Fault detection device for speed regulating system of nuclear power emergency diesel generating set
By designing a fault detection device for the speed regulation system of a nuclear power emergency diesel generator set, the operating status of the generator set is simulated and monitored by components such as inverters, speed sensors and oscilloscopes, the defects that require common sense of load operation in the existing technology are solved, and safe and efficient fault detection is achieved.
Patent Information
- Application Number
- CN202421862098.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-02
AI Technical Summary
The existing fault detection method of the speed regulation system of nuclear power emergency diesel generator sets requires the operation of nuclear power emergency diesel generator sets with load, resulting in unstable output power or speed, and there is a risk of overpower or overspeed operation, which may lead to damage to the generator set.
A fault detection device for speed regulation system of nuclear power emergency diesel generator sets is designed, and the motor operation is controlled by configuring the inverter to simulate various operating states; the motor speed is collected using the speed sensor to be used as the input signal of the electronic speed regulator to be tested; the output signal of the electronic speed regulator to be tested is monitored through the oscilloscope to detect its fault; at the same time, the operating state of the mechanical actuator to be tested is monitored through the actuator output dial to realize its fault detection.
It realizes the failure detection of the speed control system without causing damage to the nuclear power emergency diesel generator set, which improves the accuracy and safety of fault detection.
Smart Images
Figure CN222913133U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of generator fault detection, and particularly to a fault detection device for the speed regulation system of a nuclear power emergency diesel generator set. Background Art
[0002] As an important device to ensure the safe operation of a nuclear power plant, the operation stability and rapid response ability of a nuclear power emergency diesel generator set directly affect the operation reliability of the nuclear power plant. And the device that directly affects the operation stability and rapid response ability is the speed regulation system of the nuclear power emergency diesel generator set. The existing speed regulation system consists of an electronic speed governor and a mechanical actuator. During operation, the electronic speed governor sends a control signal to the mechanical actuator according to the speed or output power of the nuclear power emergency diesel generator set so that the mechanical actuator controls the throttle opening of the diesel generator set, thereby realizing the feedback regulation of the speed and output power of the nuclear power emergency diesel generator set.
[0003] Due to the occasional occurrence of faults in the speed regulation system, the existing fault detection methods for the speed regulation system mostly involve the long-term operation of the nuclear power emergency diesel generator set with load, and the fault points are checked by manually intervening in the speed regulation system. However, manually intervening in the speed regulation system will inevitably cause a change in the operating state of the nuclear power emergency diesel generator set, resulting in unstable output power or speed, thereby causing the risk of over-power or over-speed operation of the nuclear power emergency diesel generator set, and further leading to the damage of the nuclear power emergency diesel generator set. Therefore, how to achieve the fault detection of the speed regulation system without causing damage to the nuclear power emergency diesel generator set has become an urgent problem to be solved. Summary of the Utility Model
[0004] In view of the above problems, this application provides a fault detection device for the speed regulation system of a nuclear power emergency diesel generator set to achieve the purpose of fault detection of the speed regulation system without the need for the nuclear power emergency diesel generator set to operate with load for a long time. The specific solution is as follows:
[0005] The first aspect of this application provides a fault detection device for the speed regulation system of a nuclear power emergency diesel generator set, including:
[0006] a motor, an inverter, an oscilloscope, an actuator output dial, a speed sensor, and a power supply,
[0007] The output end of the electronic speed governor to be tested is electrically connected to the input end of the mechanical actuator to be tested. The mechanical actuator to be tested is mechanically connected to the actuator output dial. The signal output end of the frequency converter is electrically connected to the controller of the motor. The output end of the rotational speed sensor is electrically connected to the input end of the electronic speed governor to be tested. The oscilloscope is electrically connected to the output end of the electronic speed governor to be tested. The power supply is electrically connected to the motor, the frequency converter, the oscilloscope, and the rotational speed sensor respectively. The rotational speed sensor is used to collect the rotational speed of the motor.
[0008] In a possible implementation, the fault detection device for the speed regulation system of the nuclear power emergency diesel generator set further includes:
[0009] A first switching switch, the first switching switch includes a plurality of input ends and one output end. The first input end of the first switching switch is electrically connected to the output end of the electronic speed governor to be tested, and the output end of the first switching switch is electrically connected to the input end of the mechanical actuator to be tested.
