Fault simulation device in power control system and power control system

Abstract

The invention provides a fault simulation device in a power control system and the power control system. The fault simulation device comprises a fault source module and a fault switching module. The fault switching module is electrically connected with the fault source module; the fault switching module is also electrically connected with the first external equipment and the second external equipment; the fault source module is electrically connected with the second external equipment; the first external equipment is used for sending an operation signal of the to-be-tested module to the fault switching module; the second external equipment is used for generating a first control instruction and a second control instruction; the fault switching module is used for switching the first number of operation signals into the fault source module according to the first control instruction; the fault source module is used for simulating the first number of operation signals into corresponding simulation fault signals according to the second control instruction. In this way, the first number of operation signals can be converted into the simulation fault signals at the same time, and therefore the troubleshooting efficiency of operation and maintenance personnel is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of intelligent control, and in particular to a fault simulation device in a power control system and a power control system. Background Art

[0002] Power control systems contain numerous input / output signals. During daily operations, some input / output signals inevitably fail due to factors such as equipment aging, environmental interference, and human error. These faulty signals can cause unstable power control systems. In real life, maintenance personnel must identify the cause of a problem by individually troubleshooting numerous input / output signals based on the actual fault signals in the power control system. This process is time-consuming, labor-intensive, and requires significant investment in both personnel and resources. Summary of the Invention

[0003] The technical problem to be solved by the present disclosure is to overcome the defect in the prior art that operation and maintenance personnel need to check one by one according to the real fault signals to determine which input / output signal is causing the fault, which not only consumes a lot of time and energy, but also requires a lot of manpower and material resources. A fault simulation device in a power control system and a power control system are provided.

[0004] The present disclosure solves the above technical problems through the following technical solutions:

[0005] In a first aspect, a fault simulation device in a power control system is provided, the fault simulation device comprising a fault source module and a fault switching module;

[0006] The fault switching module is electrically connected to the fault source module;

[0007] The fault switching module is also electrically connected to the first external device and the second external device;

[0008] The fault source module is electrically connected to a second external device;

[0009] The first external device is used to send an operation signal of the module to be tested to the fault switching module;

[0010] The second external device is used to generate a first control instruction and a second control instruction;

[0011] The fault switching module is used to switch the first number of operation signals to the fault source module according to the first control instruction sent by the second external device;

[0012] The fault source module is used to simulate the first number of operating signals into corresponding simulated fault signals according to a second control instruction.

[0013] Optionally, the first number of operation signals are all operation signals sent by the first external device to the failover module;

[0014] Alternatively, the first number of operating signals are signals among all the operating signals whose similarity to the real fault signal of the module to be tested is greater than or equal to a similarity threshold.

[0015] Optionally, the fault source module includes a second number of combined path units; each of the combined path units includes two adjacent first path units; a first switch is provided at a plurality of first preset positions between the two adjacent first path units, and a second switch is provided at a plurality of second preset positions on each of the first path units;

[0016] The fault source module controls the working state of the first switch and / or the second switch according to the second control instruction sent by the second external device, so as to simulate the first number of operating signals into the corresponding simulated fault signals.

[0017] Optionally, a first resistor is provided at a plurality of third preset positions between two adjacent first path units, and a second resistor is provided at a plurality of fourth preset positions on each of the first path units;

[0018] The fault source module further controls the working state of the first resistor and / or the second resistor according to the second control instruction sent by the second external device, so as to simulate the first number of operating signals into the corresponding simulated fault signals.

[0019] Optionally, an adder and an interference component are further provided at the fifth preset position on each of the first path units;

[0020] The interference component is used to generate an interference signal;

[0021] The fault source module also injects the interference signal into the first number of operating signals through the adder according to the second control instruction sent by the second external device, so as to simulate the first number of operating signals into the corresponding simulated fault signals.

[0022] Optionally, isolation units are provided between the passages to isolate the first passage units from each other.

[0023] Optionally, the fault switching module includes a plurality of second path units; a third switch is provided at a plurality of fifth preset positions of each of the second path units;

[0024] The fault switching module is used to control the working state of the third switch according to the first control instruction sent by the second external device, so as to switch the first number of operating signals to the fault source module.

