CN105589020A - Detector and method used for power distribution equipment inspection and live-line detection - Google Patents

Detector and method used for power distribution equipment inspection and live-line detection Download PDF

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Publication number
CN105589020A
CN105589020A CN201610054311.5A CN201610054311A CN105589020A CN 105589020 A CN105589020 A CN 105589020A CN 201610054311 A CN201610054311 A CN 201610054311A CN 105589020 A CN105589020 A CN 105589020A
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thermal imagery
signal
detector
sensor
unit
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CN201610054311.5A
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CN105589020B (en
Inventor
姚森敬
黄志伟
黄超
朱正国
杨开
龚鹏
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深圳供电局有限公司
珠海市伊特高科技有限公司
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1209Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1218Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays

Abstract

The invention provides a detector used for power distribution equipment inspection and live-line detection. The detector comprises a composite sensor, a preposed processing unit, a thermal image collection unit, a map analysis unit and an analysis control and communication unit which are connected in sequence. The composite sensor is composed of an ultrasonic sensor, an earth electric wave sensor and an infrared thermal image sensor and is used for collecting signals and converting the signals into analog electric signals. The preposed processing unit is used for carrying out filtering, amplification and denosing processing on the analog electric signals. The thermal image collection unit synchronously obtains the processed analog electric signals and forms mixed digital codes according to preset collection parameters and signal coding rules. The map analysis unit decodes the mixed digital codes and forms a visual partial-discharge positioning thermal image spectrogram. The analysis control and communication unit displays the thermal image spectrogram and outputs the thermal image spectrogram to external equipment. According to the invention, comprehensive evaluation is carried out based on detection data of a plurality of kinds of detection methods, the misjudgment rate of the detection result is lowered, the detector is convenient to carry, and the difficulty of live-line detection work is lowered.

Description

A kind ofly patrol and examine and detector and method with electro-detection for controller switching equipment
Technical field
The present invention relates to that controller switching equipment is patrolled and examined and detection technique field, relate in particular to and a kind ofly patrol and examine and detector and method with electro-detection for controller switching equipment.
Background technology
For solving growing power demands, improve power supply reliability, the continuous import of advanced technology of power department, strengthens O&M and management to controller switching equipment, ultrasonic wave, the detection method such as electric wave, infrared thermal imaging, become controller switching equipment and maked an inspection tour and necessary means with electro-detection. But, the detector detecting for controller switching equipment insulation is still in the starting stage, although ultrasonic Detection Method, the insulation detection technique such as electric wave detection method, infrared thermal imaging detection method had general application at home and abroad, and obtain certain effect, but it is lower to detect intelligent degree, make judging still taking artificial experience as main of controller switching equipment dielectric level and running status.
At the scene in actual detection, adopt above-mentioned three kinds of methods to detect insulating properties and the state analysis of controller switching equipment, all have the following disadvantages: one, because the testing result of all kinds of detectors all can only provide single index and threshold value alarm, make comprehensive judgement rely on artificial experience, cause the accuracy of testing result, reliability to be protected; Two, due to all kinds of detectors independent use in testing process, making to detect data cannot be synchronous, and due to the otherness of background environment under different time sections, cause between every detection data (comprise ultrasonic wave local discharging level, electric wave local discharging level, infra-red heat liter warm in nature etc.) comparativity poor, be difficult to carry out comprehensive assessment, easily cause testing result erroneous judgement; Three, detector carries too much and need repeatedly operate, and has increased the difficulty of charged testing.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, provide a kind of and patrol and examine and detector and method with electro-detection for controller switching equipment, detection data that can comprehensive multiple detection method are carried out comprehensive assessment, reduce testing result False Rate, and carrying convenience, reduces the difficulty of charged testing.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of and has patrolled and examined and detector with electro-detection for controller switching equipment, and described detector comprises the compound sensor, pre-process unit, thermal imagery collecting unit, atlas analysis unit and analysis and Control and the communication unit that sequentially connect; Wherein,
Described compound sensor by ultrasonic sensor, radio wave sensor and infrared thermal imagery sensor form, for gather ultrasonic signal that controller switching equipment produces, electric wave signal and infrared thermal imagery signal, and by the described ultrasonic signal collecting, electric wave signal and infrared thermal imagery signal convert respectively corresponding analog electrical signal to;
Described pre-process unit, carries out respectively filter and amplification and denoising for the multiple analog electrical signals to after described conversion;
Described thermal imagery collecting unit, for synchronously obtaining described multiple analog electrical signals after treatment, and by default acquisition parameter and Signal coding rule, forms hybrid digital coding by the described multiple analog electrical signals that synchronously get;
Described atlas analysis unit, for the described hybrid digital coding of decoding, and forms visual partial discharge location thermal imagery spectrogram;
Described analysis and Control and communication unit, for showing described thermal imagery spectrogram, and export to external equipment by described thermal imagery spectrogram.