[0010] In a possible implementation, the fault detection device for the speed regulation system of the nuclear power emergency diesel generator set further includes:
[0011] A constant current source, the output end of the constant current source is electrically connected to the second input end of the first switching switch.
[0012] In a possible implementation, the fault detection device for the speed regulation system of the nuclear power emergency diesel generator set further includes:
[0013] A first pulse width modulator, the first pulse width modulator is electrically connected to the third input end of the first switching switch.
[0014] In a possible implementation, the fault detection device for the speed regulation system of the nuclear power emergency diesel generator set further includes:
[0015] An insurance device, the first end of the insurance device is electrically connected to the output end of the switching switch, and the second end of the insurance device is electrically connected to the input end of the mechanical actuator to be tested.
[0016] In a possible implementation, the fault detection device for the speed regulation system of the nuclear power emergency diesel generator set further includes:
[0017] An ammeter, the first end of the ammeter is electrically connected to the output end of the first switching switch, and the second end of the ammeter is electrically connected to the input end of the mechanical actuator to be tested.
[0018] In a possible implementation, the fault detection device for the speed regulation system of the nuclear power emergency diesel generator set further includes:
[0019] A tachometer, the tachometer being electrically connected to the first pulse width modulator.
[0020] In a possible implementation, the nuclear power emergency diesel generator set speed regulation system fault detection device further includes:
[0021] A second switching switch, the second switching switch including a plurality of input terminals and an output terminal, the output terminal of the second switching switch being electrically connected to the input terminal of the electronic speed governor to be tested, and the output terminal of the speed sensor being electrically connected to the first input terminal of the second switching switch.
[0022] In a possible implementation, the nuclear power emergency diesel generator set speed regulation system fault detection device further includes:
[0023] A second pulse width modulator, the second pulse width modulator being electrically connected to the second input terminal of the second switching switch.
[0024] In a possible implementation, the power supply includes:
[0025] A first power supply and a second power supply, the voltages of the first power supply and the second power supply being different.
[0026] By means of the above technical solution, a nuclear power emergency diesel generator set speed regulation system fault detection device provided by the present application electrically connects the signal output terminal of the frequency converter to the controller of the motor, so as to control the operation of the motor by using the frequency converter to simulate various operating states of the nuclear power diesel generator set. Subsequently, by configuring the rotational speed of the motor collected by the speed sensor as an input signal provided to the electronic speed governor to be tested, the simulation of the real operating state of the electronic speed governor to be tested is realized. At the same time, by configuring the oscilloscope to be electrically connected to the output terminal of the electronic speed governor to be tested, the monitoring of the output signal of the electronic speed governor to be tested is realized, so as to perform fault detection on the electronic speed governor to be tested according to the monitored output signal. And, by configuring an actuator output dial mechanically connected to the mechanical actuator to be tested, the monitoring of the operating state of the mechanical actuator to be tested is realized, and further the fault detection and analysis of the mechanical actuator to be tested are realized. It can be seen that the present application realizes the fault detection of the speed regulation system without the need for the nuclear power emergency diesel generator set to operate under load. Description of the Drawings
[0027] Combined with the drawings and referring to the following specific embodiments, the above and other features, advantages and aspects of the various embodiments of the present disclosure will become more obvious. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the original components and elements are not necessarily drawn to scale.
[0028] Figure 1Structural schematic diagram of a fault detection device for the speed regulation system of a nuclear power emergency diesel generator set provided by this application;
[0029] Figure 2 Structural schematic diagram of an actuator output dial provided by this application;
[0030] Figure 3 Structural schematic diagram of a fault detection device for the speed regulation system of a nuclear power emergency diesel generator set provided by a possible implementation of this application. Detailed implementation manners
[0031] The embodiments of this application will be described below with reference to the accompanying drawings in the embodiments of this application. The terms used in the embodiment part of this application are only used to explain the specific embodiments of this application, rather than intended to limit this application.
[0032] The embodiments of this application will be described below with reference to the accompanying drawings. Those of ordinary skill in the art will know that with the development of technology and the emergence of new scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.
[0033] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned accompanying drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances, which is only a way of distinguishing when describing objects with the same attributes in the embodiments of this application. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion, so that a process, method, system, product or device including a series of units does not have to be limited to those units, but may include other units not clearly listed or inherent to these process, method, product or device.
