided with a box body. The safety test device is installed inside the box body and includes a system-side incoming line cabinet module, a on-load tap-changer transformer module, a generator-side incoming line cabinet module, and a panel module.

[0006] The system-side incoming line cabinet module is used to access the nuclear power plant power system of the target nuclear power plant to access electric energy from the nuclear power plant power system.

[0007] The on-load tap-changer transformer module is arranged between the system-side incoming line cabinet module and the generator-side incoming line cabinet module to transmit the electric energy accessed from the nuclear power plant power system.

[0008] The generator-side incoming line cabinet module is connected to the on-load tap-changer transformer module. Among them, the generator-side incoming line cabinet module is used to be connected to the emergency generator of the target nuclear power plant to perform grid connection operation on the electric energy transmitted by the on-load tap-changer transformer module and the electric energy generated by the emergency generator.

[0009] The panel module is used to control the system-side incoming line cabinet module, the on-load tap-changer transformer module, and the generator-side incoming line cabinet module to perform safety test operations on the emergency generator and obtain safety test data.

[0010] According to some embodiments of the present application, an arc suppression coil is provided in the on-load tap-changer transformer module. One end of the arc suppression coil is connected to the neutral point of the transformer of the on-load tap-changer transformer module, and the other end of the arc suppression coil is grounded.

[0011] According to some embodiments of the present application, the system-side incoming line cabinet module includes a first circuit breaker, a system-side cable, and a first current transformer. The first current transformer is provided on the system-side cable. Wherein, the first circuit breaker is used to be controlled by the panel module to perform a conduction operation or a cutoff operation on the system-side incoming line cabinet module, and the first current transformer is used to monitor in real time the value of the first cable current flowing through the system-side cable and transmit the value of the first cable current to the panel module.

[0012] According to some embodiments of the present application, the generator-side incoming line cabinet module includes a second circuit breaker, a generator-side cable, and a second current transformer. The second current transformer is provided on the generator-side cable. Wherein, the second circuit breaker is used to be controlled by the panel module to perform a conduction operation or a cutoff operation on the generator-side incoming line cabinet module, and the second current transformer is used to monitor in real time the value of the second cable current flowing through the generator-side cable and transmit the value of the second cable current to the panel module.

[0013] According to some embodiments of the present application, the generator-side incoming line cabinet module further includes a voltage transformer. The voltage transformer is connected between the second current transformer and the generator-side incoming line cabinet module, and the voltage transformer is used to monitor in real time the value of the cable voltage of the generator-side cable.

[0014] According to some embodiments of the present application, the safety test device further includes a transformer protection device. The transformer protection device is connected to the system-side incoming line cabinet module, the on-load tap-changer transformer module, and the generator-side incoming line cabinet module.

[0015] According to the safety test method of an emergency generator in the second aspect embodiments of the present application, which is applied to the safety test device in the first aspect embodiments of the present application, the method includes:

[0016] Obtain a test start instruction, and adjust the emergency generator of the target nuclear power plant to the operating state according to the test start instruction;

[0017] Monitor the electric energy transmitted from the on-load tap-changer transformer module to the generator-side incoming line cabinet module to obtain system power parameters;

[0018] Monitor the electric energy generated by the emergency generator in the operating state to obtain power generation parameters;

[0019] In response to the system power parameters and the power generation parameters meeting the preset grid connection conditions, grid connection operations are performed on the electric energy transmitted by the on-load tap-changer transformer module and the electric energy generated by the emergency generator;

[0020] After performing the grid connection operation, control the system side incoming line cabinet module, the on-load tap-changer transformer module, and the generator side incoming line cabinet module to perform a safety test operation on the emergency generator to obtain safety test data.

[0021] According to some embodiments of the present application, the step of performing grid connection operations on the electric energy transmitted by the on-load tap-changer transformer module and the electric energy generated by the emergency generator in response to the system power parameters and the power generation parameters meeting the preset grid connection conditions includes:

[0022] Based on the system power parameters and the power generation parameters, perform a voltage value comparison to obtain a voltage value comparison result;

[0023] Based on the system power parameters and the power generation parameters, perform a frequency comparison to obtain a frequency comparison result;

[0024] Based on the system power parameters and the power generation parameters, perform a phase comparison to obtain a phase comparison result;

[0025] In response to the voltage value comparison result meeting the preset voltage value comparison condition, the frequency comparison result meeting the preset frequency comparison condition, and the phase comparison result meeting the preset phase comparison condition, determine that the system power parameters and the power generation parameters meet the preset grid connection conditions, and perform grid connection operations on the electric energy transmitted by the on-load tap-changer transformer module and the electric energy generated by the emergency generator.

[0026] In a third aspect, an embodiment of the present application provides an electronic device, including: a memory and a processor, the memory stores a computer program, and when the processor executes the computer program, the safety test method described in any one of the embodiments of the second aspect of the present application is implemented.

[0027] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, the storage medium stores a program, and when the program is executed by a processor, the safety test method described in any one of the embodiments of the second aspect of the present application is implemented.

[0028] The safety test device and test method for an emergency generator, electronic device, and medium according to the embodiments of the present application at least have the following beneficial effects:

[0029] The safety test device for the emergency generator according to the embodiment of the present application is configured in a nuclear power plant mobile vehicle provided with a box body. The safety test device is installed inside the box body and includes a system-side incoming line cabinet module, a load tap-changing transformer module, a generator-side incoming line cabinet module, and a panel module. Through integrated design, the embodiment of the present application centrally installs each functional module inside the box body to form a complete and movable safety test device. This design effectively avoids the problem that the traditional mobile load platform is affected by the weather due to being exposed to the external environment, and improves the environmental adaptability and reliability of the safety test device. In addition, the close cooperation and optimized coordination among the functional modules reduce the failure points, further improving the reliability of the safety test for the emergency generator.