[0025] Optionally, the first switch and / or the second switch and / or the third switch are all relay switches.

[0026] In a second aspect, a power control system is provided, comprising the fault simulation device in the power control system described above, a first external device, and a second external device; the fault simulation device comprises a fault source module and a fault switching module;

[0027] The fault switching module is electrically connected to the fault source module;

[0028] The fault switching module is also electrically connected to the first external device and the second external device;

[0029] The fault source module is electrically connected to a second external device;

[0030] The first external device is used to send an operation signal of the module to be tested to the fault switching module;

[0031] The second external device is used to generate a first control instruction, a second control instruction, and a third control instruction;

[0032] The fault switching module is configured to switch the first number of operation signals to the fault source module according to the first control instruction sent by the second external device;

[0033] The fault source module is used to simulate the first number of operating signals into corresponding simulated fault signals according to the second control instruction sent by the second external device, and send the simulated fault signals to the module to be tested through the fault switching module;

[0034] The module to be tested is configured to send the first number of simulated fault signals and real fault signals to the second external device according to the third control instruction sent by the second external device;

[0035] The second external device compares the first number of simulated fault signals with the real fault signal to determine a target simulated fault signal.

[0036] Optionally, the power control system further comprises a first terminal block and a second terminal block;

[0037] The first terminal block is electrically connected to the first external device and the fault switching module;

[0038] The second terminal block is electrically connected to the module to be tested and the fault switching module;

[0039] The first external device sends the operating signal of the module to be tested to the fault switching module through the first terminal block;

[0040] The module to be tested receives the first number of simulated fault signals sent by the fault switching module through the second terminal block.

[0041] On the basis of conforming to the common sense in this field, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present disclosure.

[0042] The positive and progressive effect of the present disclosure lies in: the fault switching module switches a first number of operating signals to the fault source module according to a first control instruction; and the fault source module simulates the first number of operating signals into corresponding simulated fault signals according to a second control instruction. This allows the first number of operating signals to be converted into simulated fault signals simultaneously, thereby eliminating the need for operation and maintenance personnel to check a large number of input / output signals one by one, thereby not only saving a considerable amount of time and energy for operation and maintenance personnel, but also improving their troubleshooting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a module diagram of a fault simulation device in a power control system provided in Example 1 of the present disclosure;

[0044] Figure 2 A schematic diagram of a portion of first path units in a fault source module in a fault simulation device in a power control system provided by Example 1 of the present disclosure;

[0045] Figure 3 This is a first schematic diagram of a second path unit in a fault switching module in a fault simulation device in a power control system provided by Example 1 of the present disclosure;

[0046] Figure 4 This is a second schematic diagram of a second path unit in a fault switching module in a fault simulation device in a power control system provided by Example 1 of the present disclosure;

[0047] Figure 5 A schematic diagram of a fault source card in a fault source module in a fault simulation device in a power control system provided in Example 1 of the present disclosure;

[0048] Figure 6 A schematic diagram of a fault switching card placed in a fault switching module in a fault simulation device in a power control system provided in Example 1 of the present disclosure;

[0049] Figure 7A schematic diagram of a fault switching card in a fault simulation device in a power control system provided in Example 1 of the present disclosure;

[0050] Figure 8 A module diagram of a power control system provided in Example 2 of the present disclosure. DETAILED DESCRIPTION

[0051] The present disclosure is further illustrated below by way of examples, but the present disclosure is not limited to the scope of the examples.

[0052] In the embodiments of the present disclosure, prefixes such as "first" and "second" are used only to distinguish different description objects and have no limiting effect on the position, order, priority, quantity or content of the described objects. In the embodiments of the present disclosure, the use of prefixes such as ordinal numbers to distinguish description objects does not constitute a restriction on the described objects. For the statement of the described objects, please refer to the description in the context of the embodiments, and the use of such prefixes should not constitute an unnecessary restriction. In addition, in the description of this embodiment, unless otherwise specified, the meaning of "plurality" is two or more.

