CN108957260A - Partial discharge detecting system and method, storage medium, processor - Google Patents

Partial discharge detecting system and method, storage medium, processor Download PDF

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Publication number
CN108957260A
CN108957260A CN201810751531.2A CN201810751531A CN108957260A CN 108957260 A CN108957260 A CN 108957260A CN 201810751531 A CN201810751531 A CN 201810751531A CN 108957260 A CN108957260 A CN 108957260A
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CN
China
Prior art keywords
sensor
status data
detection
partial discharge
unit
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Pending
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CN201810751531.2A
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Chinese (zh)
Inventor
刘弘景
黄山
苗旺
吴麟琳
周峰
任明
董明
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State Grid Corp of China SGCC
State Grid Beijing Electric Power Co
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State Grid Corp of China SGCC
State Grid Beijing Electric Power Co
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Application filed by State Grid Corp of China SGCC, State Grid Beijing Electric Power Co filed Critical State Grid Corp of China SGCC
Priority to CN201810751531.2A priority Critical patent/CN108957260A/en
Publication of CN108957260A publication Critical patent/CN108957260A/en
Pending legal-status Critical Current

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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
    • G01R31/1227Testing 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 of components, parts or materials

Abstract

The invention discloses a kind of partial discharge detecting system and method, storage medium, processors.Wherein, which includes: the status data for obtaining the measurement equipment to be checked using sensor unit acquisition, wherein sensor unit includes: wireless high-frequency current sensor, wireless ultrasound sensor, wireless ultrahigh-frequency sensor;Detect whether measurement equipment to be checked has partial discharge phenomenon according to status data.The present invention solves the technical issues of can not accurately detecting shelf depreciation.