[0030] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 is a schematic block diagram of the modules of the safety test device for the emergency generator in the embodiment of the present application;

[0033] Figure 2 is a schematic flow chart of the safety test method for the emergency generator in the embodiment of the present application;

[0034] Figure 3 is another schematic flow chart of the safety test method for the emergency generator in the embodiment of the present application;

[0035] Figure 4 is the electrical connection diagram of the safety test device for the emergency generator in the embodiment of the present application;

[0036] Figure 5 is another schematic block diagram of the modules of the safety test device for the emergency generator in the embodiment of the present application;

[0037] Figure 6 is a schematic hardware structure diagram of the electronic device provided by the embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.

[0039] In the description of this application, "several" means one or more, "multiple" means more than two, and terms such as "greater than", "less than", and "exceeding" are understood not to include the base number, while terms such as "above", "below", and "within" are understood to include the base number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features or implicitly specifying the sequence of the indicated technical features.

[0040] In the description of this application, it should be understood that for the description of directions, such as the directions or positional relationships indicated by "above", "below", "left", "right", "front", "rear", etc., are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation to this application.

[0041] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0042] In the description of this application, it should be noted that unless otherwise clearly defined, terms such as "set", "installed", and "connected" should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in this application in combination with the specific content of the technical solution. In addition, the identification of specific steps hereinafter does not represent a limitation on the step sequence and execution logic. The execution sequence and execution logic between each step should be understood and inferred with reference to the content described in the embodiments.

[0043] During the operation of a nuclear power plant, the emergency generator, as a key backup power source, its reliability and performance are crucial.

[0044] According to nuclear safety regulations, the emergency generators of nuclear power units need to be tested regularly, including no-load tests, low-load tests, and full-power tests conducted during each refueling outage.

[0045] Currently, during the daily operation of nuclear power plants, the no-load tests and low-load tests of emergency generators are carried out in the way of load island operation. The full-power test, however, needs to be completed with the help of a mobile load platform during refueling shutdowns. This test arrangement and method meet the requirements of nuclear safety regulations to a certain extent.

[0046] However, in the related art, some problems have emerged during the actual application of the mobile load platform. Its reliability is relatively low and it is easily affected by external factors such as weather. During the recorded test process, internal operation failures have occurred in the mobile load device, which not only affects the smooth progress of the test, but may also pose a potential threat to the safe operation of the nuclear power plant. The existence of these problems makes it difficult for the full-power test method in the related art to meet the high-reliability requirements of the nuclear power plant for the emergency generator test. Therefore, how to test the emergency generator in a more reliable manner remains an urgent problem to be solved in the industry.

[0047] This application aims to solve at least one of the technical problems existing in the prior art. For this purpose, this application proposes a safety test device and test method for an emergency generator, an electronic device, and a medium, which can test the emergency generator in a more reliable manner.

[0048] Refer to Figure 1 , according to the safety test device for an emergency generator of an embodiment of this application, the safety test device is configured in a nuclear power plant mobile vehicle provided with a box body, the safety test device is installed inside the box body, and the safety test device includes a system-side incoming line cabinet module, a on-load tap-changer transformer module, a generator-side incoming line cabinet module, and a panel module;

[0049] The system-side incoming line cabinet module is used to access the nuclear power plant power consumption system of the target nuclear power plant to access electric energy from the nuclear power plant power consumption system;

[0050] The on-load tap-changer transformer module is arranged between the system-side incoming line cabinet module and the generator-side incoming line cabinet module to transmit the electric energy accessed by the nuclear power plant power consumption system;

[0051] The generator-side incoming line cabinet module is connected to the on-load tap-changer transformer module; wherein, the generator-side incoming line cabinet module is used to be connected to the emergency generator of the target nuclear power plant to perform grid connection operation on the electric energy transmitted by the on-load tap-changer transformer module and the electric energy generated by the emergency generator;

[0052] The panel module is used to execute safety test operations on the emergency generator by controlling the system-side incoming line cabinet module, the on-load tap-changer transformer module, and the generator-side incoming line cabinet module to obtain safety test data.

[0053] It should be noted that the emergency generator safety test device of the present application is installed inside the box body of the mobile vehicle in the nuclear power plant, and mainly includes a system-side incoming line cabinet module, a load tap-changing transformer module, a generator-side incoming line cabinet module, and a console module. Among them, the system-side incoming line cabinet module is used to access the nuclear power plant's power consumption system and obtain electrical energy from the nuclear power plant's power consumption system. The load tap-changing transformer module is arranged between the system-side incoming line cabinet module and the generator-side incoming line cabinet module, responsible for transmitting the electrical energy accessed by the nuclear power plant's power consumption system, and can adjust the voltage according to needs, and can also isolate the capacitive current of the cable in the system-side incoming line cabinet module. The generator-side incoming line cabinet module is connected to the load tap-changing transformer module and is used to connect to the emergency generator of the target nuclear power plant to perform grid connection operations on the electrical energy transmitted by the load tap-changing transformer module and the electrical energy generated by the emergency generator. The console module is used to perform safety test operations on the emergency generator by controlling each module and obtain safety test data.

[0054] In some embodiments provided by the present application, the console module may include a controller, a display, an input device, and an alarm.