[0053] Example 1

[0054] In order to improve the troubleshooting efficiency of operation and maintenance personnel, embodiment 1 of the present invention provides a fault simulation device in a power control system. Figure 1 This is a schematic diagram of a module of a fault simulation device in a power control system provided in Example 1 of the present disclosure. Preferably, the fault simulation device 10 in a power control system is applied in a hardware-in-the-loop power control system. The fault simulation device 10 in the power control system includes a fault switching module 11 and a fault source module 12. The fault simulation device 10 in the power control system may include multiple fault switching modules 11 and multiple fault source modules 12 to process operating signals of more modules under test.

[0055] The fault switching module 11 is electrically connected to the fault source module 12 ; the fault switching module 11 is also electrically connected to a first external device and a second external device; the fault source module 12 is electrically connected to the second external device.

[0056] The first external device is used to send the operating signal of the module to be tested to the fault switching module 11; the second external device is used to generate a first control instruction and a second control instruction; the fault switching module 11 is used to switch the first number of operating signals to the fault source module 12 according to the first control instruction; the fault source module 12 is used to simulate the first number of operating signals into corresponding simulated fault signals according to the second control instruction.

[0057] The second external device, the fault switching module 11 and the multiple fault source modules 12 can be controlled using RS485 serial port control, and the communication protocol thereof is MODBUS protocol, which is a serial communication protocol.

[0058] The fault simulation device in the power control system can automatically detect the status after power-on, with a normal status displayed in green and a fault status displayed in red.

[0059] The supply voltage of the fault source module 12 is 24 volts.

[0060] In this embodiment, the first number of operating signals are switched to the fault source module according to the first control instruction by the fault switching module; and the fault source module simulates the first number of operating signals into corresponding simulated fault signals according to the second control instruction. In this way, the first number of operating signals can be converted into simulated fault signals at the same time, so that the operation and maintenance personnel no longer need to check one by one among a large number of input / output signals, which not only saves a lot of time and energy of the operation and maintenance personnel, but also speeds up the troubleshooting efficiency of the operation and maintenance personnel. In addition, by controlling multiple hardware modules through the second external device, multi-point signal faults and multiple types of faults are generated at the same time, and each operating signal can be superimposed with an injected fault signal. By integrating multiple fault source modules and multiple fault switching modules, it can meet the requirements of injecting at least 400 operating signals into faults, which can more realistically restore the fault conditions that may occur in actual operation, and help to gain a deeper understanding of the operating characteristics and performance of the power control system under complex fault conditions.

[0061] In one embodiment, the first number of operating signals are all operating signals sent by the first external device to the fault switching module 11; or the first number of operating signals are signals among all operating signals whose similarity to the real fault signal of the module to be tested is greater than or equal to a similarity threshold.

[0062] For example, if the number of operating signals required for the normal operation of a module to be tested is 400, then the first number of operating signals is all operating signals sent by the first external device to the fault switching module 11, namely the 400 signals.

[0063] Before troubleshooting the signal, the operation and maintenance personnel can use a simulator to verify that the signal has a similarity greater than or equal to a similarity threshold with the real fault signal of the module to be tested. Assuming there are 64 similar signals, the first number of operating signals mentioned above are the signals among all operating signals whose similarity with the real fault signal of the module to be tested is greater than or equal to the similarity threshold, namely, these 64 similar signals.

[0064] In this embodiment, by switching the first number of operating signals to the fault switching module 11, the fault switching module 11 can more comprehensively process the first number of operating signals, preventing missed processing that could result in signal failure. By inputting only those operating signals whose similarity to the actual fault signal of the module under test is greater than or equal to a similarity threshold into the fault switching module 11, the fault switching module 11 can reduce unnecessary signal processing, thereby speeding up the processing speed of the fault switching module 11.

[0065] In one embodiment, the fault source module 12 includes a second number of combined path units; each combined path unit includes two adjacent first path units; a first switch is provided at a plurality of first preset positions between the two adjacent first path units, and a second switch is provided at a plurality of second preset positions on each first path unit;

[0066] Each channel unit is designed to be non-polar, and its input and output interfaces are jack-type, which can be inserted into banana plugs. Preferably, the voltage of each channel unit is set to 55 volts, and the current of each channel unit is set to 1 amp. All first switches and second switches are programmable switches.