[0034] The first aspect of this application provides a fault detection device for the speed regulation system of a nuclear power emergency diesel generator set, as Figure 1 shown, including:
[0035] a motor 101, an inverter 102, an oscilloscope 103, an actuator output dial 104, a speed sensor 105, and a power supply 106,
[0036] The output end of the electronic speed governor to be tested is electrically connected to the input end of the mechanical actuator to be tested. The mechanical actuator to be tested is mechanically connected to the actuator output dial 104. The signal output end of the frequency converter 102 is electrically connected to the controller of the motor 101. The output end of the speed sensor 105 is electrically connected to the input end of the electronic speed governor to be tested. The oscilloscope 103 is electrically connected to the output end of the electronic speed governor to be tested. The power supply 106 is electrically connected to the motor 101, the frequency converter 102, the oscilloscope 103, and the speed sensor 105 respectively. The speed sensor 105 is used to collect the speed of the motor 101.
[0037] It should be noted that in the actual application scenario, the above-mentioned electronic speed governor to be tested and the above-mentioned mechanical actuator to be tested can be the equipment removed from the speed control system of the nuclear power emergency diesel generator set to be fault-detected. By configuring the output end of the electronic speed governor to be tested to be electrically connected to the input end of the mechanical actuator to be tested, the process of the mechanical actuator to be tested acting according to the output signal of the electronic speed governor to be tested under real operating conditions can be simulated.
[0038] It should be noted that in the actual application scenario, the above-mentioned actuator output dial 104 is a device used to represent the action angle of the mechanical actuator to be tested. By mechanically connecting the mechanical actuator to be tested to the actuator output dial 104, when the mechanical actuator to be tested acts in response to the output signal of the electronic speed governor to be tested, the pointer in the actuator output dial will rotate with the action mechanism of the mechanical actuator to be tested, so as to indicate the action angle of the action mechanism of the mechanical actuator to be tested, and then judge whether there is a fault in the action mechanism of the mechanical actuator to be tested, such as damage or abnormal stability, according to the indicated action angle.
[0039] In a possible implementation, the schematic structural diagram of the above-mentioned actuator output dial 104 can be as Figure 2 shown, including: a rotating shaft 201, a pointer 202, and a dial 203. Among them, the rotating shaft 201 is mechanically connected to the action mechanism of the mechanical actuator to be tested through a linkage rod. When the action mechanism of the mechanical actuator to be tested generates an action angle, the action rod will drive the rotating shaft 201 to rotate by a corresponding angle, and the pointer 202 will point to the corresponding angle of the dial 203 as the rotating shaft 201 rotates. At this time, by reading the angle pointed to by the pointer 202 on the dial 203, the action angle of the mechanical actuator to be tested can be obtained, and then the fault detection of the mechanical actuator to be tested can be carried out.
[0040] It should be noted that in the actual application scenario, the above-mentioned variable-frequency drive (VFD) 102 is a power control device that applies frequency conversion technology and microelectronics technology to control the motor by changing the frequency of the motor working power supply. In this application, by configuring the signal output terminal of the VFD 102 to be electrically connected to the controller of the motor 101, the operation state of the motor can be controlled by adjusting the VFD, thereby simulating the operation state of the nuclear power emergency diesel generator set in the real scenario and improving the accuracy of fault detection.
[0041] It should be noted that in the actual application scenario, there can be various types of the above-mentioned speed sensor 105, including but not limited to: magnetosensitive, laser, magnetoelectric, capacitive, variable reluctance, etc. In this application, by configuring the speed sensor 105 to collect the speed of the motor 101 and configuring the output terminal of the speed sensor 105 to be electrically connected to the input terminal of the electronic governor to be tested, the electronic governor to be tested can generate corresponding control signals according to the speed input by the speed sensor 105, realizing the simulation of the operation state of the electronic governor to be tested in the real scenario.
[0042] It should be noted that in the actual application scenario, in this application, by configuring the oscilloscope 103 to be electrically connected to the output terminal of the electronic governor to be tested, the oscilloscope 103 can be used to capture and display the control signals output by the electronic governor to be tested. Furthermore, by comparing the control signals output by the electronic governor to be tested with the control signals output by the fault-free electronic governor, the fault detection of the electronic governor to be tested can be realized.