Wherein, the ultrasonic sensor in described compound sensor, radio wave sensor and infrared thermal imagery sensor integrate by micro-electromechanical system (MEMS) technology.
Wherein, the sample magnitude scope of described ultrasonic sensor is-20~65dBmV, and centre frequency is 40kHz; The sample magnitude scope of described ground radio wave sensor is 0~60dBmV, and signal bandwidth is 3~60MHz; The sample magnitude scope of described infrared thermal imagery sensor is 0 DEG C ~ 100 DEG C, and thermal imagery pixel is 320*240 pixel.
Wherein, described pre-process unit comprises for the first filter amplification circuit of ultrasonic signal filter and amplification and denoising with for the second filter amplification circuit of ground electric wave signal filter and amplification and denoising; Wherein,
The narrow band filter that described the first filter amplification circuit is 40 ± 2kHz by frequency filtering and employing power are that among 60dB, 80dB, 100dB, the signal amplifier of one forms;
The broadband filter that described the second filter amplification circuit is 3-60MHz by frequency filtering and the two-stage signal amplifier that adopts power to be respectively 20dB and 40dB form.
Wherein, described thermal imagery collecting unit is formed by on-site programmable gate array FPGA.
Wherein, described atlas analysis unit is formed by Digital Signal Processing dsp chip.
Wherein, described analysis and Control and communication unit comprise LCD MODULE, wireless communication module and the wire communication module for showing described thermal imagery spectrogram; Wherein,
Described wireless communication module comprises among the sub-communication module of GPRS, Zigbee communicator module, WIFI communicator module and Bluetooth communication submodule its one or more;
Described wire communication module comprises among 10/100BASE-T self adaptation Ethernet submodule, RS-485 interface sub-module, RS-232 interface submodule, optical fiber interface submodule its one or more.
Wherein, described detector also comprises thermal imagery coded stack, and described thermal imagery coded stack is arranged between described thermal imagery collecting unit and described atlas analysis unit, for storing described hybrid digital coding.
The embodiment of the present invention also provides a kind of and has patrolled and examined and method with electro-detection for controller switching equipment, and it realizes on aforesaid detector, and described method comprises:
Gather ultrasonic signal that controller switching equipment produces, electric wave signal and infrared thermal imagery signal, and by the described ultrasonic signal collecting, electric wave signal and infrared thermal imagery signal convert respectively corresponding analog electrical signal to;
Multiple analog electrical signals after described conversion are carried out respectively to filter and amplification and denoising;
Synchronously obtain described multiple analog electrical signals after treatment, and by default acquisition parameter and Signal coding rule, the described multiple analog electrical signals that synchronously get are formed to hybrid digital coding;
The described hybrid digital of decoding is encoded, and forms visual partial discharge location thermal imagery spectrogram; And
Show described thermal imagery spectrogram, and described thermal imagery spectrogram is exported to external equipment.