[0067] The fault source module 12 controls the working state of the first switch and / or the second switch according to the second control instruction to simulate the first number of operating signals into corresponding simulated fault signals.

[0068] In this embodiment, the fault source module 12 only needs to control the working status of the first switch and / or the second switch according to the second control instruction to quickly simulate the first number of operating signals into corresponding simulated fault signals, which is faster than manual setting and can more efficiently simulate the first number of operating signals into simulated fault signals.

[0069] In one embodiment, a first resistor is provided at a plurality of third preset positions between two adjacent first path units, and a second resistor is provided at a plurality of fourth preset positions on each first path unit.

[0070] The fault source module 12 further controls the working state of the first resistor and / or the second resistor according to the second control instruction, so as to simulate the first number of operating signals into corresponding simulated fault signals.

[0071] Preferably, the adjustment range of the first resistor and the second resistor is 0 to 3 megohms; the step length of each resistance adjustment is 1 ohm.

[0072] In this embodiment, the fault source module 12 only needs to adjust the working state of the first resistor and / or the second resistor according to the second control instruction to quickly simulate the first number of operating signals into corresponding simulated fault signals, which is faster than manual setting and can more efficiently simulate the first number of operating signals into simulated fault signals.

[0073] In one embodiment, an adder and an interference component are further provided at the fifth preset position on each first path unit; the interference component is used to generate an interference signal;

[0074] The first path units all support the interference signal injection function. The waveform of the interference signal can be at least one of a sine wave, a square wave, a triangle wave, white noise, and a burr. The amplitude of the interference signal ranges from 0 to 4.5 volts and the frequency ranges from 1 Hz to 200 kHz.

[0075] The fault source module 12 further injects the interference signal into the first number of operating signals through the adder according to the second control instruction, so as to simulate the first number of operating signals into corresponding simulated fault signals.

[0076] In this embodiment, since the normal operating signal may also be interfered with by some interference signals during operation, adding some interference signals in the process of simulating the fault signal can make the simulated fault signal more realistic, and thus the subsequent comparison result with the real fault signal can be more accurate.

[0077] In one embodiment, isolation units are provided between the pathways to isolate the first pathway units from each other.

[0078] Preferably, the isolation unit may be a ground wire, and its external grounding port is in the form of a jack.

[0079] In this embodiment, all first path units are isolated from each other by using a ground line, which can prevent a short circuit from occurring when the output is grounded.

[0080] In one embodiment, Figure 2 This is a schematic diagram of a portion of the first path unit in a fault source module in a fault simulation device in a power control system provided by Example 1 of the present disclosure. Figure 2 Further explain how the fault simulation device converts the operating signal into a simulation signal.

[0081] Input operation signal ( Figure 2 CH1 IN+ and CH1-, CH2 IN+ and CH2-, CH3IN+ and CH3-, CH4 IN+ and CH4-) and their corresponding output analog fault signals ( Figure 2The paths between CH1 OUT+ and CH1-, CH2 OUT+ and CH2-, CH3 OUT+ and CH3-, CH4 OUT+ and CH4-) are the first path units mentioned above, and the combined path unit includes two adjacent first path units.

[0082] Figure 2 The switches K11 to K49 are the first switches mentioned above; Figure 2 The switches K1A to K3A and the switches K1B to K3B are the second switches mentioned above; Figure 2 The resistors R1 to R4 are the first resistors mentioned above; Figure 2 The resistors R5 to R6 are the second resistors mentioned above; Figure 2 The resistors R7 to R14 in the figure are external resistors; Figure 2 X1 to X4 in the figure are adders mentioned above; Figure 2 M1 to M4 are the interference components mentioned above. Figure 2 GND1~GND3 are ground wire interfaces.