[0043] In a possible implementation, the implementation method for stability fault detection of the speed control system can be: by setting the control frequency of the VFD 102 based on the speed ratio of the mechanical actuator speed to the diesel engine speed in the normal state, so that the motor 101 operates at the set speed. At this time, by comparing the control signals captured by the oscilloscope 103 output by the electronic governor to be tested with the control signals of the electronic governor to be tested in the above control frequency operation state in the normal state, and comparing the angle output by the actuator output dial 104 with the action angle of the actuator to be tested in the above control frequency operation state in the normal state, the stability fault detection of the speed control system can be realized. In the case where at least one comparison result is unsuccessful, it is determined that there is a stability fault in the speed control system, and the fault point can be determined through the comparison results.
[0044] It should be noted that in Figure 1 the shown structural schematic diagram, the dotted line is the power supply line of the power supply 106, and the solid line is the signal line.
[0045] In this application, the signal output terminal of the frequency converter is configured to be electrically connected to the controller of the motor, so as to control the operation of the motor by using the frequency converter to simulate various operating states of the nuclear power diesel generator set. Subsequently, the rotational speed of the motor collected by the configured rotational speed sensor is used as an input signal provided to the electronic governor to be tested, realizing the simulation of the actual operating state of the electronic governor to be tested. At the same time, by configuring the oscilloscope to be electrically connected to the output terminal of the electronic governor to be tested, the monitoring of the output signal of the electronic governor to be tested is realized, so as to perform fault detection on the electronic governor to be tested according to the monitored output signal. Moreover, by configuring the actuator output dial mechanically connected to the mechanical actuator to be tested, the monitoring of the operating state of the mechanical actuator to be tested is realized, and further the fault detection and analysis of the mechanical actuator to be tested are realized. It can be seen that this application realizes the fault detection of the speed regulation system without the need for the nuclear power emergency diesel generator set to operate under load.
[0046] In a possible implementation, the above-mentioned fault detection device for the speed regulation system of the nuclear power emergency diesel generator set as Figure 1 shown further includes:
[0047] A first switching switch, the first switching switch includes a plurality of input terminals and one output terminal. The first input terminal of the first switching switch is electrically connected to the output terminal of the electronic governor to be tested, and the output terminal of the first switching switch is electrically connected to the input terminal of the mechanical actuator to be tested.
[0048] In a possible implementation, the above-mentioned fault detection device for the speed regulation system of the nuclear power emergency diesel generator set as Figure 1 shown further includes:
[0049] A constant current source, the output terminal of the constant current source is electrically connected to the second input terminal of the first switching switch.
[0050] It should be noted that in the actual application scenario, the above-mentioned constant current source (Constant Current Source, CCS) is a power supply device that provides a high-precision stable current.
[0051] In a possible implementation, the above-mentioned fault detection device for the speed regulation system of the nuclear power emergency diesel generator set as Figure 1 shown further includes:
[0052] A first pulse width modulator, the first pulse width modulator is electrically connected to the third input terminal of the first switching switch.
[0053] It should be noted that in the actual application scenario, the above-mentioned first pulse width modulator (Pulse-Width Modulation, PWM) is a power supply device that adjusts the pulse width to provide various voltages and frequencies.
[0054] It should be noted that in actual application scenarios, one of the important factors leading to the occasional occurrence of faults in the speed regulation system is that due to internal structural faults of the mechanical actuator, abnormalities occur only at a certain rotational speed or frequency. Therefore, in this application, a first switching switch including multiple input terminals and one output terminal is configured, and multiple input terminals of the first switching switch are respectively electrically connected to a constant current source and a first pulse width modulator. Thus, through the operation of the first switching switch and by configuring the constant current source and the first pulse width controller to output different currents, voltages, or frequencies, the determination of the specific fault type of the mechanical actuator to be tested is realized without manually replacing the input power supply, improving the detection accuracy and efficiency of faults in the speed regulation system.
[0055] In a possible implementation, the above-mentioned Figure 1 fault detection device for the speed regulation system of a nuclear power emergency diesel generator set as shown in
[0056] also includes:
[0057] A fuse device, the first end of the fuse device is electrically connected to the output end of the switching switch, and the second end of the fuse device is electrically connected to the input end of the mechanical actuator to be tested.