[0055] Controller: As the core of the console module, it is connected to the key devices of each module such as the system-side incoming line cabinet, transformer, arc suppression coil, and generator-side incoming line cabinet through control cables, such as circuit breakers, on-load tap-changers, and tap changers of arc suppression coils. Receive control instructions from the input device, and send corresponding control signals to each device according to preset control logic and protection strategies to achieve precise control of the entire test device.

[0056] Display: Connected to the controller through a data cable, it receives and displays in real time monitoring data such as system current, voltage, power, transformer winding temperature, and switch status transmitted by the controller. Its display interface is carefully designed to intuitively present the operating status and parameter information of the system, facilitating operators to quickly understand and master the operating conditions of the system.

[0057] Input device: Connected to the controller through a data cable, operators can input various control instructions to the controller through the input device (such as a keyboard, touch screen, etc.), such as switch operations, parameter settings, voltage regulation control, etc. The input device is designed in line with ergonomic principles, with simple operation, ensuring that operators can send control instructions efficiently and accurately.

[0058] Alarm: Connected to the controller, when the controller detects a fault or abnormal situation in the system, such as overcurrent, overvoltage, too high transformer winding temperature, abnormal switch status, etc., it will immediately trigger the alarm to emit a sound and light alarm signal. The sound and light prompts of the alarm are clear and eye-catching, which can attract the attention of operators in time, so that they can quickly take corresponding measures to handle the fault and ensure the safe operation of the system.

[0059] When conducting a full-power test of the emergency generator, the working process of the device is as follows: First, the system-side incoming line cabinet module accesses the nuclear power plant's power consumption system to obtain electrical energy; then, the on-load tap-changer transformer module transmits the electrical energy to the generator-side incoming line cabinet module and can adjust the voltage as needed; next, the generator-side incoming line cabinet module is connected to the emergency generator to perform grid connection operations on the transmitted electrical energy and the electrical energy generated by the emergency generator; finally, the panel module controls each module to perform safety test operations and obtain safety test data. During the whole process, the integrated design of the device and the coordinated operation of each module ensure the smooth progress of the test and the accurate acquisition of data.

[0060] In the embodiments of the present application, through integrated design, each functional module is centrally installed inside the box body to form a complete and movable safety test device. This design effectively avoids the problem that the traditional mobile load platform is affected by the weather due to being exposed to the external environment, and improves the environmental adaptability and reliability of the safety test device. In addition, the close cooperation and optimized coordination between each functional module reduce the failure points, further improving the reliability of the safety test for the emergency generator.

[0061] Refer to Figure 2 , the safety test method for the emergency generator provided by the embodiments of the present application is applied to the safety test device of the embodiments of the present application. The safety test method for the emergency generator in the embodiments of the present application may include:

[0062] Step S201: Obtain a test start instruction and adjust the emergency generator of the target nuclear power plant to the operating state according to the test start instruction;

[0063] Step S202: Monitor the electrical energy transmitted by the on-load tap-changer transformer module to the generator-side incoming line cabinet module to obtain system power parameters;

[0064] Step S203: Monitor the electrical energy generated by the emergency generator in the operating state to obtain power generation parameters;

[0065] Step S204: In response to the system power parameters and the power generation parameters meeting the preset grid connection conditions, perform grid connection operations on the electrical energy transmitted by the on-load tap-changer transformer module and the electrical energy generated by the emergency generator;

[0066] Step S205: After performing the grid connection operation, control the system-side incoming line cabinet module, the on-load tap-changer transformer module, and the generator-side incoming line cabinet module to perform safety test operations on the emergency generator to obtain safety test data.

[0067] In some embodiments, in step S201, obtain a test start instruction and adjust the emergency generator of the target nuclear power plant to the operating state according to the test start instruction;

[0068] It should be noted that in some embodiments, the console module includes an input device, and the operator can input a test start instruction into the input device of the console module. Among them, the input device can be a keyboard, a touch screen or other human-computer interaction devices, and the operator issues an instruction to start the test according to the test plan and safety regulations. This instruction is then transmitted to the controller of the console module.

[0069] Next, the console module performs a series of operations according to the received test start instruction to adjust the emergency generator to the operating state. For example, start the engine of the emergency generator to make it reach a predetermined speed and operating temperature.

[0070] In some embodiments, during the start-up process of the emergency generator, the console module can coordinate multiple subsystems, such as the fuel supply system, the speed regulation system and the cooling system, to ensure the smooth start of the generator. In addition, the console module can also activate the automatic voltage regulator (AVR) of the emergency generator to ensure the stability of the generator output voltage. The AVR automatically adjusts the excitation current of the generator according to the preset voltage value, so that the output voltage quickly reaches and maintains within the specified range, and then automatically adjusts the fuel supply according to the load change to keep the generator speed stable, thus ensuring the stability of the output frequency.

[0071] Through the above steps, the emergency generator can be successfully adjusted to the operating state, preparing for subsequent power monitoring and grid connection operations.

[0072] In step S202 of some embodiments, the electric energy transmitted from the on-load tap-changer transformer module to the generator-side incoming line cabinet module is monitored to obtain system power parameters.

[0073] It should be noted that after the emergency generator is running, the electric energy transmitted from the on-load tap-changer transformer module to the generator-side incoming line cabinet module can be monitored in real time. Among them, the monitoring work can be completed by setting sensors and transformers on the transmission line between the system-side incoming line cabinet module and the generator-side incoming line cabinet module. These sensors and transformers can specifically include current transformers and voltage transformers, which can accurately measure the current and voltage values during the electric energy transmission process. The current transformer is connected in series on the cable for transmitting electric energy, and converts the high current into a low current signal in proportion for easy measurement and control; the voltage transformer is connected in parallel at both ends of the cable and converts the high voltage into a low voltage signal in proportion.

