CN114994437A - Fault detection method and system for power equipment - Google Patents
Fault detection method and system for power equipment Download PDFInfo
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- CN114994437A CN114994437A CN202210583444.7A CN202210583444A CN114994437A CN 114994437 A CN114994437 A CN 114994437A CN 202210583444 A CN202210583444 A CN 202210583444A CN 114994437 A CN114994437 A CN 114994437A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 88
- 230000002159 abnormal effect Effects 0.000 claims abstract description 39
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- 238000003384 imaging method Methods 0.000 claims description 16
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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- G01J5/48—Thermography; Techniques using wholly visual means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
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Abstract
The invention discloses a fault detection method and a fault detection system of power equipment, and particularly relates to the technical field of electric power fault elimination, wherein environmental sounds are recorded through an audio monitoring module, sounds in non-specified directions are filtered, when the power equipment fails, a fault self-checking system is started, abnormal sound waveforms appear at the positions of the power equipment in the specified directions of the audio monitoring module, clear abnormal sound waveforms are extracted to identify sound sources of the abnormal sound waveforms, the audio monitoring module detection equipment of a plurality of distributed monitoring units is integrated aiming at the identified sound source positions to confirm the position of a fault source, and shooting and recording can be carried out through an infrared thermal image module The emergency treatment system is only needed.
Description
Technical Field
The invention relates to the technical field of electric power fault elimination, in particular to a fault detection method and system for electric power equipment.
Background
There has been a preliminary investigation of the reliability of all electrical devices worldwide. In the investigation, it was found that the mechanical induced failures accounted for about 70% of the MF and MF failures. By MF is meant a major failure, i.e. a failure that results in one or more of the basic functions of the power equipment. mf refers to a minor fault, i.e., a fault other than the major fault. In a second investigation of the electric power equipment of 63kV or more, it was found that the failure due to the mechanical operation accounted for 44% of all the major failures, and 39.4% of all the minor failures. It follows that mechanical failure is a major component thereof. It was also found in two previous investigations that only 4.7% of major faults and 25.1% of minor faults could be found in advance in routine examinations: another 8.1% major failure and 4.5% minor failure is due to improper repair, and thus it is known that there are significant problems and deficiencies in the periodic maintenance of electrical equipment. At present, the faults of power equipment in China are mainly shown as follows: abnormal vibration, corrosion, fatigue, wear, creep, plastic fracture, brittleness, insulation deterioration, and the like.
In the current field of power equipment fault detection, a thermal imaging mode is developed more mature, however, in the current thermal imaging application process, after overall deployment is completed, the flexibility of subsequent use is poor, and after a fault occurs, a fault point cannot be effectively and automatically locked, so that a large amount of time is still needed for troubleshooting in fault disposal, and the use of power equipment is influenced.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a fault detection method and system for power equipment, and the technical problem to be solved by the invention is as follows: at present, in the process of thermal imaging detection of power equipment, the problems that fault points cannot be automatically, effectively and accurately identified and positioned, a large amount of manual examination and checking are required, and the examination efficiency is extremely low exist.
In order to achieve the purpose, the invention provides the following technical scheme: a method of fault detection for electrical equipment, comprising the steps of:
and S1, arranging a plurality of monitoring units at multiple angles around the power equipment, and monitoring the real-time operation temperature and sound of the power equipment to acquire the reference operation sound and the reference operation temperature.
And S2, connecting the monitoring unit to a fault self-checking system of the power equipment, and performing unidirectional data sharing and control on a software level.
And S3, the monitoring units synchronously operate the same power equipment in real time, automatically position the fault point according to sound changes and then monitor the temperature.
And S4, when the monitoring unit carries out positioning detection, carrying out temperature monitoring on the positioning area, and carrying out matching judgment on the fault self-detection system according to the temperature monitoring.
As a further scheme of the invention: the reference operation sound is the sound monitoring within the designated orientation range, and the reference operation sound and the reference operation temperature value are historical monitoring data average values.
As a further scheme of the invention: and when the abnormal sound waveform appears in the reference operation sound waveform with the designated orientation monitoring, preprocessing is carried out, sound source positioning is carried out according to the abnormal sound, temperature measurement is carried out on the area, and the abnormal position and the corresponding state information are determined by comparing the temperature with the historical reference operation temperature.
