A method and system for detecting faults of electric power equipment

Abstract

The present invention discloses a fault detection method and system for electric power equipment, and specifically relates to the technical field of electric power troubleshooting. By recording environmental sounds and filtering sounds in non-specified directions through an audio monitoring module, when a fault occurs in the electric power equipment, a fault self-checking system is started, and at the same time, an abnormal sound waveform occurs at the electric power equipment position in the specified direction of the audio monitoring module, and a relatively clear abnormal sound waveform is extracted to identify the sound source of the abnormal sound waveform, and the audio monitoring module detection equipment of multiple distributed monitoring units integrates the identified sound source position to confirm the fault source position, and can record through an infrared thermal imaging module at the same time. This method can maintain a timely response when a fault occurs, and can quickly locate the fault point position, and the fault state of the fault point and the status information of the fault self-checking system are integrated through a fault information verification module and sent to an emergency disposal system.

Description

Technical Field

[0001] The present invention relates to the technical field of power troubleshooting, and more specifically, to a fault detection method and system for power equipment. Background Art

[0002] Someone once conducted a preliminary investigation on the reliability of all power equipment in the world. In the investigation, it was found that mechanical failures accounted for about 70% of MF and mf failures. The so-called MF refers to a major failure, which causes one or more basic functions of the power equipment to fail. mf refers to a minor failure, which is a failure other than the major failure. In the second investigation of power equipment above 63kV, it was found that among all major failures, failures caused by mechanical operation accounted for 44%, and among all minor failures, failures caused by mechanical operation accounted for 39.4%. Therefore, it can be seen that mechanical failures are the main part. In the previous two investigations, it was also found that only 4.7% of major failures and 25.1% of minor failures could be discovered in advance during routine inspections: another 8.1% of major failures and 4.5% of minor failures were caused by improper repairs. Therefore, it can be seen that there are still great problems and deficiencies in the regular maintenance of power equipment. At present, the failures of power equipment in my country are mainly manifested in: abnormal vibration, corrosion, fatigue, wear, creep, plastic fracture, brittleness and insulation degradation.

[0003] In the current field of power equipment fault detection, thermal imaging has been developed to a relatively mature level. However, in the current application of thermal imaging in this field, after the overall deployment is completed, the flexibility of subsequent use is poor. After a fault occurs, it is impossible to effectively and quickly automatically lock the fault point, so that it still takes a lot of time to troubleshoot the fault, which affects the use of power equipment. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a fault detection method and system for electric power equipment. The technical problem to be solved by the present invention is: during the thermal imaging detection process of electric power equipment, there is a problem that the fault point cannot be independently, effectively and accurately identified and located, which requires a large amount of manual investigation and verification, and the inspection efficiency is extremely low.

[0005] To achieve the above object, the present invention provides the following technical solution: a fault detection method for electric power equipment, comprising the following steps:

[0006] S1. Multiple monitoring units are arranged at multiple angles around the power equipment, and the temperature and sound of the power equipment are monitored in real time to obtain a reference operating sound and a reference operating temperature.

[0007] S2. Connect the monitoring unit to the fault self-detection system of the power equipment to perform one-way data sharing and control at the software level.

[0008] S3. Multiple monitoring units synchronously monitor the temperature of the same power equipment in real time by automatically locating the fault point based on sound changes.

[0009] S4. When the monitoring unit performs positioning detection, the temperature of the positioning area is monitored, and the fault self-detection system is coordinated and judged based on the temperature monitoring.

[0010] As a further solution of the present invention: the reference operating sound is the sound monitoring within a specified direction range, and the reference operating sound and the reference operating temperature are taken as the average value of historical monitoring data.

[0011] As a further solution of the present invention: when an abnormal sound waveform appears in the benchmark operating sound waveform monitored in a specified direction, pre-processing is performed, and the sound source is located based on the abnormal sound, and the temperature of the area is measured and compared with the historical benchmark operating temperature to determine the abnormal position and corresponding status information.

[0012] As a further solution of the present invention: multiple monitoring units are communicatively connected to a common fault self-detection system, and the fault self-detection system is integrated with a fault self-repair unit. The fault self-detection system verifies the fault information through a fault information verification module and then reports it to the emergency handling system for emergency handling response.