[0074] It should be understood that these monitored signals are transmitted to the controller of the panel module. Inside the controller, there is a dedicated data acquisition and processing unit that can sample and process these signals with high precision and high frequency. Through data processing algorithms, the controller can calculate system power parameters including current, voltage, power, power factor, and frequency. These system power parameters not only reflect the real-time state of power transmission but also provide the necessary data support for subsequent grid connection operations.

[0075] In step S203 of some embodiments, the electric energy generated by the emergency generator in the operating state is monitored to obtain power generation parameters.

[0076] It should be noted that the embodiments of the present application can also monitor the electric energy generated by the emergency generator in the operating state. Among them, when the emergency generator generates electric energy in the operating state, the monitoring work can be completed by sensors and transformers installed in the incoming line cabinet module on the generator side. These devices can include current transformers, voltage transformers, and wattmeters, etc., which can accurately measure parameters such as current, voltage, and power output by the generator. The current transformer is connected in series on the generator output cable and converts the high current into a low current signal in proportion; the voltage transformer is connected in parallel at both ends of the cable and converts the high voltage into a low voltage signal in proportion; the wattmeter calculates the power value by collecting current and voltage signals.

[0077] It should be understood that these converted signals are transmitted to the controller of the panel module. The data acquisition and processing unit inside the controller samples and processes these signals with high precision and high frequency. Through data processing algorithms, the controller can calculate power generation parameters including current, voltage, power, frequency, and power factor. These parameters not only reflect the output performance of the emergency generator but also provide the necessary data support for subsequent grid connection operations and safety assessments.

[0078] In step S204 of some embodiments, in response to the system power parameters and power generation parameters meeting the preset grid connection conditions, grid connection operations are performed on the electric energy transmitted from the on-load tap-changer transformer module and the electric energy generated by the emergency generator.

[0079] It should be noted that the premise of the grid connection operation is that the system power parameters and power generation parameters meet the preset grid connection conditions. The system power parameters include voltage, frequency, phase, etc. of the electric energy transmitted from the on-load tap-changer transformer module to the incoming line cabinet module on the generator side; the power generation parameters include voltage, frequency, phase, etc. of the electric energy generated by the emergency generator in the operating state. It should be clear that the system power parameters and power generation parameters need to be accurately matched before grid connection to ensure the smooth progress of the grid connection operation and the stable operation of the system.

[0080] In some embodiments, when the system power parameters and the power generation parameters meet the grid connection conditions, the controller of the console module can issue a grid connection command. This grid connection command is transmitted to the generator side incoming switchgear module through a control cable to trigger the grid connection operation. The specific process of the grid connection operation can include the following aspects:

[0081] Synchronization detection: Real-time monitor the system power parameters and the power generation parameters to ensure that the two are synchronized in terms of voltage, frequency, and phase. High-precision sensors and transformers are used to obtain these system power parameters and power generation parameters, and precise comparison and adjustment are carried out.

[0082] Circuit breaker control: The controller controls the closing of the circuit breaker in the generator side incoming switchgear according to the results of the synchronization detection. The closing of the circuit breaker realizes the connection between the emergency generator and the nuclear power plant's power consumption system, enabling electric energy to be transmitted from the emergency generator to the nuclear power plant's power consumption system.

[0083] Electric energy transmission: After the grid connection operation is completed, the electric energy generated by the emergency generator is transmitted to the nuclear power plant's power consumption system through the generator side incoming switchgear module, the on-load tap-changer transformer module, and the system side incoming switchgear module. The on-load tap-changer transformer module plays a key role in electric energy transmission and voltage adjustment in this process to ensure the power quality and system stability.

[0084] Refer to Figure 3 , according to some embodiments of the present application, in response to the system power parameters and the power generation parameters meeting the preset grid connection conditions, the grid connection operation for the electric energy transmitted by the on-load tap-changer transformer module and the electric energy generated by the emergency generator may include:

[0085] Step S301, perform a voltage value comparison based on the system power parameters and the power generation parameters to obtain a voltage value comparison result;

[0086] Step S302, perform a frequency comparison based on the system power parameters and the power generation parameters to obtain a frequency comparison result;

[0087] Step S303, perform a phase comparison based on the system power parameters and the power generation parameters to obtain a phase comparison result;

[0088] Step S304, in response to the voltage value comparison result meeting the preset voltage value comparison condition, the frequency comparison result meeting the preset frequency comparison condition, and the phase comparison result meeting the preset phase comparison condition, determine that the system power parameters and the power generation parameters meet the preset grid connection conditions, and perform a grid connection operation on the electric energy transmitted by the on-load tap-changer transformer module and the electric energy generated by the emergency generator.

[0089] In some embodiments, the grid connection operation is performed when the system power parameters and the power generation parameters meet the preset grid connection conditions. This process ensures that the electric energy of the emergency generator can be safely and stably connected to the power consumption system of the nuclear power plant.

[0090] First, the embodiment of the present application compares the voltage values based on the system power parameters and the power generation parameters to obtain a voltage value comparison result. This process is completed by the synchronization grid connection device, which monitors the voltage values of the electric energy transmitted by the on-load tap-changer transformer module and the electric energy generated by the emergency generator in real time. Through high-precision voltage transformers, the synchronization grid connection device obtains these voltage values and makes an accurate comparison. If the voltage values of the two are within the preset error range, for example, within ±5%, then the voltage value comparison result meets the preset voltage value comparison condition.