As a further scheme of the invention: the monitoring units are in communication connection with 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 performs fault information verification through a fault information verifying module and then reports the fault information to an emergency disposal system for emergency disposal response.
As a further scheme of the invention: the monitoring unit comprises a central processing unit for data processing, the input end of the central processing unit is electrically connected with an infrared thermal imaging module for thermal imaging, the input end of the central processing unit is also electrically connected with an audio monitoring module, the output end of the central processing unit is provided with a driving module which is accurately controlled to move by the central processing unit, and the output end of the central processing unit is provided with a data transmission interface for connection of a communication line.
As a further scheme of the invention: the input end of the central processing unit is electrically connected with a capture module for shooting and recording instantaneous temperature change, shooting and recording data of the capture module is stored in a picture format, and the input end of the capture module is electrically connected with an imaging control module.
As a further scheme of the invention: the input end of the central processing unit is electrically connected with an audio frequency preprocessing module and an audio frequency synthesis and restoration module which are used for noise reduction of abnormal sound waveforms, and the audio frequency synthesis and restoration module comprises mutual comparison and restoration of the same waveform audio frequency data at the same time for a plurality of monitoring units.
As a further scheme of the invention: the imaging control module comprises a temperature sensor for monitoring the ambient temperature, and is used for judging whether the overall surface temperature value of the equipment is in a direct proportion relation with the ambient temperature change or not and adjusting the overall imaging brightness value of the thermal infrared image module according to the overall surface temperature value.
As a further scheme of the invention: the monitoring unit comprises an audio monitoring module and an infrared thermal image module which are electrically connected to the surface of the central processing unit together, the audio monitoring module, the infrared thermal image module and the central processing unit are all installed in a shell, a support frame is fixedly installed on the lower surface of the shell through a plurality of shock absorption pads, one side of the support frame is movably connected with the driving module, and a data transmission interface electrically connected to the surface of the central processing unit penetrates through the surface fixed on the shell.
As a further scheme of the invention: drive module includes the axle that props of fixed connection in strut one side, the fixed cover in surface that props the axle has connect from the driving wheel, the rotation in surface that props the axle is connected with two rotating parts, and two rotating parts are fixed with the fixed plate jointly, the fixed surface of fixed plate is connected with the motor, the output shaft of motor is fixed with the action wheel, offer on the surface from the driving wheel and be used for with the driven tooth's socket of action wheel meshing, the fixed surface that props the axle is connected with two and is used for spacing rotating part pivoted fixture.
The invention has the beneficial effects that:
1. when the monitoring unit is used, the audio monitoring module records environmental sound and filters sound in a non-specified direction, when the power equipment has a fault, the fault self-checking system is started to enable the self-checking flow of the power equipment to carry out fault self-checking, meanwhile, the audio monitoring module specifies that the position of the power equipment in the direction has abnormal sound waveforms, the audio monitoring module preprocesses the recording and extracts relatively clear abnormal sound waveforms to identify the sound source of the abnormal sound waveforms, and the audio monitoring modules of the distributed monitoring units detect the positions of the sound sources aiming at the identification to enable the audio monitoring modules to confirm the position of the fault source, and simultaneously, the infrared thermal imaging module can shoot and record, so that the mode can keep timely response when the fault occurs and can quickly locate the position of the fault point, integrating the fault state of the fault point and the state information of the fault self-checking system through a fault information checking module and sending the integrated state information to an emergency disposal system;
2. when the invention is used, the monitoring unit carries out real-time monitoring on the direction of the electric power equipment through the infrared thermal imaging module when the electric power equipment normally operates, when the abnormal sound waveform is detected to appear at the position of the electrical equipment, the audio frequency preprocessing is carried out by carrying out a plurality of detection units, by eliminating the sound waveform of the reference operation, amplifying the audio frequency of the residual waveform, extracting the abnormal sound waveform, synchronously matching with the positioning of the sound source, marking the temperature information of the position by the infrared thermal imaging module, sending the monitored fault information to the fault self-checking system, and checking by the fault information checking module, comparing whether the fault data are matched with the fault codes monitored by the fault self-checking system, and enabling a disposal worker to quickly and accurately grasp fault points, fault reasons and states through the emergency disposal system, so that quick and accurate disposal operation is facilitated;