[0083] Taking the combined path unit composed of CH1 IN+ and CH1-, CH2 IN+ and CH2-, CH1 OUT+ and CH1-, CH2 OUT+ and CH2- as an example, the initial state is that all switches are in the off state. The host computer (the second external device mentioned above) RS485 serial port controls the corresponding switches, resistors, adders and interference components to form the corresponding fault type: For example:

[0084] 1) Turning off the switch K12 can disconnect CH1IN+ from CH1-, thereby disconnecting the first path unit composed of CH1IN+ and CH1-, and CH1OUT+ and CH1-.

[0085] 2) Close switches K1 and / K15 to short-circuit CH1IN+ and CH1- before output, thereby short-circuiting the first path unit composed of CH1IN+ and CH1-, CH1 OUT+ and CH1-;

[0086] 3) Close switch K1A to bridge CH1- and CH2-; close switch K1B to bridge CH1IN+ and CH2IN+, thereby bridging the two first path units in the combined path unit consisting of CH1IN+ and CH1-, CH2IN+ and CH2-, CH1OUT+ and CH1-, and CH2OUT+ and CH2-;

[0087] 4) Connect GND1 to the ground and close switches K13 / K14 to short-circuit CH1 to the ground.

[0088] 5) Connect 24VCH1 to the 24V power supply and close switch K11 to short-circuit CH1 to the power supply;

[0089] 6) By adjusting the resistance, input impedance can be generated in the loop;

[0090] 7) Control the adder and interference module to superimpose sine wave, square wave, triangle wave, white noise and glitch signals in the loop.

[0091] In one embodiment, the fault switching module 11 includes a plurality of second path units; a third switch is provided at a plurality of fifth preset positions of each second path unit;

[0092] The fault switching module 11 is used to control the working state of the third switch according to the first control instruction, so as to switch the first number of operating signals to the fault source module 12 .

[0093] Furthermore, the fault switching module 11 includes a combination of a controller card and a fault switching card. In a normal fault-free state, the operating signal of the I / O system (first external device) is directly injected into the object to be tested through a quick connector; or the real-time output signal received from the object to be tested is injected into the I / O system through a quick connector. In a fault state, the converted electrical signal is superimposed on or replaced by an electrical signal with a real fault and injected into the object to be tested under a controlled state; or the received real-time output electrical signal is converted into a digital quantity with a fault and injected into the I / O system. The fault switching module 11 may include a control card and 12 fault switching cards. The 12 fault switching cards are placed in the fault switching module 11 as shown in the following figure. Figure 6 As shown in the dotted box in the figure, the schematic diagram of the failover card is as follows Figure 7 As shown, the control card communicates with the host computer (first external device) via TCP and with the fault switching card via a 485 serial port. Each second-path unit has an indicator light to provide feedback. If the signal in the second-path unit is normal, the green light will be on. If the fault source module 12 is switched to, the yellow and red lights will be on (where the yellow and red lights indicate which combined path unit in the fault source module 12 is switched to). This notifies the tester of the current test path switching status.

[0094] In this embodiment, the fault switching module 11 only needs to control the working state of the third switch according to the first control instruction to quickly switch the first number of operating signals to the fault source module 12, which is faster than manual setting, and can more efficiently switch the first number of operating signals to the fault source module 12.

[0095] In one embodiment, Figure 3 A first schematic diagram of a second path unit in a fault switching module in a fault simulation device in a power control system provided by embodiment 1 of the present disclosure; Figure 3 The switching process is described when there is only one fault source card in a fault source module. It should be noted that a fault source module can have multiple fault source cards, and each fault source card can simulate the required simulated fault signal.

[0096] Figure 3 The switches KA1 to KA4 and KA31 and KA32 are all the third switches mentioned above.

[0097] When there is only the first fault source card F1, each second path unit is controlled by two relay switches. Figure 4 In the second channel unit composed of CH1-IN and CH1-OUT, KA1 is closed and the switch of KA2 is used to select whether to connect to the first fault source card F1. It should be noted that the first fault source card F1 can only connect to one second channel unit.

[0098] In one embodiment, Figure 4 A second schematic diagram of a second path unit in a fault switching module in a fault simulation device in a power control system provided in embodiment 1 of the present disclosure; Figure 4 Describes the switching process when there are multiple fault source cards.