[0091] Next, the embodiment of the present application compares the frequencies based on the system power parameters and the power generation parameters to obtain a frequency comparison result. This is also completed by the synchronization grid connection device, which monitors the frequency values of the two. Through high-precision frequency sensors, the synchronization grid connection device obtains these frequency values and makes a comparison. If the frequency values of the two are within the preset error range, for example, within ±0.5 Hz, then the frequency comparison result meets the preset frequency comparison condition.

[0092] Then, the embodiment of the present application compares the phases based on the system power parameters and the power generation parameters to obtain a phase comparison result. This process is also completed by the synchronization grid connection device, which monitors the phase angles of the two. Through high-precision phase sensors, the synchronization grid connection device obtains these phase angles and makes a comparison. If the phase angles of the two are within the preset error range, for example, within ±10 degrees, then the phase comparison result meets the preset phase comparison condition.

[0093] When the voltage value comparison result, the frequency comparison result, and the phase comparison result all meet their respective preset comparison conditions, it can be determined that the system power parameters and the power generation parameters meet the preset grid connection conditions. At this time, the controller of the panel module issues a grid connection command, which is transmitted to the generator side incoming switchgear module through the control cable to trigger the grid connection operation. The specific process of the grid connection operation includes the precise control of the synchronization grid connection device and the closing of the circuit breaker, ensuring the connection between the emergency generator and the power consumption system of the nuclear power plant, so that the electric energy can be transmitted from the emergency generator to the power consumption system of the nuclear power plant.

[0094] Through the precise comparison of the system power parameters and the power generation parameters, it is ensured that the electric energy of the emergency generator can be safely and stably connected to the power consumption system of the nuclear power plant. This process not only verifies the performance of the emergency generator but also provides a strong guarantee for the safe operation of the nuclear power plant.

[0095] It should be understood that the grid connection operation in step S204 is the core link in the emergency generator safety test method. Through precise parameter matching and control, it ensures that the electric energy of the emergency generator can be safely and stably connected to the nuclear power plant's power consumption system. This process not only verifies the performance of the emergency generator but also provides a strong guarantee for the safe operation of the nuclear power plant.

[0096] In step S205 of some embodiments, after the grid connection operation, the control system side incoming line cabinet module, the on-load tap-changer transformer module, and the generator side incoming line cabinet module perform safety test operations on the emergency generator to obtain safety test data.

[0097] It should be noted that after the grid connection operation is successful, the console module, as the command center of the entire safety test method, begins to coordinate the work of the system side incoming line cabinet module, the on-load tap-changer transformer module, and the generator side incoming line cabinet module. The console module sends precise control instructions to each module according to the preset test procedures and safety standards.

[0098] In some embodiments, performing the safety test operation may include:

[0099] The console module adjusts the input electric energy of the system side incoming line cabinet module to ensure a stable electric energy supply from the nuclear power plant's power consumption system. This includes adjusting the input voltage and current to match the operating requirements of the emergency generator.

[0100] The console module precisely adjusts the output voltage by controlling the tap position of the on-load tap-changer transformer module according to the real-time monitored system power parameters to ensure the stability of the power quality.

[0101] The console module manages the output of the generator side incoming line cabinet module to ensure that the electric energy generated by the emergency generator can be smoothly transmitted to the plant's power consumption system. This includes adjusting the output current and voltage, as well as monitoring the operating status of the generator.

[0102] It should be noted that the safety test operations may include, but are not limited to, load testing, stability testing, and protection function testing. In some more specific embodiments, load testing refers to testing the performance of the emergency generator under different load conditions by gradually increasing and decreasing the load. Monitor parameters such as its output power, current, voltage, and frequency to ensure stable operation under various loads. Stability testing refers to testing the dynamic response ability and stability of the emergency generator by simulating different operating conditions, such as sudden load addition and sudden load reduction, when the emergency generator is operating at full power. Record data such as voltage fluctuations and frequency changes of the generator under these conditions to evaluate its anti-interference ability and stability. Protection function testing refers to verifying whether various protection functions of the emergency generator are working properly, such as overload protection, short-circuit protection, temperature protection, etc. By simulating fault conditions, check whether the protection device can act in a timely manner to cut off the circuit and protect the safety of equipment and personnel.

[0103] During the safety test operations, embodiments of the present application can collect and record a large amount of safety test data in real time through various detection devices or sensors. Among them, these safety test data can specifically include parameters such as the output current, voltage, power, frequency, and temperature of the emergency generator, as well as information such as the operating status and response time of each module.

[0104] It should be understood that in step S205, through the coordinated control of the system-side incoming line cabinet module, on-load tap-changer transformer module, and generator-side incoming line cabinet module, a comprehensive safety test operation is carried out on the emergency generator, and detailed safety test data is obtained. This process not only verifies the performance and safety of the emergency generator under actual operating conditions but also provides a strong guarantee for the reliable operation of the emergency power supply system of the nuclear power plant.

[0105] Refer to Figure 4 , according to some embodiments of the present application, an arc suppression coil is provided in the on-load tap-changer transformer module. One end of the arc suppression coil is connected to the transformer neutral point of the on-load tap-changer transformer module, and the other end of the arc suppression coil is grounded.