3. the system comprises a central processing unit, an infrared thermal image module, a fault self-checking system and a fault self-checking system, wherein the central processing unit is arranged and used for monitoring the room temperature of the infrared thermal image module through an imaging control module and a capturing module which are integrated on the surface, judging whether the overall surface temperature value of the equipment is normal or not according to the monitoring result, adjusting the overall imaging brightness value of the infrared thermal image module according to the monitoring result, automatically adjusting the display brightness according to the overall imaging brightness value, assisting in accurately and quickly finding out abnormal areas, identifying short-time abnormal sound sources which are abnormal in some instantaneous positions of the electric equipment by the capturing module, storing pictures of the infrared thermal image module at the positions of the sound sources, and sending fault self-checking requests to the fault self-checking system through the central processing unit, so that the detection comprehensiveness of faults is further improved;
4. according to the invention, through the drive module and the central processing unit, the central processing unit controls the motor through the position confirmation aiming at the sound source, when the motor rotates through the driving wheel, the driving wheel drives the driven wheel to start rotating through the tooth socket, and the driven wheel drives the supporting shaft and the supporting frame to deflect under the support of the rotating piece, so that the whole direction of the motor is changed.
Drawings
FIG. 1 is a schematic view of the overall arrangement of the present invention;
FIG. 2 is a schematic diagram of the overall system architecture of the present invention;
FIG. 3 is a schematic diagram of the overall system of the monitoring unit according to the present invention;
FIG. 4 is a perspective view of a monitoring unit according to the present invention;
FIG. 5 is a schematic view of another perspective view of a monitoring unit according to the present invention;
FIG. 6 is a schematic cross-sectional perspective view of a monitoring unit according to the present invention;
FIG. 7 is a schematic cross-sectional view of a driving module according to the present invention;
FIG. 8 is a perspective cross-sectional view of a support shaft according to the present invention;
FIG. 9 is a schematic diagram of the monitoring unit of the present invention being interfered by environmental noise;
FIG. 10 is a schematic diagram of an audio monitoring module for pre-processing an abnormal sound waveform according to the present invention;
fig. 11 is a schematic diagram of a fault point locking state in an application state of the power equipment.
In the figure: 1. a monitoring unit; 2. an electrical device; 3. an interference source; 11. an audio monitoring module; 12. an infrared thermal image module; 13. a central processing unit; 14. a drive module; 141. a fixing plate; 142. a motor; 143. a driving wheel; 144. a driven wheel; 145. a tooth socket; 146. a fixture; 147. a rotating member; 148. a supporting shaft; 15. a housing; 16. a support frame; 17. a shock pad; 18. and a data transmission interface.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The sound source identification of the designated orientation based on the monitoring unit 1 described herein is not presented in detail in this description as a prior art.
Example 1:
a method of fault detection of electrical equipment, comprising the steps of:
s1, arranging a plurality of monitoring units 1 at multiple angles around the power equipment 2, and monitoring the real-time operation temperature and sound of the power equipment 2 to obtain the reference operation sound and the reference operation temperature.
And S2, accessing the monitoring unit 1 to a fault self-checking system of the power equipment 2, and performing unidirectional data sharing and control on a software level.
And S3, the multiple monitoring units 1 synchronously operate the same power equipment 2 in real time, automatically position the fault point according to sound changes and then monitor the temperature.
S4, when the monitoring unit 1 carries out positioning detection, the temperature monitoring is carried out on the positioning area, and the fault self-detection system is judged in a matching way according to the temperature monitoring.
The audio monitoring module 11 records environmental sound, filters sound in a non-specified orientation, when the power equipment 2 fails, the fault self-checking system is started to enable the self-checking flow of the power equipment 2 to perform fault self-checking, and meanwhile, abnormal sound waveforms appear at the positions of the power equipment 2 in the specified orientation of the audio monitoring module 11 to preprocess the recorded sound, and clear abnormal sound waveforms are extracted to identify the sound sources of the abnormal sound waveforms, and the audio monitoring modules 11 of the multiple distributed monitoring units 1 detect the sound sources of the equipment aiming at the identified positions to confirm the positions of the fault sources, and simultaneously, shooting and recording can be performed through the infrared thermal imaging module 12, so that timely response can be kept when the fault occurs, the positions of the fault points can be rapidly located, and the fault state information of the fault points and the fault self-checking system are integrated and sent to the fault information checking module through the fault information checking module An emergency disposal system.