[0013] As a further solution of the present invention: the monitoring unit includes a central processing unit for data processing, the input end of the central processing unit is electrically connected to an infrared thermal imaging module for thermal imaging, the input end of the central processing unit is also electrically connected to an audio monitoring module, the output end of the central processing unit is provided with a driving module whose movement is precisely controlled by the central processing unit, and the output end of the central processing unit is provided with a data transmission interface for connecting a communication line.

[0014] As a further solution of the present invention: the input end of the central processor is electrically connected to a capture module for recording instantaneous temperature changes, and the recorded data of the capture module is stored in a picture format, and the input end of the capture module is electrically connected to an imaging control module.

[0015] As a further solution of the present invention: the input end of the central processing unit is electrically connected to an audio pre-processing module and an audio synthesis and repair module for noise reduction of abnormal sound waveforms, and the audio synthesis and repair module includes a mutual comparison and repair of the same waveform audio data under the same time for multiple monitoring units.

[0016] As a further solution of the present invention: the imaging control module includes a temperature sensor for monitoring the ambient temperature, and determines whether the overall surface temperature value of the equipment is in direct proportion to the ambient temperature change, and adjusts the overall imaging brightness value of the infrared thermal imaging module accordingly.

[0017] As a further solution of the present invention: the audio monitoring module and the infrared thermal imaging module included in the monitoring unit are electrically connected to the surface of the central processing unit, and the audio monitoring module, the infrared thermal imaging module and the central processing unit are all installed in a shell, and a support frame is fixedly installed on the lower surface of the shell through a plurality of shock-absorbing pads, one side of the support frame is movably connected to the driving module, and the data transmission interface electrically connected to the surface of the central processing unit is fixed through the surface of the shell.

[0018] As a further solution of the present invention: the driving module includes a support shaft fixedly connected to one side of the support frame, a driven wheel is fixedly sleeved on the surface of the support shaft, two rotating parts are rotatably connected to the surface of the support shaft, a fixed plate is commonly fixed to the two rotating parts, a motor is fixedly connected to the surface of the fixed plate, a driving wheel is fixed to the output shaft of the motor, a tooth groove is opened on the surface of the driven wheel for meshing and transmitting with the driving wheel, and two clamps for limiting the rotation of the rotating parts are fixedly connected to the surface of the support shaft.

[0019] The beneficial effects of the present invention are:

[0020] 1. When the monitoring unit of the present invention is in use, the audio monitoring module records the ambient sound and filters the sound in the non-specified direction. When the power equipment fails, the fault self-checking system is started, so that the self-checking process of the power equipment performs fault self-checking. At the same time, an abnormal sound waveform appears at the power equipment position in the specified direction of the audio monitoring module, so that the recording is pre-processed, and a relatively clear abnormal sound waveform is extracted to identify the sound source of the abnormal sound waveform. The audio monitoring modules of the multiple distributed monitoring units detect the sound source position of the equipment for identification, so that the fault source position is confirmed. At the same time, the infrared thermal imaging module can be used for recording. This method can maintain a timely response when a fault occurs, and can quickly locate the fault point. The fault state of the fault point and the status information of the fault self-checking system are integrated through the fault information verification module and sent to the emergency disposal system.

[0021] 2. When the present invention is used, when the power equipment is operating normally, the monitoring unit performs real-time monitoring of the power equipment direction through the infrared thermal imaging module. When an abnormal sound waveform is detected at the position of the power equipment, multiple detection units are used to perform audio pre-processing, eliminate the reference operation sound waveform, and amplify the audio of the remaining waveform to extract the abnormal sound waveform. In synchronization with the positioning of the sound source, the infrared thermal imaging module is used to mark the temperature information of the position, so that the fault information monitored by it is sent to the fault self-checking system, and is checked by the fault information checking module, and its fault data is compared with the fault code monitored by the fault self-checking system to see if it matches. Through the emergency handling system, the handling personnel can quickly and accurately grasp the fault point, the cause and status of the fault, and facilitate rapid and accurate handling operations;