[0106] It should be noted that the arc suppression coil is an inductive device. One end of it is connected to the neutral point of the on-load tap-changer transformer, and the other end is grounded. This connection method enables the arc suppression coil to effectively compensate the capacitive current in the system. When the emergency generator is connected to the nuclear power plant power consumption system through the test device, capacitive current will be generated in the cable line. Especially in long cable lines, the capacitive current may be relatively large. The arc suppression coil can effectively cancel the capacitive current by providing an inductive current opposite to the capacitive current, thereby reducing the residual current in the cable.

[0107] During the test of the emergency generator, when the electric energy generated by the generator is transmitted through the on-load tap-changing transformer module, the arc suppression coil starts to function. Specifically, the arc suppression coil can automatically measure the capacitive current from the transformer to the nuclear power plant's power consumption system and automatically adjust the magnitude of its inductive current according to the measurement results. This adjustment is achieved by changing the tap position of the arc suppression coil, so that the inductive current cancels out the capacitive current, reaching a state of over-compensation or under-compensation operation. In this way, the residual current in the system is limited within a safe range, avoiding arc problems caused by excessive capacitive current and protecting the safe and stable operation of the emergency generator and the nuclear power plant's power consumption system.

[0108] According to some embodiments of the present application, the system-side incoming line cabinet module includes a first circuit breaker, a system-side cable, and a first current transformer, and the first current transformer is arranged on the system-side cable; wherein, the first circuit breaker is used to be controlled by the panel module to perform a conduction operation or a cutoff operation on the system-side incoming line cabinet module, and the first current transformer is used to monitor in real time the value of the first cable current flowing through the system-side cable and transmit the value of the first cable current to the panel module.

[0109] It should be noted that the first circuit breaker in the system-side incoming line cabinet module is the key control component of this module. It is controlled by the panel module and can perform a conduction operation or a cutoff operation on the system-side incoming line cabinet module. When it is necessary to connect the emergency generator to the nuclear power plant's power consumption system for a safety test, the controller of the panel module can send a signal to the first circuit breaker to make it closed, thus realizing the conduction of electric energy. On the contrary, when the test is over or a fault occurs, the controller can send a signal to make the first circuit breaker open, cutting off the power supply to ensure the safety of the system. It should be understood that the system-side cable is the physical medium connecting the nuclear power plant's power consumption system and the test device and is responsible for transmitting electric energy. To ensure the stability and safety of electric energy transmission, the system-side cable needs to have sufficient current-carrying capacity and insulation performance to adapt to the high voltage and large current environment of the nuclear power plant's power consumption system.

[0110] It should be pointed out that the first current transformer is arranged on the system-side cable, and its main function is to monitor in real time the value of the first cable current flowing through the system-side cable. The current transformer converts the high current into a low current signal in proportion, and this signal can be safely collected and processed by the controller of the panel module. In this way, the first current transformer provides important information about the power transmission state for the panel module, enabling the operator to understand the flow of electric energy in real time.

[0111] The system-side incoming line cabinet module realizes the safe access and real-time monitoring of the electric energy of the nuclear power plant's power consumption system through the first circuit breaker, system-side cable, and first current transformer it contains. The design and function of this module ensure the stability and safety of the emergency generator safety test device when it is connected to the nuclear power plant's power consumption system, providing a reliable basis for subsequent test operations.

[0112] According to some embodiments of the present application, the generator-side incoming line cabinet module includes a second circuit breaker, a generator-side cable, and a second current transformer. The second current transformer is arranged on the generator-side cable. Among them, the second circuit breaker is used to be controlled by the console module to perform a conduction operation or a shutdown operation on the generator-side incoming line cabinet module. The second current transformer is used to real-time monitor the second cable current value flowing through the generator-side cable and transmit the second cable current value to the console module.

[0113] According to some embodiments of the present application, the generator-side incoming line cabinet module further includes a voltage transformer. The voltage transformer is connected between the second current transformer and the generator-side incoming line cabinet module. The voltage transformer is used to real-time monitor the cable voltage value of the generator-side cable.

[0114] It should be noted that the second circuit breaker in the generator-side incoming line cabinet module is the key control element of this module. It is controlled by the console module and can perform a conduction operation or a shutdown operation on the generator-side incoming line cabinet module. When it is necessary to connect the emergency generator to the test device for testing, the controller of the console module can send a signal to the second circuit breaker to make it close, thereby realizing the conduction of electric energy. On the contrary, when the test is over or a fault occurs, the controller can send a signal to make the second circuit breaker open, cutting off the power supply to ensure the safety of the system. It should be understood that the generator-side cable is the physical medium connecting the emergency generator and the test device and is responsible for transmitting electric energy. To ensure the stability and safety of electric energy transmission, the generator-side cable needs to have sufficient current-carrying capacity and insulation performance to adapt to the high-power output of the emergency generator.

[0115] The second current transformer is arranged on the generator-side cable. Its main function is to real-time monitor the second cable current value flowing through the generator-side cable. The current transformer converts the high current into a low current signal in proportion, and this signal can be safely collected and processed by the controller of the console module. In this way, the second current transformer provides important information about the output current of the emergency generator for the console module, enabling the operator to understand the operating state of the generator in real time.

[0116] Refer to Figure 5 , which shows the connection and cooperation relationship between the functional modules in the test device of the present application.

[0117] According to some embodiments provided by the present application, the system-side incoming line cabinet module is the interface between the test device and the plant power system of the nuclear power plant, and is responsible for introducing the electric energy in the plant power system into the test device. It includes a first circuit breaker, a system-side cable, and a first current transformer. The first circuit breaker is controlled by the console module and can perform conduction or shutdown operations to achieve the access or cut-off of electric energy. The system-side cable is responsible for transmitting electric energy, while the first current transformer monitors the current value flowing through the cable in real time and transmits the data to the console module, providing a basis for the detection and protection during the test process.