Example 2:
based on example 1, the scheme is further as follows:
when the power equipment 2 normally operates, the monitoring unit 1 carries out real-time monitoring on the direction of the power equipment 2 through the infrared thermal imaging module 12, when the abnormal sound waveform is detected to appear at the position of the electric equipment 2, the audio frequency preprocessing is carried out by carrying out a plurality of detection units, by eliminating the sound waveform of the reference operation, amplifying the audio frequency of the residual waveform, extracting the abnormal sound waveform, synchronously matching with the positioning of the sound source, marking the temperature information of the position by the thermal infrared image module 12, sending the fault information monitored by the thermal infrared image module to a fault self-checking system, and checking by a fault information checking module, whether its fault data of contrast and trouble self-checking system monitoring fault code match to through emergent processing system, make its processing personnel can be quick accurate, the direct trouble point of mastering, and trouble reason and state, be convenient for quick accurate processing operation.
Example 3:
for example 1 and example 2, further:
the central processing unit 13 monitors the room temperature of the thermal infrared image module 12 through the imaging control module and the capturing module integrated on the surface, judges whether the overall surface temperature value of the equipment is normal according to the judgment, adjusts the overall imaging brightness value of the thermal infrared image module 12 according to the judgment, automatically adjusts the display brightness according to the adjustment, assists in accurately and quickly finding out abnormal areas, identifies short-time abnormal sound sources in the positions of some instantaneous electric equipment 2 by the capturing module, retains pictures of the thermal infrared image module 12 in the positions of the sound sources, and sends fault self-checking requests to the fault self-checking system through the central processing unit 13, so that the detection comprehensiveness of faults is further improved.
Specifically, the monitoring unit 1 includes a central processing unit 13 for data processing, an input end of the central processing unit 13 is electrically connected to an infrared thermal imaging module 12 for thermal imaging, an input end of the central processing unit 13 is also electrically connected to an audio monitoring module 11, an output end of the central processing unit 13 is provided with a driving module 14 which is precisely controlled to move by the driving module, and an output end of the central processing unit 13 is provided with a data transmission interface 18 for connection of a communication line.
Through setting up central processing unit 13, central processing unit 13 can keep the coordination between each module to the detecting element, through setting up thermal infrared imagery module 12, can carry out thermal imaging and handle, through setting up data transmission interface 18, data transmission interface 18 can conveniently carry out the data flow between whole data and the power equipment 2 system and transfer and the sharing.
Specifically, the input end of the central processing unit 13 is electrically connected to a capture module for capturing and recording instantaneous temperature changes, the captured and 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.
Through setting up the capture module, the capture module can record the temperature change of instantaneous shooting and recording to keep the shelves with the picture format, and then the temperature change of carrying out the passage time can be recorded, supplementary follow-up staff trouble spot's investigation, location that can be quick accurate.
By arranging the imaging control module which comprises a temperature sensor, the room temperature is monitored, whether the overall surface temperature value of the equipment is normal or not is judged according to the room temperature, the overall imaging brightness value of the thermal infrared image module 12 is adjusted according to the overall surface temperature value, the display brightness is self-adjusted, and the abnormal area is accurately and quickly found out in an auxiliary mode.
Specifically, the input end of the central processing unit 13 is electrically connected to an audio preprocessing module and an audio synthesis and restoration module for denoising abnormal sound waveforms, and the audio synthesis and restoration module includes mutual comparison and restoration of the same waveform audio data at the same time for the plurality of monitoring units 1.
By arranging the audio frequency preprocessing module, the audio frequency preprocessing module is shown in detail in fig. 10, and it is shown that the difference of the front and rear frequency spectrograms of the audio frequency preprocessing is visible, the abnormal sound waveform is extracted in a targeted manner by taking the reference operation sound waveform as a reference basis, and then the abnormal frequency band is displayed, so that the whole abnormal sound waveform can be obviously cleared.