[0099] Figure 4 The switches KA1, KA3, KA33 and KA34 are all the third switches mentioned above.

[0100] When there are two fault source cards, namely the first fault source card F1 and the second fault source card F2, Figure 4 The second path unit composed of CH1-IN and CH1-OUT is connected to the first fault source card F1 and the first fault source card F2 through two sets of relay switches. By controlling the opening and closing of the relay switches, the specific fault injection source card to be connected is selected, and the rear-end relay of the fault injection source card is disconnected to ensure that the signal does not flow back and affect the accuracy of the test.

[0101] In one embodiment, Figure 5 This is a schematic diagram of a fault source card in a fault source module in a fault simulation device in a power control system provided in Example 1 of the present disclosure.

[0102] The fault source card is 30 cm long and 20 cm wide, with an external output port at one end and a 55V voltage output port at the other end.

[0103] It should be noted that the first preset position, the second preset position, the third preset position, the fourth preset position and the fifth preset position mentioned above can be set according to actual conditions.

[0104] In one embodiment, the first switch and / or the second switch and / or the third switch are all relay switches.

[0105] In this embodiment, the mechanical switching action of the relay can more realistically simulate faults such as open circuit, poor contact, and short circuit, and is completely insulated when disconnected, thereby preventing the tiny leakage current of the switch from affecting the authenticity of the simulated fault signal.

[0106] Example 2

[0107] Corresponding to the embodiment of the fault simulation device in the aforementioned power control system, the present disclosure also provides an embodiment of the power control system. Figure 8 A schematic diagram of a power control system according to Embodiment 1 of the present disclosure; the power control system includes the fault simulation device, a first external device, and a second external device in the power control system according to Embodiment 1; the fault simulation device includes a fault source module and a fault switching module;

[0108] The fault switching module 11 is electrically connected to the fault source module 12; the fault switching module 11 is also electrically connected to the first external device 21 and the second external device 23; the fault source module 12 is electrically connected to the second external device 23; the first external device 21 is used to send an operation signal of the module to be tested 22 to the fault switching module 11;

[0109] The second external device 23 is used to generate a first control instruction, a second control instruction and a third control instruction; the fault switching module 11 is used to switch the first number of operating signals to the fault source module 12 according to the first control instruction; the fault source module 12 is used to simulate the first number of operating signals into corresponding simulated fault signals according to the second control instruction, and send them to the module to be tested 22 through the fault switching module 11; the module to be tested 22 is used to send the first number of simulated fault signals and real fault signals to the second external device 23 according to the third control instruction; the second external device 23 compares the first number of simulated fault signals with the real fault signals to determine the target simulated fault signal.

[0110] In this embodiment, the fault switching module 11 switches a first number of operating signals to the fault source module 12 according to a first control instruction. The fault source module 12 simulates the first number of operating signals into corresponding simulated fault signals according to a second control instruction, and determines the target simulated fault signal by comparing the first number of simulated fault signals with the actual fault signal. This allows the first number of operating signals to be converted into simulated fault signals simultaneously, eliminating the need for operation and maintenance personnel to individually troubleshoot a large number of input / output signals. This not only saves the operation and maintenance personnel a significant amount of time and energy, but also increases their troubleshooting efficiency.

[0111] In one embodiment, the power control system further comprises a first terminal block and a second terminal block;

[0112] The first terminal block is electrically connected to the first external device 21 and the fault switching module 11; the second terminal block is electrically connected to the module to be tested 22 and the fault switching module 11;

[0113] The first external device 21 sends the operation signal of the module under test 22 to the fault switching module 11 through the first terminal block; the module under test 22 receives the first number of simulated fault signals sent by the fault switching module 11 through the second terminal block.

[0114] The first and second terminal blocks each have two interfaces, one input and one output. The interface between the first terminal block and the fault switching module 11 is a 37pi female connector, and the port connected to the input and output system (the first external system) is a green terminal block. The interface between the second terminal block and the fault switching module 11 is a 37pi female connector, and the port connected to the module under test 22 is a green terminal block.