[0022] 3. The present invention sets a central processing unit, and the central processing unit monitors the room temperature of the infrared thermal imaging module through the imaging control module and the capture module integrated on the surface, and determines whether the overall surface temperature value of the equipment is normal, and adjusts the overall imaging brightness value of the infrared thermal imaging module accordingly, and self-adjusts the display brightness to assist in accurately and quickly finding the abnormal area. At the same time, the capture module identifies the short-term abnormal sound source of some transient power equipment positions, and retains the image of the infrared thermal imaging module at the sound source position, and sends a fault self-check request to the fault self-check system through the central processing unit, so as to further improve the comprehensiveness of fault detection;

[0023] 4. The present invention uses a driving module and a central processing unit. The central processing unit confirms the position of the sound source and controls the motor so that when the motor rotates through the driving wheel, the driving wheel drives the driven wheel to start rotating through the tooth groove. The driven wheel drives the support shaft and the support frame to deflect under the support of the rotating part, so that the overall direction can be changed. It can be used for larger power equipment to ensure audio monitoring and maintain fault point tracking through thermal imaging recording. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall arrangement state of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall system architecture principle of the present invention;

[0026] Figure 3 This is a schematic diagram of the overall system structure of the monitoring unit of the present invention;

[0027] Figure 4 is a three-dimensional schematic diagram of the monitoring unit of the present invention;

[0028] Figure 5 A three-dimensional schematic diagram of the monitoring unit of the present invention from another viewing angle;

[0029] Figure 6 It is a three-dimensional cross-sectional schematic diagram of the monitoring unit of the present invention;

[0030] Figure 7 It is a three-dimensional cross-sectional schematic diagram of the driving module of the present invention;

[0031] Figure 8 It is a cross-sectional schematic diagram of a three-dimensional support shaft of the present invention;

[0032] Fig. 9 This is a schematic diagram of the state in which the monitoring unit of the present invention is disturbed by environmental noise;

[0033] Fig.10 This is a schematic diagram of the audio monitoring module of the present invention performing pre-processing on abnormal sound waveforms;

[0034] Fig.11 It is a schematic diagram of the fault point locking state of the power equipment application state of the present invention.

[0035] In the figure: 1. Monitoring unit; 2. Power equipment; 3. Interference source; 11. Audio monitoring module; 12. Infrared thermal imaging module; 13. Central processing unit; 14. Driving module; 141. Fixing plate; 142. Motor; 143. Driving wheel; 144. Driven wheel; 145. Tooth groove; 146. Fixture; 147. Rotating part; 148. Support shaft; 15. Shell; 16. Support frame; 17. Shock-absorbing pad; 18. Data transmission interface. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The sound source identification in a specified direction based on the monitoring unit 1 described in this article is an existing mature technology and will not be presented in detail in this description.

[0038] Embodiment 1:

[0039] A method for detecting a fault of an electric device comprises the following steps:

[0040] S1. Multiple monitoring units 1 are arranged at multiple angles around the power equipment 2, and the temperature and sound of the power equipment 2 are monitored in real time to obtain a reference operating sound and a reference operating temperature.

[0041] S2. Connect the monitoring unit 1 to the fault self-detection system of the power equipment 2 to perform one-way data sharing and control at the software level.

[0042] S3. Multiple monitoring units 1 synchronously operate the same power equipment 2 in real time to automatically locate the fault point based on the sound changes and then perform temperature monitoring.

[0043] S4. When the monitoring unit 1 performs positioning detection, the temperature of the positioning area is monitored, and the fault self-detection system is coordinated and judged based on the temperature monitoring.

[0044] The audio monitoring module 11 records the ambient sound and filters the sound from non-specified directions. When the power equipment 2 fails, the fault self-detection system is started, so that the power equipment 2 performs fault self-detection through its own self-detection process. At the same time, an abnormal sound waveform appears at the position of the power equipment 2 in the specified direction of the audio monitoring module 11, so that it pre-processes the recording and extracts a clearer abnormal sound waveform to identify the sound source of the abnormal sound waveform. The audio monitoring modules 11 of multiple distributed monitoring units 1 detect the identified sound source positions and integrate them to confirm the fault source location. At the same time, the infrared thermal imaging module 12 can be used for recording. This method can maintain a timely response when a fault occurs, and can quickly locate the fault point. The fault status of the fault point and the status information of the fault self-detection system are integrated through the fault information verification module and sent to the emergency response system.