Specifically, the imaging control module includes a temperature sensor for monitoring the ambient temperature, and determines whether the overall surface temperature value of the device is in a direct proportional relationship with the ambient temperature change, and adjusts the overall imaging brightness value of the thermal infrared image module 12 accordingly. As shown in fig. 11, in the picture, since the whole power device 2 is compared with the ambient temperature, the whole temperature is determined based on the ambient temperature, and the brightness of the picture is adjusted, so that the stability of the whole display is guaranteed, and the abnormal position can be known more intuitively.
Specifically, the common electric connection of audio monitoring module 11 and the thermal infrared image module 12 that monitoring unit 1 includes is on central processing unit 13 surface, and audio monitoring module 11, thermal infrared image module 12 and central processing unit 13 all install in a casing 15, the lower surface of casing 15 has strut 16 through a plurality of shock pad 17 fixed mounting, one side and the 14 swing joint of drive module of strut 16, central processing unit 13 surface electric connection's data transmission interface 18 runs through the surface of being fixed in casing 15.
Through setting up strut 16, strut 16 can keep the support of needle to wholly passing through shock pad 17 to casing 15 when using, makes it can keep the installation back, reduces the influence that receives the environment, cooperates casing 15 simultaneously and can carry out fine protection effect to its whole.
Specifically, the driving module 14 includes a supporting shaft 148 fixedly connected to one side of the supporting frame 16, a driven wheel 144 is fixedly sleeved on the surface of the supporting shaft 148, two rotating members 147 are rotatably connected to the surface of the supporting shaft 148, a fixing plate 141 is jointly 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 fixed to an output shaft of the motor 142, a tooth groove 145 used for being meshed with the driving wheel 143 for transmission is formed in the surface of the driven wheel 144, and two clamps 146 used for limiting the rotation of the rotating members 147 are fixedly connected to the surface of the supporting shaft 148.
Through the arrangement of the supporting shaft 148, the supporting shaft 148 is matched with the rotating part 147, so that the overall good matching activity effect can be kept, and meanwhile, under the matching of the driving wheel 143 and the driven wheel 144, the motor 142 can drive the supporting shaft 148 to stably rotate in the rotating part 147. By providing the clamp 146, the clamp 146 can maintain the effect of limiting the rotation member 147 to keep rotating.
Specifically, the reference operation sound is a sound monitoring within the designated orientation range, and the reference operation sound and the reference operation temperature value are historical monitoring data average values.
The sound monitoring of the designated orientation, by shielding the sound in other directions, as shown in fig. 9, shows a spatial layout that the monitoring unit 1 is interfered by audio in different directions, and detects the designated orientation, and shields the sound in other directions.
Specifically, when an abnormal sound waveform occurs in a reference operation sound waveform designated for monitoring, preprocessing is performed, sound source positioning is performed according to the abnormal sound, temperature measurement is performed on the area, and the area is compared with the historical reference operation temperature to determine the abnormal position and the corresponding state information.
The sound source is positioned according to the abnormal sound, the temperature of the area is measured, and the abnormal position and the corresponding state information are determined by comparing the temperature with the historical reference operating temperature, so that the whole automatic judgment performance is stronger, and the use is more convenient.
Specifically, the multiple monitoring units 1 are in communication connection with a common fault self-checking system, the fault self-checking system is integrally provided with a fault self-repairing unit, and the fault self-checking system verifies fault information through a fault information verifying module and then reports the verified fault information to an emergency disposal system for emergency disposal response.
Through setting up the trouble self-checking system, the trouble self-checking system is the supporting self-checking system that is unique to different power equipment 2, and the self-checking result data that here aims at inserting this system makes it carry out compatible use, through setting up trouble selfreparing unit, trouble selfreparing unit can keep trying the selfreparing when using to monitor the repair state according to thermal infrared image module 12, make it can keep whole good cooperation effect.