Wherein, described partial discharge location thermal imagery spectrogram comprises that the rejected region information, defect type information of described controller switching equipment, office put status information and insulation information.
Implement the embodiment of the present invention, there is following beneficial effect:
1, in embodiments of the present invention, due to the compound sensor of detector be integrated with ultrasonic sensor, radio wave sensor and infrared thermal imagery sensor, make detector carrying convenience and can carry out multipurpose use, avoid carrying the disadvantage of too much detector, and can pass through the detection data of the synchronous multiple detection method of thermal imagery collecting unit, carry out comprehensive assessment to detecting data, reduced testing result False Rate, and reduced the difficulty of charged testing;
2, in embodiments of the present invention, because the atlas analysis unit of detector can form visual thermal imagery spectrogram, and can show and export to external equipment and further analyze by analysis and Control and communication unit, thereby improve the intelligent level detecting.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, the accompanying drawing that obtains other according to these accompanying drawings still belongs to category of the present invention.
Fig. 1 is a kind ofly patrolling and examining and the system architecture schematic diagram of detector with electro-detection for controller switching equipment that the embodiment of the present invention provides;
Fig. 2 is a kind ofly patrolling and examining and the sampling flow chart of detector thermal imagery sampling unit application scenarios with electro-detection for controller switching equipment that the embodiment of the present invention provides;
Fig. 3 is a kind ofly patrolling and examining and the flow chart of method with electro-detection for controller switching equipment that the embodiment of the present invention provides.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, in the embodiment of the present invention, what provide a kind ofly patrols and examines and detector with electro-detection for controller switching equipment, and described detector comprises compound sensor 1, pre-process unit 2, thermal imagery collecting unit 3, atlas analysis unit 4 and the analysis and Control and the communication unit 5 that sequentially connect; Wherein,
Compound sensor 1 by ultrasonic sensor, radio wave sensor and infrared thermal imagery sensor form, for gather ultrasonic signal that controller switching equipment produces, electric wave signal and infrared thermal imagery signal, and by the ultrasonic signal collecting, electric wave signal and infrared thermal imagery signal convert respectively corresponding analog electrical signal to;
Pre-process unit 2, for carrying out respectively filter and amplification and denoising to the multiple analog electrical signals after conversion;
Thermal imagery collecting unit 3, for synchronously obtaining multiple analog electrical signal after treatment, and by default acquisition parameter and Signal coding rule, forms hybrid digital coding by the multiple analog electrical signals that synchronously get;
Atlas analysis unit 4, for the hybrid digital coding of decoding, and forms visual partial discharge location thermal imagery spectrogram;
Analysis and Control and communication unit 5, for showing thermal imagery spectrogram, and export to external equipment by thermal imagery spectrogram.
In embodiments of the present invention, compound sensor 1 by ultrasonic sensor, radio wave sensor and infrared thermal imagery sensor three form, integrate by micro-electromechanical system (MEMS) (MicroelectromechanicalSystems) technology, make compound sensor 1 can in narrow space, be integrated with three kinds of sensors. It should be noted that this compound sensor 1 adopts special screening arrangement to process, can suppress electromagnetic interference, prevent crosstalking between multiple signals.
In one embodiment, compound sensor 1 comprise ultrasonic sensor, radio wave sensor and these three kinds of sensors of infrared thermal imagery sensor; Wherein, the sample magnitude scope of ultrasonic sensor is-20~65dBmV, and centre frequency is 40kHz; The sample magnitude scope of ground radio wave sensor is 0~60dBmV, and signal bandwidth is 3~60MHz; The sample magnitude scope of infrared thermal imagery sensor is 0 DEG C ~ 100 DEG C, and thermal imagery pixel is 320*240 pixel.