[0118] According to some embodiments provided by the present application, the generator-side incoming line cabinet module is the interface between the test device and the emergency diesel generator, and is responsible for connecting the electric energy generated by the generator to the test device. It includes a second circuit breaker, a generator-side cable, a second current transformer, and a voltage transformer. The second circuit breaker is also controlled by the console module and can perform conduction or shutdown operations. The generator-side cable is responsible for transmitting the electric energy generated by the generator. The second current transformer and the voltage transformer respectively monitor the current and voltage values flowing through the cable in real time and transmit these data to the console module for precise control and monitoring of the operating state of the generator.

[0119] According to some embodiments provided by the present application, the on-load tap-changer transformer module is located between the system-side incoming line cabinet module and the generator-side incoming line cabinet module and is responsible for transmitting and adjusting electric energy. It can adjust the output voltage according to the predetermined requirements to ensure the power quality and system stability. The on-load tap-changer transformer module is connected to the console module, and the console module can control the tap position of the on-load tap-changer transformer module according to the real-time monitored system power parameters and generation parameters to achieve precise voltage adjustment.

[0120] According to some embodiments provided by the present application, the arc suppression coil is connected between the neutral point of the on-load tap-changer transformer module and the ground, and is used to compensate the capacitive current in the system, reduce the arc risk, and protect the equipment safety. The arc suppression coil control module is connected to the console module, and the console module can adjust the parameters of the arc suppression coil according to the real-time monitored data to ensure the safe and stable operation of the equipment.

[0121] According to some embodiments provided by the present application, the console module is the core control center of the entire test device and is responsible for coordinating and controlling the operations of all other modules. It receives real-time data from the system-side incoming line cabinet module, the generator-side incoming line cabinet module, the on-load tap-changer transformer module, and the arc suppression coil control module, such as current, voltage, power, etc., and sends corresponding control instructions according to the preset control logic and protection strategy. The console module also has a human-machine interaction function. The operator can send control instructions through the input device, monitor the operating state of the test process in real time, and receive alarm signals in case of abnormalities.

[0122] According to some embodiments of the present application, the safety test device further includes a transformer protection device, which is connected to the system-side incoming line cabinet module, the on-load tap-changer transformer module, and the generator-side incoming line cabinet module. Among them, the transformer protection device is connected to the on-load tap-changer transformer module and is responsible for monitoring the operating status of the transformer, such as temperature, oil level, etc., and taking protection measures, such as cutting off the power supply, in case of abnormalities to prevent equipment damage and safety accidents.

[0123] According to some embodiments provided by the present application, the synchronization and grid connection device is connected to the generator-side incoming line cabinet module and is responsible for performing synchronization detection on the output electric energy of the emergency diesel generator and the electric energy transmitted by the system-side incoming line cabinet module before the grid connection operation. It ensures that the two are synchronized in voltage, frequency, and phase, providing guarantee for safe grid connection.

[0124] According to some embodiments provided by the present application, the power supply, air conditioner, and cable reel module provide necessary auxiliary support for the entire test device. The power supply part ensures the power supply of the device; the air conditioner part is responsible for maintaining the temperature and humidity inside the device to ensure that the equipment operates in a suitable environment; the cable reel part is used for storing and managing various cables to ensure the cleanliness and safety of the device.

[0125] Through the close cooperation of the above-mentioned modules and the unified control of the panel module, the test device for the emergency generator according to the present application can safely and reliably complete the full-power test of the emergency diesel generator, providing strong guarantee for the safe operation of the nuclear power plant.

[0126] Refer to Figure 6 , Figure 6 illustrates the hardware structure of an electronic device in another embodiment. The electronic device may include:

[0127] A processor 601, which can be implemented in ways such as a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided by the embodiments of the present application;

[0128] The memory 602 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM), etc. The memory 602 can store an operating system and other application programs. When implementing the technical solutions provided in the embodiments of this specification through software or firmware, the relevant program codes are stored in the memory 602, and the processor 601 is used to call and execute the security test method of the embodiments of this application;

[0129] The input / output interface 603 is used to implement information input and output;

[0130] The communication interface 604 is used to implement communication and interaction between this device and other devices. It can achieve communication through wired means (such as USB, network cable, etc.), or can also achieve communication through wireless means (such as mobile network, WI-FI, Bluetooth, etc.);

[0131] The bus 605 transmits information between the various components of the device (such as the processor 601, the memory 602, the input / output interface 603, and the communication interface 604);

[0132] Among them, the processor 601, the memory 602, the input / output interface 603, and the communication interface 604 achieve communication connections with each other inside the device through the bus 605.

[0133] The embodiments of this application also provide a computer program product, which includes a computer program. The processor of the computer device reads and executes this computer program, so that the computer device executes to implement the above-mentioned security test method.

[0134] Terms such as "first", "second", "third", "fourth", etc. (if any) in the specification of this disclosure and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances, so that the embodiments of this disclosure described here can be implemented in an order other than those illustrated or described here. In addition, the terms "include" and "contain" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0135] It should be understood that in this disclosure, "at least one (item)" means one or more, and "a plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can mean: only A exists, only B exists, and both A and B exist at the same time. Among them, A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one (one) of the following" or its similar expressions refer to any combination of these items, including any combination of single items (ones) or plural items (ones). For example, at least one (one) of a, b, or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0136] It should be understood that in the description of the embodiments of this application, the meaning of a plurality (or multiple items) is more than two. Understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number.