[0045] Embodiment 2:

[0046] Based on Example 1, this solution further:

[0047] When the power equipment 2 is operating normally, the monitoring unit 1 performs real-time monitoring in the direction of the power equipment 2 through the infrared thermal imaging module 12. When an abnormal sound waveform is detected at the position of the power equipment 2, multiple detection units are used to perform audio pre-processing, eliminate the reference operation sound waveform, and amplify the audio of the remaining waveform to extract the abnormal sound waveform. Synchronously with the location of the sound source, the infrared thermal imaging module 12 is used to mark the temperature information of the position, so that the fault information monitored by it is sent to the fault self-detection system, and is verified through the fault information verification module, and its fault data is compared with the fault code monitored by the fault self-detection system to see if it matches. Through the emergency handling system, the handling personnel can quickly, accurately and directly grasp the fault point, the cause and status of the fault, so as to facilitate rapid and accurate handling operations.

[0048] Embodiment 3:

[0049] For Example 1 and Example 2, further:

[0050] The central processing unit 13 monitors the room temperature of the infrared thermal imaging module 12 through the imaging control module and the capture module integrated on the surface, and determines whether the overall surface temperature value of the equipment is normal, and adjusts the overall imaging brightness value of the infrared thermal imaging module 12 accordingly, and self-adjusts the display brightness to assist in accurately and quickly finding the abnormal area. At the same time, the capture module identifies the short-term abnormal sound source of some instantaneous power equipment 2 positions, and retains the image of the infrared thermal imaging module 12 at the sound source position, and sends a fault self-detection request to the fault self-detection system through the central processing unit 13 to further improve the comprehensiveness of fault detection.

[0051] Specifically, the monitoring unit 1 includes a central processing unit 13 for data processing, the input end of the central processing unit 13 is electrically connected to an infrared thermal imaging module 12 for thermal imaging, the input end of the central processing unit 13 is also electrically connected to an audio monitoring module 11, the output end of the central processing unit 13 is provided with a driving module 14 whose movement is precisely controlled by the central processing unit 13, and the output end of the central processing unit 13 is provided with a data transmission interface 18 for connecting a communication line.

[0052] By setting up the central processing unit 13, the central processing unit 13 can maintain coordination between the various modules of the detection unit. By setting up the infrared thermal imaging module 12, thermal imaging processing can be performed. By setting up the data transmission interface 18, the data transmission interface 18 can facilitate data flow and sharing between the overall data and the power equipment 2 system.

[0053] Specifically, the input end of the central processor 13 is electrically connected to a capture module for recording instantaneous temperature changes, and the recorded data of the capture module is stored in a picture format. The input end of the capture module is electrically connected to an imaging control module.

[0054] By setting up a capture module, the capture module can record the temperature changes in an instant and save it in a picture format, so that the temperature changes over a period of time can be recorded, which can assist subsequent staff in troubleshooting the fault points and locate them quickly and accurately.

[0055] By setting up an imaging control module, the imaging control module includes a temperature sensor to monitor the room temperature, and judge whether the overall surface temperature value of the equipment is normal, and adjust the overall imaging brightness value of the infrared thermal imaging module 12 accordingly, and self-adjust the display brightness to assist in accurately and quickly finding abnormal areas.

[0056] Specifically, the input end of the central processor 13 is electrically connected to an audio pre-processing module and an audio synthesis and repair module for denoising abnormal sound waveforms. The audio synthesis and repair module includes a mutual comparison and repair of the same waveform audio data of multiple monitoring units 1 at the same time.

[0057] By setting the audio pre-processing module, audio pre-processing module, see Fig.10 , shows the difference between the spectrum diagrams before and after audio pre-processing. It can be seen that by taking the benchmark operating sound waveform as a reference, the abnormal sound waveform is extracted in a targeted manner, so that the abnormal frequency band can be highlighted and cleared as a whole. Before and after the fault occurs, that is, before and after the abnormal sound waveform occurs, after overall processing, it is easier for the staff to identify the fault sound, so that they can more conveniently judge through experience and improve the accuracy of judgment.