For anti-electromagnetic interference, clutter reduction, thereby the analog electrical signal of outputting high quality, therefore pre-process unit 2 comprises for the first filter amplification circuit of ultrasonic signal filter and amplification and denoising with for the second filter amplification circuit of ground electric wave signal filter and amplification and denoising; Wherein,
The narrow band filter that the first filter amplification circuit is 40 ± 2kHz by frequency filtering and employing power are that among 60dB, 80dB, 100dB, the signal amplifier of one forms;
The broadband filter that the second filter amplification circuit is 3-60MHz by frequency filtering and the two-stage signal amplifier that adopts power to be respectively 20dB and 40dB form.
In embodiments of the present invention, thermal imagery collecting unit 3 is formed by on-site programmable gate array FPGA, this FPGA configurable logic blocks CLB, input/output module IOB and interconnector, realize the high-speed synchronous collection to multiple analog electrical signals after treatment, by default acquisition parameter and Signal coding rule, output hybrid digital coding.
In one embodiment, as shown in Figure 2, for the sampling flow chart in thermal imagery collecting unit 3 application scenarios, for the different insulating signal of synchronous acquisition, thermal imagery collecting unit 3 adopts high speed time-division synchronous sampling technique, pointwise gather infrared thermal imagery signal, ultrasonic wave local discharge signal, electric wave local discharge signal.
Red heat imaging pixel is 320x240=76800, picture frame frequency 25Hz, and sample frequency is 76800x25=1.92MHz; Ultrasonic wave local discharge signal sampling centre frequency is 40kHz, and according to Nyquist law, minimum undistorted sample frequency is 80kHz; Ground electric wave local discharge signal acquisition bandwidth is generally 3-60MHz, for reducing volume of the present invention, adopts envelope-sampling technology, and sample frequency is 2MHz.
Therefore, thermal imagery collecting unit 3 sample frequencys that FPGA forms are designed to 20MHz, for the high-fidelity synchronized sampling of infrared thermal imagery signal, ultrasonic wave local discharge signal and ground electric wave local discharge signal,
In embodiments of the present invention, atlas analysis unit 4 is formed by Digital Signal Processing dsp chip, put the information such as status information (as the order of severity is put in office) and insulation information (as insulation is evaluated) by analyzing rejected region information (as the particular location of insulation defect), defect type information (as insulation defect type), the office of controller switching equipment, form visual partial discharge location thermal imagery spectrogram.
In embodiments of the present invention, analysis and Control and communication unit 5 comprise LCD MODULE, wireless communication module and the wire communication module for showing thermal imagery spectrogram; Wherein,
Wireless communication module comprises among the sub-communication module of GPRS, Zigbee communicator module, WIFI communicator module and Bluetooth communication submodule its one or more;
Wire communication module comprises among 10/100BASE-T self adaptation Ethernet submodule, RS-485 interface sub-module, RS-232 interface submodule, optical fiber interface submodule its one or more.
In embodiments of the present invention, detector also comprises thermal imagery coded stack 6, and thermal imagery coded stack 6 is arranged between thermal imagery collecting unit 3 and atlas analysis unit 4, for storing hybrid digital coding, and stores frame by frame.
Patrolling and examining and operation principle with electro-detection is for controller switching equipment in the embodiment of the present invention: compound sensor 1 gather ultrasonic signal that controller switching equipment produces, electric wave signal and temperature field distribution signal (obtaining by infrared thermal imagery sensor), and by the ultrasonic signal collecting, electric wave signal and temperature field distribution signal be converted to respectively corresponding discernible analog electrical signal, carry out filtering, amplification and denoising by pre-process unit 2, form high-quality analog electrical signal; By thermal imagery collecting unit 3, the mixed signal of pre-process is carried out to ALTERNATE SAMPLING and digital hybrid coding, and apply thermal imagery coded stack 6 and store; By atlas analysis unit 4, the digital hybrid coding of storage is carried out to Treatment Analysis, form visual partial discharge location thermal imagery spectrogram; Carry out data display, gatherer process is controlled and image data, analysis result are carried out to communication transfer by analysis and Control and communication unit 5.