[0137] In several embodiments provided in this disclosure, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of units is only a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be through some interfaces, and the indirect coupling or communication connection of devices or units can be in electrical, mechanical, or other forms.

[0138] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place, or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0139] In addition, the functional units in each embodiment of this disclosure can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0140] When an integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present disclosure, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present disclosure. The aforementioned storage medium can include various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks, or optical discs, etc.

[0141] It should also be understood that the various embodiments provided in the embodiments of the present application can be combined arbitrarily to achieve different technical effects.

[0142] The above is a specific description of the embodiments of the present disclosure, but the present disclosure is not limited to the above embodiments. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the present disclosure, and these equivalent deformations or substitutions are all included within the scope defined by the claims of the present disclosure.

Claims

1. A safety test device for an emergency generator, characterized in that: The safety test device is configured on a mobile carrier of a nuclear power plant provided with a box, the safety test device is installed inside the box, and the safety test device includes a system side incoming cabinet module, an on-load tap-changing transformer module, a generator side incoming cabinet module, and a panel module; The system-side incoming line cabinet module is used to access the nuclear power plant power system of the target nuclear power plant to access electric energy from the nuclear power plant power system; The on-load voltage-changing transformer module is arranged between the system-side incoming cabinet module and the generator-side incoming cabinet module to transmit the electric energy connected to the power system of the nuclear power plant; The generator side incoming cabinet module is connected to the on-load tap-changing transformer module; wherein the generator side incoming cabinet module is used to be connected to the emergency generator of the target nuclear power plant to perform grid-connected operation on the electric energy transmitted from the on-load tap-changing transformer module and the electric energy generated by the emergency generator; The panel module is used to perform safety test operations on the emergency generator and obtain safety test data by controlling the system side incoming cabinet module, the on-load tap-changing transformer module and the generator side incoming cabinet module.

2. The safety test device according to claim 1, characterized in that: The on-load tap-changing transformer module is provided with an arc-extinguishing coil, one end of the arc-extinguishing coil is connected to the transformer neutral point of the on-load tap-changing transformer module, and the other end of the arc-extinguishing coil is grounded.

3. The safety test device according to claim 1, characterized in that: The system side incoming line cabinet module includes a first circuit breaker, a system side cable and a first current transformer, wherein the first current transformer is arranged on the system side cable; wherein the first circuit breaker is used to be controlled by the panel module to perform a conduction operation or a shutdown operation on the system side incoming line cabinet module, and the first current transformer monitors the first cable current value flowing through the system side cable in real time, and transmits the first cable current value to the panel module.

4. The safety test device according to claim 1, characterized in that: The generator side incoming line cabinet module includes a second circuit breaker, a generator side cable and a second current transformer, and the second current transformer is arranged on the generator side cable; wherein, the second circuit breaker is used to be controlled by the panel module to perform a conduction operation or a shutdown operation on the generator side incoming line cabinet module, and the second current transformer monitors the second cable current value flowing through the generator side cable in real time, and transmits the second cable current value to the panel module.

5. The safety test device according to claim 4, characterized in that: The generator side incoming cable cabinet module also includes a voltage transformer, which is connected between the second current transformer and the generator side incoming cable cabinet module. The voltage transformer monitors the cable voltage value of the generator side cable in real time.

6. The safety test device according to claim 1, characterized in that: The safety test device also includes a transformer protection device, which is connected to the system side incoming cabinet module, the on-load tap-changing transformer module and the generator side incoming cabinet module.

7. A safety test method for an emergency generator, characterized in that: Applied to the safety test device according to any one of claims 1 to 6, the method comprises: Obtaining a test start instruction, and adjusting the emergency generator of the target nuclear power plant to an operating state according to the test start instruction; Monitor the electric energy transmitted from the on-load tap-changing transformer module to the generator side incoming cabinet module to obtain the system power parameters; Monitoring the electric energy generated by the emergency generator in operation to obtain power generation parameters; In response to the system power parameters and the power generation parameters satisfying the preset grid connection conditions, the electric energy transmitted by the on-load tap-changing transformer module and the electric energy generated by the emergency generator are connected to the grid; After the grid-connected operation is performed, the system-side incoming cabinet module, the on-load tap-changing transformer module, and the generator-side incoming cabinet module are controlled to perform a safety test operation on the emergency generator to obtain safety test data.

8. The method according to claim 7, characterized in that In response to the system power parameter and the power generation parameter satisfying the preset grid connection condition, the power energy transmitted by the on-load tap-changing transformer module and the power energy generated by the emergency generator are connected to the grid, including: Comparing voltage values ​​based on the system power parameters and the power generation parameters to obtain a voltage value comparison result; Performing frequency comparison based on the system power parameter and the power generation parameter to obtain a frequency comparison result; Performing phase comparison based on the system power parameter and the power generation parameter to obtain a phase comparison result; In response to the voltage value comparison result satisfying the preset voltage value comparison condition, the frequency comparison result satisfying the preset frequency comparison condition and the phase comparison result satisfying the preset phase comparison condition, it is determined that the system power parameters and the power generation parameters satisfy the preset grid-connected conditions, and the electric energy transmitted by the on-load tap-changing transformer module and the electric energy generated by the emergency generator are connected to the grid.

9. An electronic device, characterized in that: include: A memory and a processor, wherein the memory stores a computer program, and the processor implements the safety test method according to any one of claims 7 to 8 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The storage medium stores a program, and the program is executed by a processor to implement the safety test method according to any one of claims 7 to 8.

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