[0115] Using different wiring harnesses and terminal blocks of different colors for different operating signals helps testers distinguish the corresponding signal types during large-scale point testing and also facilitates wiring.

[0116] While specific embodiments of the present disclosure have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present disclosure is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present disclosure, and such changes and modifications are intended to fall within the scope of protection of the present disclosure.

Claims

1. A fault simulation device in a power control system, characterized in that: The fault simulation device includes a fault source module and a fault switching module; The fault switching module is electrically connected to the fault source module; The fault switching module is also electrically connected to the first external device and the second external device; The fault source module is electrically connected to the second external device; The first external device is used to send an operation signal of the module to be tested to the fault switching module; The second external device is used to generate a first control instruction and a second control instruction; The fault switching module is used to switch the first number of operation signals to the fault source module according to the first control instruction sent by the second external device; The fault source module is used to simulate the first number of operation signals into corresponding simulated fault signals according to the second control instruction sent by the second external device.

2. The fault simulation device according to claim 1, characterized in that: The first number of operation signals is all operation signals sent by the first external device to the failover module; Alternatively, the first number of operating signals are signals among all the operating signals whose similarity to a real fault signal of the module to be tested is greater than or equal to a similarity threshold.

3. The fault simulation device according to claim 1, wherein: The fault source module includes a second number of combined path units; each of the combined path units includes two adjacent first path units; a first switch is provided at a plurality of first preset positions between the two adjacent first path units, and a second switch is provided at a plurality of second preset positions on each of the first path units; The fault source module controls the working state of the first switch and / or the second switch according to the second control instruction sent by the second external device, so as to simulate the first number of operating signals into the corresponding simulated fault signals.

4. The fault simulation device according to claim 3, characterized in that: A first resistor is provided at a plurality of third preset positions between two adjacent first path units, and a second resistor is provided at a plurality of fourth preset positions on each of the first path units; The fault source module further controls the working state of the first resistor and / or the second resistor according to the second control instruction sent by the second external device, so as to simulate the first number of operating signals into the corresponding simulated fault signals.

5. The fault simulation device according to claim 3, characterized in that: An adder and an interference component are further provided at the fifth preset position on each of the first path units; The interference component is used to generate an interference signal; The fault source module also injects the interference signal into the first number of operating signals through the adder according to the second control instruction sent by the second external device, so as to simulate the first number of operating signals into the corresponding simulated fault signals.

6. The fault simulation device according to claim 3, characterized in that: Isolation units are provided between the first path units to isolate the first path units from each other.

7. The fault simulation device according to claim 3, characterized in that: The fault switching module includes a plurality of second path units; a third switch is provided at a plurality of fifth preset positions of each of the second path units; The fault switching module is used to control the working state of the third switch according to the first control instruction sent by the second external device; so as to switch the first number of operating signals to the fault source module.

8. The fault simulation device according to claim 7, characterized in that: The first switch and / or the second switch and / or the third switch include relay switches.

9. A power control system, characterized in that: The power control system comprises the fault simulation device in the power control system according to any one of claims 1 to 8, a first external device and a second external device; the fault simulation device comprises a fault source module and a fault switching module; The first external device is used to send an operation signal of the module to be tested to the fault switching module; The second external device is used to generate a first control instruction, a second control instruction, and a third control instruction; The fault switching module is used to switch the first number of operation signals to the fault source module according to the first control instruction sent by the second external device; The fault source module is used to simulate the first number of operating signals into corresponding simulated fault signals according to the second control instruction sent by the second external device, and send the simulated fault signals to the module to be tested through the fault switching module; The module to be tested is configured to send the first number of simulated fault signals and real fault signals to the second external device according to the third control instruction sent by the second external device; The second external device compares the first number of simulated fault signals with the real fault signal to determine a target simulated fault signal.

10. The power control system according to claim 9, further comprising a first terminal block and a second terminal block; The first terminal block is electrically connected to the first external device and the fault switching module; The second terminal block is electrically connected to the module to be tested and the fault switching module; The first external device sends the operating signal of the module to be tested to the fault switching module through the first terminal block; The module to be tested receives the first number of simulated fault signals sent by the fault switching module through the second terminal block.

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