As shown in Figure 3, in the embodiment of the present invention, what provide a kind ofly patrols and examines and method with electro-detection for controller switching equipment, and it realizes on aforesaid detector, and described method comprises:
Step S1, gather ultrasonic signal that controller switching equipment produces, electric wave signal and infrared thermal imagery signal, and by the described ultrasonic signal collecting, electric wave signal and infrared thermal imagery signal convert respectively corresponding analog electrical signal to;
Step S2, the multiple analog electrical signals after described conversion are carried out respectively to filter and amplification and denoising;
Step S3, synchronously obtain described multiple analog electrical signals after treatment, and by default acquisition parameter and Signal coding rule, the described multiple analog electrical signals that synchronously get are formed to hybrid digitals coding;
Step S4, the described hybrid digital coding of decoding, and form visual partial discharge location thermal imagery spectrogram;
Step S5, show described thermal imagery spectrogram, and described thermal imagery spectrogram is exported to external equipment.
Wherein, described partial discharge location thermal imagery spectrogram comprises that the rejected region information, defect type information of described controller switching equipment, office put status information and insulation information.
Implement the embodiment of the present invention, there is following beneficial effect:
1, in embodiments of the present invention, due to the compound sensor of detector be integrated with ultrasonic sensor, radio wave sensor and infrared thermal imagery sensor, make detector carrying convenience and can carry out multipurpose use, avoid carrying the disadvantage of too much detector, and can pass through the detection data of the synchronous multiple detection method of thermal imagery collecting unit, carry out comprehensive assessment to detecting data, reduced testing result False Rate, and reduced the difficulty of charged testing;
2, in embodiments of the present invention, because the atlas analysis unit of detector can form visual thermal imagery spectrogram, and can show and export to external equipment and further analyze by analysis and Control and communication unit, thereby improve the intelligent level detecting.
One of ordinary skill in the art will appreciate that all or part of step realizing in above-described embodiment method is can carry out the hardware that instruction is relevant by program to complete, described program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk, CD etc.
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to the claims in the present invention, still belongs to the scope that the present invention is contained.

Claims (10)

1. patrol and examine for controller switching equipment and detector with electro-detection for one kind, it is characterized in that, described detector comprises compound sensor (1), pre-process unit (2), thermal imagery collecting unit (3), atlas analysis unit (4) and the analysis and Control and the communication unit (5) that sequentially connect; Wherein,
Described compound sensor (1) by ultrasonic sensor, radio wave sensor and infrared thermal imagery sensor form, for gather ultrasonic signal that controller switching equipment produces, electric wave signal and infrared thermal imagery signal, and by the described ultrasonic signal collecting, electric wave signal and infrared thermal imagery signal convert respectively corresponding analog electrical signal to;
Described pre-process unit (2), carries out respectively filter and amplification and denoising for the multiple analog electrical signals to after described conversion;
Described thermal imagery collecting unit (3), for synchronously obtaining described multiple analog electrical signals after treatment, and by default acquisition parameter and Signal coding rule, forms hybrid digital coding by the described multiple analog electrical signals that synchronously get;
Described atlas analysis unit (4), for the described hybrid digital coding of decoding, and forms visual partial discharge location thermal imagery spectrogram;
Described analysis and Control and communication unit (5), for showing described thermal imagery spectrogram, and export to external equipment by described thermal imagery spectrogram.
2. detector as claimed in claim 1, is characterized in that, ultrasonic sensor in described compound sensor (1), radio wave sensor and infrared thermal imagery sensor integrate by micro-electromechanical system (MEMS) technology.
3. detector as claimed in claim 2, is characterized in that, the sample magnitude scope of described ultrasonic sensor is-20~65dBmV, and centre frequency is 40kHz; The sample magnitude scope of described ground radio wave sensor is 0~60dBmV, and signal bandwidth is 3~60MHz; The sample magnitude scope of described infrared thermal imagery sensor is 0 DEG C ~ 100 DEG C, and thermal imagery pixel is 320*240 pixel.