[0058] Specifically, the imaging control module includes a temperature sensor for monitoring the ambient temperature, and determines whether the overall surface temperature of the device is proportional to the ambient temperature change, and adjusts the overall imaging brightness value of the infrared thermal imaging module 12 accordingly. Fig.11 As shown in the picture, since the power equipment 2 as a whole is compared with the ambient temperature, the overall temperature is judged based on the ambient temperature, and the brightness of the picture is adjusted at the same time to ensure the stability of the overall display, so that the abnormal position can be located more intuitively.

[0059] Specifically, the audio monitoring module 11 and the infrared thermal imaging module 12 included in the monitoring unit 1 are electrically connected to the surface of the central processing unit 13, and the audio monitoring module 11, the infrared thermal imaging module 12 and the central processing unit 13 are all installed in a shell 15, and a support frame 16 is fixedly installed on the lower surface of the shell 15 through a plurality of shock-absorbing pads 17, one side of the support frame 16 is movably connected to the driving module 14, and a data transmission interface 18 electrically connected to the surface of the central processing unit 13 is fixed through the surface of the shell 15.

[0060] By setting the support frame 16, the support frame 16 can maintain the support for the shell 15 as a whole through the shock-absorbing pad 17 during use, so that it can remain installed and reduce the impact of the environment. At the same time, it can cooperate with the shell 15 to provide a good protection effect on the whole.

[0061] Specifically, the driving module 14 includes a support shaft 148 fixedly connected to one side of the support frame 16, a driven wheel 144 is fixedly sleeved on the surface of the support shaft 148, two rotating parts 147 are rotatably connected to the surface of the support shaft 148, the two rotating parts 147 are jointly fixed with a fixed plate 141, the surface of the fixed plate 141 is fixedly connected to a motor 142, the output shaft of the motor 142 is fixed with a driving wheel 143, the surface of the driven wheel 144 is provided with a tooth groove 145 for meshing and transmitting with the driving wheel 143, and the surface of the support shaft 148 is fixedly connected to two clamps 146 for limiting the rotation of the rotating part 147.

[0062] By providing the support shaft 148, the support shaft 148 cooperates with the rotating member 147 to maintain a good overall cooperative activity effect, and at the same time, under the cooperation of the driving wheel 143 and the driven wheel 144, the motor 142 can drive the support shaft 148 to rotate stably inside the rotating member 147. By providing the clamp 146, the clamp 146 can maintain a good effect of limiting the rotating member 147 to maintain its rotation.

[0063] Specifically, the benchmark operating sound is the sound monitoring within a specified direction range, and the benchmark operating sound and the benchmark operating temperature are taken as the average values ​​of historical monitoring data.

[0064] Sound monitoring in a specified direction, by shielding sounds from other directions, such as Fig. 9 , showing the spatial layout in which the monitoring unit 1 is subject to audio interference from different directions, and performs detection in a specified direction and shields sounds from other directions.

[0065] Specifically, when an abnormal sound waveform appears in the benchmark operating sound waveform monitored in the specified direction, pre-processing is performed, and the sound source is located based on the abnormal sound. The temperature of the area is measured and compared with the historical benchmark operating temperature to determine the abnormal position and corresponding status information.

[0066] By locating the sound source based on abnormal sounds, measuring the temperature of the area and comparing it with the historical benchmark operating temperature, the abnormal location and corresponding status information are determined, making the overall autonomous judgment more powerful and easier to use.

[0067] Specifically, multiple monitoring units 1 are communicatively connected to a common fault self-checking system, which is integrated with a fault self-repairing unit. The fault self-checking system verifies fault information through a fault information verification module and then reports it to the emergency handling system for emergency handling response.

[0068] By setting up a fault self-detection system, which is a unique supporting self-detection system for different power equipment 2, the purpose here is to access the self-detection result data of the system to make it compatible. By setting up a fault self-repair unit, the fault self-repair unit can continue to try to self-repair during use, and monitor the repair status based on the infrared thermal imaging module 12, so that it can maintain an overall good coordination effect.