Description

Partial discharge detecting system and method, storage medium, processor
Technical field
The present invention relates to Partial Discharge Detection fields, in particular to a kind of partial discharge detecting system and method, deposit Storage media, processor.
Background technique
Shelf depreciation (Partial Discharge) is the form of expression of Electric Power Equipment Insulation performance deterioration, and is insulation The reason of performance further deteriorates.Being monitored to local discharge signal is timely discovering device insulation defect, and prevention insulation is hit Wear the important means of failure.
In order to substation equipment implement comprehensively, effective monitoring, design a kind of ultrasound, hyperfrequency and high-frequency current part Discharge joint-detection device.More principle detection means of the device effective integration high frequency, hyperfrequency, ultrasonic wave, to each detection side The result that method obtains compares, to improve the reliability and accuracy of detection.
In substation's live detection business, since test object is more, sensor network can be constructed;Meanwhile it avoiding Sensor device monitoring data are excessive, and the artificial time-consuming and laborious situation of data that acquires occurs, and can pass through wireless relay unit reality The uplink and downlink for applying sensing data and order are realized the high-speed transfer of data command using WIFI, realize nearly network data It is defeated.
In recent years, with wireless communication and the rapid development of scale integrated technology and increasingly mature, so that sensor has both Sensing capability and communication capacity develop to the direction of micromation, intelligence, networking, and most typical representative is exactly wireless passes Sensor node (also referred to as sensor node).There is the sensor node of certain perception, calculating and communication capacity to be distributed in one for these A specific region collaboratively real-time monitoring, perception and handles data in network by way of self-organizing, passes through short distance The mode of wireless communication transfers data to aggregation node through multi-hop, so as to form collection information Perception, an information processing, letter Cease the network of transmission.
WiFi (adopting wireless fidelity technology) i.e. 802.11 agreement of IEEE is a kind of short range wireless transmission technology, can be hundreds of Internet is supported to connect the radio signal of people in feet.The industry such as data, image, voice and multimedia can be supported extensively Business.The wide coverage of WiFi radio wave, transmission speed are quickly, healthy and safe, its application is now very universal.
Currently it is more heavy, live to carry instrument all because the measurement means used are single for measurement partial discharge method in the industry Wiring and work to take power are cumbersome, so that live detection efficiency is lower, cause error of measured data larger, exist and fail to report or report by mistake The phenomenon that, any method is all difficult to cope with the case where there are insulation defects inside all devices, at the same time, at present in the industry The used sensor of the sensor used, analogue unit, number adopts unit and signal collection device is relatively independent, and scene is using more It is cumbersome, and it is difficult to synchronization gain ultrasound, hyperfrequency and pulsed current signal, storage, upload and the report of live detection data Generation mostly by being filled in manually and typing, the publication of patrol task and execute and lack processing management, a large amount of manpowers to collect Discharge data.It is inadequate for Partial Discharge Detection accuracy.
Aiming at the problem that accurately can not detect shelf depreciation, currently no effective solution has been proposed.
Summary of the invention
The embodiment of the invention provides a kind of partial discharge detecting system and method, storage medium, processors, at least to solve The technical issues of certainly can not accurately detecting shelf depreciation.
According to an aspect of an embodiment of the present invention, a kind of partial discharge detecting system is provided, comprising: sensor list Member, comprising: wireless high-frequency current sensor, wireless ultrasound sensor, wireless ultrahigh-frequency sensor, the sensor unit are used for Acquire the status data of measurement equipment to be checked;Wireless communication unit is connected with sensor unit, for status data to be sent to Detect terminal;Terminal is detected, is connected with wireless communication unit, for detecting whether measurement equipment to be checked has office according to status data Portion's electric discharge phenomena.
Further, above-mentioned wireless communication unit includes: WIFI module.
Further, above system further include: alarm unit is greater than pre- for the signal amplitude indicated by status data Determine threshold value to alarm.
Further, above system further include: signal processing unit, respectively with sensor unit and wireless communication unit It is connected, for being filtered, amplify to signal indicated by status data and detection processing, the status number that obtains that treated According to, and will treated status data unit is sent to detection terminal by wireless communication.
According to another aspect of an embodiment of the present invention, and a kind of detection method for local discharge is provided, comprising: obtain and utilize Sensor unit acquisition measurement equipment to be checked status data, wherein sensor unit include: wireless high-frequency current sensor, Wireless ultrasound sensor, wireless ultrahigh-frequency sensor;Detect whether measurement equipment to be checked has partial discharge phenomenon according to status data.
Further, the above method further include: in the status number for obtaining the measurement equipment to be checked using sensor unit acquisition According to before, Partial Discharge Detection task is received, wherein Partial Discharge Detection task, which is used to indicate, treats detection device progress part Discharge examination;Partial Discharge Detection instruction is generated, by Partial Discharge Detection instruction issuing to sensor unit, with indication sensor Unit acquisition state data.
Further, it obtains and includes using the status data of the measurement equipment to be checked of sensor unit acquisition: utilizing sensor Unit is filtered status data, amplifies and detection processing, the status data that obtains that treated;Treated the state of acquisition Data.
Further, the above method further include: detecting whether measurement equipment to be checked has shelf depreciation existing according to status data As later, generating examining report according to testing result, wherein testing result is used to indicate whether measurement equipment to be checked has shelf depreciation Phenomenon.
According to another aspect of an embodiment of the present invention, a kind of storage medium is additionally provided, the storage medium includes storage Program, wherein described program run when execute detection method for local discharge described in any of the above embodiments.