The points to be finally explained are: although the present invention has been described in detail with reference to the general description and the specific embodiments, on the basis of the present invention, the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A fault detection method of an electric power device is characterized by comprising the following steps:
s1, arranging a plurality of monitoring units (1) at multiple angles around the power equipment (2), and monitoring the real-time operating temperature and sound of the power equipment (2) to acquire reference operating sound and reference operating temperature;
s2, connecting the monitoring unit (1) to a fault self-checking system of the power equipment (2) to perform unidirectional data sharing and control in a software layer;
s3, the monitoring units (1) synchronously operate the same power equipment (2) in real time, automatically position the fault point according to sound changes and then monitor the temperature;
s4, when the monitoring unit (1) carries out positioning detection, temperature monitoring is carried out on the positioning area, and the fault self-detection system is judged in a matching mode according to the temperature monitoring.
2. The fault detection method of an electric power apparatus according to claim 1, characterized in that: the reference operation sound is the sound monitoring within the designated orientation range, and the reference operation sound and the reference operation temperature value are historical monitoring data average values.
3. The fault detection method of an electric power apparatus according to claim 2, characterized in that: and when the abnormal sound waveform appears in the reference operation sound waveform with the designated orientation monitoring, preprocessing is carried out, sound source positioning is carried out according to the abnormal sound, temperature measurement is carried out on the area, and the abnormal position and the corresponding state information are determined by comparing the temperature with the historical reference operation temperature.
4. The fault detection method of an electric power apparatus according to claim 2, characterized in that: the monitoring units (1) are in communication connection with 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 performs fault information verification through a fault information verifying module and then reports the fault information to an emergency disposal system for emergency disposal response.
5. A fault detection system of an electric power equipment for use in a fault detection method of the electric power equipment according to any one of claims 1 to 4, 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 with an infrared thermal imaging module (12) for thermal imaging, the input end of the central processing unit (13) is also electrically connected with an audio monitoring module (11), the output end of the central processing unit (13) is provided with a driving module (14) which is precisely controlled to move, and the output end of the central processing unit (13) is provided with a data transmission interface (18) for communication line connection.
6. The fault detection system for the electric power equipment according to claim 5, wherein: the input end of the central processing unit (13) is electrically connected with a capturing module for shooting and recording instantaneous temperature change, shooting and recording data of the capturing module is stored in a picture format, and the input end of the capturing module is electrically connected with an imaging control module.
7. The fault detection system for electric power equipment according to claim 6, wherein: the input end of the central processing unit (13) is electrically connected with an audio frequency preprocessing module and an audio frequency synthesis repairing module which are used for noise reduction of abnormal sound waveforms, and the audio frequency synthesis repairing module comprises mutual comparison repairing of the same waveform audio data which are used for a plurality of monitoring units (1) at the same time.
8. The fault detection system for electric power equipment according to claim 6, wherein: the imaging control module comprises a temperature sensor for monitoring the ambient temperature, and is used for judging whether the overall surface temperature value of the equipment is in a direct proportion relation with the ambient temperature change or not and adjusting the overall imaging brightness value of the infrared thermal imaging module (12) according to the overall surface temperature value.
9. The fault detection system for electric power equipment according to claim 8, wherein: the monitoring unit (1) comprises an audio monitoring module (11) and an infrared thermal image module (12) which are electrically connected to the surface of a central processing unit (13) together, the audio monitoring module (11), the infrared thermal image 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 absorption pads (17), one side of the support frame (16) is movably connected with a driving module (14), and a data transmission interface (18) of the surface electric connection of the central processing unit (13) penetrates through the surface of the shell (15).
10. The fault detection system for electric power equipment according to claim 9, wherein: the driving module (14) comprises a supporting shaft (148) fixedly connected to one side of a supporting frame (16), a driven wheel (144) is sleeved on the surface of the supporting shaft (148) in a fixed mode, two rotating pieces (147) are rotatably connected to the surface of the supporting shaft (148), a fixing plate (141) is jointly fixed to the two rotating pieces (147), a motor (142) is fixedly connected to the surface of the fixing plate (141), a driving wheel (143) is fixed to an output shaft of the motor (142), tooth grooves (145) used for being meshed with the driving wheel (143) in a transmission mode are formed in the surface of the driven wheel (144), and two clamping tools (146) used for limiting the rotation pieces (147) to rotate are fixedly connected to the surface of the supporting shaft (148).
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