[0069] Finally, a few points should be explained: Although the present invention has been described in detail above with general descriptions and specific embodiments, on the basis of the present invention, the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fault detection system for electric power equipment, comprising a monitoring unit (1), characterized in that: The monitoring unit (1) comprises a central processing unit (13) for data processing, the input end of the central processing unit (13) is electrically connected to an infrared thermal imaging module (12) for thermal imaging, the input end of the central processing unit (13) is also electrically connected to an audio monitoring module (11), the output end of the central processing unit (13) is provided with a driving module (14) whose movement is precisely controlled by the central processing unit (13), and the output end of the central processing unit (13) is provided with a data transmission interface (18) for connection to a communication line; The input end of the central processor (13) is electrically connected to a capture module for recording instantaneous temperature changes, and the recorded data of the capture module is stored in a picture format, and the input end of the capture module is electrically connected to an imaging control module; The input end of the central processor (13) is electrically connected to an audio pre-processing module and an audio synthesis and repair module for reducing noise of abnormal sound waveforms, wherein the audio synthesis and repair module includes a module for mutual comparison and repair of audio data of the same waveform under the same time of multiple monitoring units (1); The imaging control module comprises a temperature sensor for monitoring the ambient temperature, and determines whether the overall surface temperature value of the device is in direct proportion to the change in the ambient temperature, and adjusts the overall imaging brightness value of the infrared thermal imaging module (12) accordingly; The monitoring unit (1) includes an audio monitoring module (11) and an infrared thermal imaging module (12) which are electrically connected to the surface of a central processing unit (13), and the audio monitoring module (11), the infrared thermal imaging module (12) and the central processing unit (13) are all installed in a shell (15), a support frame (16) is fixedly installed on the lower surface of the shell (15) through a plurality of shock-absorbing pads (17), one side of the support frame (16) is movably connected to the driving module (14), and a data transmission interface (18) electrically connected to the surface of the central processing unit (13) is fixed to the surface of the shell (15); The driving module (14) comprises a support shaft (148) fixedly connected to one side of the support frame (16); a driven wheel (144) is fixedly sleeved on the surface of the support shaft (148); two rotating members (147) are rotatably connected to the surface of the support shaft (148); a fixing plate (141) is fixedly fixed to the two rotating members (147); a motor (142) is fixedly connected to the surface of the fixing plate (141); a driving wheel (143) is fixedly fixed to the output shaft of the motor (142); a tooth groove (145) for meshing with the driving wheel (143) is provided on the surface of the driven wheel (144); and two clamps (146) for limiting the rotation of the rotating member (147) are fixedly connected to the surface of the support shaft (148).

2. A method for detecting a fault of an electric power device, using a fault detection system for an electric power device as claimed in claim 1, characterized in that: The following steps are involved: S1. Multiple monitoring units (1) are arranged at various angles around the power equipment (2), and the temperature and sound of the power equipment (2) are monitored in real time to obtain a reference operating sound and a reference operating temperature; S2, connecting the monitoring unit (1) to the fault self-detection system of the power equipment (2) to perform one-way data sharing and control at the software level; S3, the plurality of monitoring units (1) synchronously operate the same power equipment (2) in real time to automatically locate the fault point based on the sound changes and then perform temperature monitoring; S4. When the monitoring unit (1) performs positioning detection, it performs temperature monitoring of the positioning area, and makes a coordinated judgment on the fault self-detection system based on the temperature monitoring.

3. A method for detecting a fault in an electric power device according to claim 2, characterized in that: The reference operating sound is the sound monitoring within a specified direction range, and the reference operating sound and the reference operating temperature are taken as the average values ​​of historical monitoring data.

4. A method for detecting a fault in an electric power device according to claim 3, characterized in that: When an abnormal sound waveform appears in the benchmark operating sound waveform monitored in the specified direction, pre-processing is performed, and the sound source is located based on the abnormal sound. The temperature of the area is measured and compared with the historical benchmark operating temperature to determine the abnormal position and corresponding status information.

5. A method for detecting a fault in an electric power device according to claim 4, characterized in that: The plurality of monitoring units (1) are communicatively connected to a common fault self-checking system, the fault self-checking system is integrated with a fault self-repairing unit, and the fault self-checking system verifies the fault information through a fault information verification module and then reports the information to an emergency handling system for emergency handling response.

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