4. detector as claimed in claim 1, it is characterized in that, described pre-process unit (2) comprises for the first filter amplification circuit of ultrasonic signal filter and amplification and denoising with for the second filter amplification circuit of ground electric wave signal filter and amplification and denoising; Wherein,
The narrow band filter that described the first filter amplification circuit is 40 ± 2kHz by frequency filtering and employing power are that among 60dB, 80dB, 100dB, the signal amplifier of one forms;
The broadband filter that described the second filter amplification circuit is 3-60MHz by frequency filtering and the two-stage signal amplifier that adopts power to be respectively 20dB and 40dB form.
5. detector as claimed in claim 1, is characterized in that, described thermal imagery collecting unit (3) is formed by on-site programmable gate array FPGA.
6. detector as claimed in claim 1, is characterized in that, described atlas analysis unit (4) is formed by Digital Signal Processing dsp chip.
7. detector as claimed in claim 1, is characterized in that, described analysis and Control and communication unit (5) comprise LCD MODULE, wireless communication module and the wire communication module for showing described thermal imagery spectrogram; Wherein,
Described wireless communication module comprises among the sub-communication module of GPRS, Zigbee communicator module, WIFI communicator module and Bluetooth communication submodule its one or more;
Described wire communication module comprises among 10/100BASE-T self adaptation Ethernet submodule, RS-485 interface sub-module, RS-232 interface submodule, optical fiber interface submodule its one or more.
8. the detector as described in any one in claim 1 to 7, it is characterized in that, described detector also comprises thermal imagery coded stack (6), described thermal imagery coded stack (6) is arranged between described thermal imagery collecting unit (3) and described atlas analysis unit (4), for storing described hybrid digital coding.
9. patrol and examine for controller switching equipment and a method with electro-detection, it is characterized in that, it is realized on detector described in any one comprising in claim 1 to 8, and described method comprises:
Gather ultrasonic signal that controller switching equipment produces, electric wave signal and infrared thermal imagery signal, and by the described ultrasonic signal collecting, electric wave signal and infrared thermal imagery signal convert respectively corresponding analog electrical signal to;
Multiple analog electrical signals after described conversion are carried out respectively to filter and amplification and denoising;
Synchronously obtain described multiple analog electrical signals after treatment, and by default acquisition parameter and Signal coding rule, the described multiple analog electrical signals that synchronously get are formed to hybrid digital coding;
The described hybrid digital of decoding is encoded, and forms visual partial discharge location thermal imagery spectrogram; And
Show described thermal imagery spectrogram, and described thermal imagery spectrogram is exported to external equipment.
10. method as claimed in claim 9, is characterized in that, described partial discharge location thermal imagery spectrogram comprises that the rejected region information, defect type information of described controller switching equipment, office put status information and insulation information.
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CN106249114A (en) * 2016-08-23 2016-12-21 上海华乘智能设备有限公司 Multifunctional belt electric detection means based on WIFI transmission and method
CN106405345A (en) * 2016-08-23 2017-02-15 上海局放软件技术有限公司 Hand-held multi-functional hot-line detection apparatus and integrated detection diagnosis method thereof
CN106501651A (en) * 2016-12-02 2017-03-15 深圳供电局有限公司 A kind of bus-structured multisensor distribution equipment detector
CN108303619A (en) * 2017-01-13 2018-07-20 广州佳和立创科技发展有限公司 A kind of controller switching equipment live detection method and device of Multi-sensor Fusion
CN107544004A (en) * 2017-06-28 2018-01-05 温州大学 A kind of detection means of building body interior insulation electric wire broken skin damage
CN107544004B (en) * 2017-06-28 2019-06-28 温州大学 A kind of detection device of building body interior insulation electric wire broken skin damage
CN110244204A (en) * 2019-06-27 2019-09-17 国网湖南省电力有限公司 A kind of switchgear method for diagnosing faults, system and the medium of multiple characteristic values

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