[0058] In a possible implementation, the above-mentioned Figure 1 fault detection device for the speed regulation system of a nuclear power emergency diesel generator set as shown in
[0059] also includes:
[0060] An ammeter, the first end of the ammeter is electrically connected to the output end of the first switching switch, and the second end of the ammeter is electrically connected to the input end of the mechanical actuator to be tested.
[0061] A tachometer, the tachometer is electrically connected to the first pulse width modulator.
[0062] It should be noted that in actual application scenarios, in this application, by configuring the above-mentioned ammeter and tachometer, it is realized that it is convenient for the monitoring personnel to dynamically adjust and monitor the fault detection process through the ammeter and tachometer, thereby improving the fault detection accuracy.
[0063] In a possible implementation, as described above Figure 1 the fault detection device for the speed regulation system of the nuclear power emergency diesel generator set further includes:
[0064] A second switching switch, which includes multiple input terminals and one output terminal. The output terminal of the second switching switch is electrically connected to the input terminal of the electronic speed governor to be tested, and the output terminal of the speed sensor is electrically connected to the first input terminal of the second switching switch.
[0065] In a possible implementation, the fault detection device for the speed regulation system of the nuclear power emergency diesel generator set further includes:
[0066] A second pulse width modulator, which is electrically connected to the second input terminal of the second switching switch.
[0067] It should be noted that in the actual application scenario, due to the risk of incorrect feedback of input signals when there are errors or incompatibilities in the built-in program of the electronic speed governor to be tested. That is, when the electronic speed governor to be tested receives an input signal of a certain speed, due to incompatibility or built-in program errors, the control signal it outputs does not match the speed, resulting in stability faults in the speed regulation system. Therefore, in this application, by configuring the above-mentioned second switching switch and second pulse width modulator, when it is determined that there is a fault in the electronic speed governor to be tested, through the action of the second switching switch, the second pulse width modulator provides an input signal to the electronic speed governor to be tested. And by adjusting the second pulse width modulator to change the type of input signal, the detection of specific fault types of the electronic speed governor to be tested is realized, improving the fault detection accuracy.
[0068] In a possible implementation, the power supply includes:
[0069] A first power supply and a second power supply, and the voltages of the first power supply and the second power supply are different.
[0070] In a possible implementation, as described above Figure 1 the fault detection device for the speed regulation system of the nuclear power emergency diesel generator set further includes: a movable mount, which is used to tow other devices in the fault detection device for the speed regulation system of the nuclear power emergency diesel generator set as described above except the movable mount. Figure 1 shown.
[0071] It should be noted that since the electronic speed governor to be tested and the mechanical actuator to be tested are precision devices, the vibration generated during long-distance transportation will cause secondary damage to the electronic speed governor to be tested and the mechanical actuator to be tested, which is not conducive to improving the fault detection accuracy and efficiency. In this application, by configuring the above-mentioned movable mount, after the electronic speed governor to be tested and the mechanical actuator to be tested are removed from the nuclear power emergency diesel generator set, the fault detection can be carried out on the spot, avoiding the risk of secondary damage caused by transportation vibration.
[0072] It should be noted that in actual application scenarios, as Figure 1 shown, the structure of the fault detection device for the speed regulation system of the nuclear power emergency diesel generator set can be various. Here, an example is provided:
[0073] As Figure 3 shown, it is a schematic structural diagram of a fault detection device for the speed regulation system of a nuclear power emergency diesel generator set. This fault detection device for the speed regulation system of the nuclear power emergency diesel generator set includes: a motor 101, an inverter 102, an oscilloscope 103, an actuator output dial 104, a speed sensor 105, a power supply 106, a first switch 301, a constant current source 302, a first pulse width modulator (PWM1) 303, a fuse device 304, a tachometer 305, a second switch 306, and a second pulse width modulator (PWM2) 307.
[0074] The output end of the electronic speed governor to be tested is electrically connected to the first input end of the first switch 301, the constant current source 302 is electrically connected to the second input end of the first switch 301, the first pulse width modulator (PWM1) 303 is electrically connected to the third input end of the first switch 301, one end of the fuse device 304 is electrically connected to the output end of the first switch 301, the other end of the fuse device 304 is electrically connected to the input end of the mechanical actuator to be tested, the mechanical actuator to be tested is mechanically connected to the actuator output dial 104, the oscilloscope 103 is electrically connected to the output end of the electronic speed governor to be tested, the signal output end of the inverter 102 is electrically connected to the controller of the motor 101, the speed sensor 105 is used to collect the speed of the motor 101, the output end of the speed sensor 105 is electrically connected to the first input end of the second switch 306, the output end of the second pulse width modulator (PWM2) 307 is electrically connected to the second input end of the second switch 306, the output end of the second switch 306 is electrically connected to the input end of the electronic speed governor to be tested, and the power supply 106 supplies power to the electronic speed governor to be tested, the first pulse width modulator (PWM1) 303, the oscilloscope 103, the speed sensor 105, the motor 101, the inverter 102, and the second pulse width modulator (PWM2) 307. Figure 3 The dotted line in the figure is the power supply line.
Claims
1. A nuclear power emergency diesel generator set speed control system fault detection device, characterized in that: include: Motor, inverter, oscilloscope, actuator output dial, speed sensor and power supply, The output end of the electronic speed regulator to be tested is electrically connected to the input end of the mechanical actuator to be tested, the mechanical actuator to be tested is mechanically connected to the actuator output dial, the signal output end of the frequency converter is electrically connected to the controller of the motor, the output end of the speed sensor is electrically connected to the input end of the electronic speed regulator to be tested, the oscilloscope is electrically connected to the output end of the electronic speed regulator to be tested, the power supply is electrically connected to the motor, the frequency converter, the oscilloscope, and the speed sensor, respectively, and the speed sensor is used to collect the speed of the motor.
2. The nuclear power emergency diesel generator set speed control system fault detection device according to claim 1 is characterized in that: The nuclear power emergency diesel generator set speed control system fault detection device also includes: A first switching switch, wherein the first switching switch comprises a plurality of input terminals and an output terminal, wherein the first input terminal of the first switching switch is electrically connected to the output terminal of the electronic speed regulator to be tested, and the output terminal of the first switching switch is electrically connected to the input terminal of the mechanical actuator to be tested.
3. The nuclear power emergency diesel generator set speed control system fault detection device according to claim 2 is characterized in that: The nuclear power emergency diesel generator set speed control system fault detection device also includes: A constant current source, wherein an output end of the constant current source is electrically connected to a second input end of the first switch.
4. The nuclear power emergency diesel generator set speed control system fault detection device according to claim 2 is characterized in that: The nuclear power emergency diesel generator set speed control system fault detection device also includes: A first pulse width modulator is electrically connected to the third input terminal of the first switch.
5. The nuclear power emergency diesel generator set speed control system fault detection device according to claim 2, characterized in that: The nuclear power emergency diesel generator set speed control system fault detection device also includes: A safety device, wherein a first end of the safety device is electrically connected to an output end of the switch, and a second end of the safety device is electrically connected to an input end of the mechanical actuator to be tested.
6. The nuclear power emergency diesel generator set speed control system fault detection device according to claim 2, characterized in that: The nuclear power emergency diesel generator set speed control system fault detection device also includes: An ammeter, wherein a first end of the ammeter is electrically connected to an output end of the first switch, and a second end of the ammeter is electrically connected to an input end of the mechanical actuator to be tested.
7. The nuclear power emergency diesel generator set speed control system fault detection device according to claim 4, characterized in that: The nuclear power emergency diesel generator set speed control system fault detection device also includes: A tachometer is electrically connected to the first pulse width modulator.
8. The nuclear power emergency diesel generator set speed control system fault detection device according to claim 1, characterized in that: The nuclear power emergency diesel generator set speed control system fault detection device also includes: The second switching switch includes a plurality of input terminals and an output terminal, the output terminal of the second switching switch is electrically connected to the input terminal of the electronic speed regulator to be tested, and the output terminal of the speed sensor is electrically connected to the first input terminal of the second switching switch.
9. The nuclear power emergency diesel generator set speed control system fault detection device according to claim 8, characterized in that: The nuclear power emergency diesel generator set speed control system fault detection device also includes: A second pulse width modulator is electrically connected to a second input end of the second switch.
10. The nuclear power emergency diesel generator set speed control system fault detection device according to claim 1, characterized in that: The power supply comprises: A first power source and a second power source, wherein the first power source and the second power source have different voltages.