According to another aspect of an embodiment of the present invention, a kind of processor is additionally provided, the processor is used to run program, Wherein, detection method for local discharge described in any of the above embodiments is executed when described program is run.
In embodiments of the present invention, by the way of partial discharge detecting system, pass through sensor unit, comprising: wireless High Frequency Current Sensor, wireless ultrasound sensor, wireless ultrahigh-frequency sensor, the sensor unit is for acquiring to be detected set Standby status data;Wireless communication unit is connected with sensor unit, for status data to be sent to detection terminal;Inspection Terminal is surveyed, is connected with wireless communication unit, for detecting whether measurement equipment to be checked has partial discharge phenomenon according to status data, Achieve the purpose that detect shelf depreciation, to realize the technical effect for improving the accuracy of detection shelf depreciation, and then solve It has determined the technical issues of can not accurately detecting shelf depreciation.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of detection method for local discharge according to an embodiment of the present invention;
Fig. 2 is sensor module block diagram according to the preferred embodiment of the invention;
Fig. 3 is that detection device unit according to the preferred embodiment of the invention is constituted and application mode schematic diagram;
Fig. 4 is system implementations schematic diagram according to the preferred embodiment of the invention;
Fig. 5 is bandwidth-limited circuit schematic diagram according to the preferred embodiment of the invention;
Fig. 6 is signal amplification circuit schematic diagram according to the preferred embodiment of the invention;
Fig. 7 is detecting circuit schematic diagram according to the preferred embodiment of the invention;
Fig. 8 is workflow schematic diagram according to the preferred embodiment of the invention;
Fig. 9 is sensor and internal signal processing unit schematic diagram according to the preferred embodiment of the invention;
Figure 10 is joint-detection terminal interface schematic diagram according to the preferred embodiment of the invention;
Figure 11 is shelf depreciation joint detection results schematic diagram according to the preferred embodiment of the invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, " Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product Or other step or units that equipment is intrinsic.
According to embodiments of the present invention, a kind of partial discharge detecting system embodiment is provided, which includes: sensor list Member, comprising: wireless high-frequency current sensor, wireless ultrasound sensor, wireless ultrahigh-frequency sensor, the sensor unit are used for Acquire the status data of measurement equipment to be checked;Wireless communication unit is connected with sensor unit, for status data to be sent to Detect terminal;Terminal is detected, is connected with wireless communication unit, for detecting whether measurement equipment to be checked has office according to status data Portion's electric discharge phenomena.
By above-mentioned partial discharge detecting system, the technical effect for improving the accuracy of detection shelf depreciation may be implemented.
Optionally, above-mentioned wireless communication unit includes: WIFI module.
Optionally, above system further include: alarm unit is greater than predetermined for the signal amplitude indicated by status data Threshold value is alarmed.
Optionally, above system further include: signal processing unit, respectively with sensor unit and wireless communication unit phase Connection, for being filtered, amplify to signal indicated by status data and detection processing, the status number that obtains that treated According to, and will treated status data unit is sent to detection terminal by wireless communication.
According to embodiments of the present invention, a kind of detection method for local discharge embodiment is additionally provided.
Fig. 1 is the flow chart of detection method for local discharge according to an embodiment of the present invention, as shown in Figure 1, this method includes Following steps:
Step S102 obtains the status data of the measurement equipment to be checked using sensor unit acquisition, wherein sensor unit It include: wireless high-frequency current sensor, wireless ultrasound sensor, wireless ultrahigh-frequency sensor;
Step S104 detects whether measurement equipment to be checked has partial discharge phenomenon according to status data.
Through the above steps, the status data of the measurement equipment to be checked using sensor unit acquisition is obtained, wherein sensor Unit includes: wireless high-frequency current sensor, wireless ultrasound sensor, wireless ultrahigh-frequency sensor;It is detected according to status data Whether measurement equipment to be checked has partial discharge phenomenon, and the accuracy for improving Partial Discharge Detection may be implemented.
Optionally, the above method further include: in the status data for obtaining the measurement equipment to be checked using sensor unit acquisition Before, receive Partial Discharge Detection task, wherein Partial Discharge Detection task be used to indicate treat detection device carry out part put Electro-detection;Partial Discharge Detection instruction is generated, by Partial Discharge Detection instruction issuing to sensor unit, with indication sensor list First acquisition state data.
Further, it obtains and includes using the status data of the measurement equipment to be checked of sensor unit acquisition: utilizing sensor Unit is filtered status data, amplifies and detection processing, the status data that obtains that treated;Treated the state of acquisition Data.
Optionally, the above method further include: detecting whether measurement equipment to be checked has partial discharge phenomenon according to status data Later, examining report is generated according to testing result, wherein testing result is used to indicate whether measurement equipment to be checked has shelf depreciation existing As.
By above-mentioned detection method for local discharge, the accuracy of detection shelf depreciation can be improved.
The present invention also provides preferred embodiment below:
Embodiment 1
The preferred embodiment, firstly, the detection means using different principle has different sensitivity for different defects With detection validity, be conducive to message complementary sense by more principle joint-detections, prevent single means generate missing inspection and caused by accidentally Sentence;Secondly, comparing by the result of each detection method, the anti-interference accuracy differentiated with electric discharge of joint is promoted;Third is led to Distributed shelf depreciation wireless intelligence sensor and WIFI wireless network are crossed, is waken up by job-oriented terminal, and will test To shelf depreciation information be transferred to field monitoring terminal, without connecting independent signal processing unit and digital acquisition unit, have Effect reduces manpower and the time required for collection in worksite data.
Embodiment 2
As shown in Fig. 2, the wireless sensor (high frequency, ultrasound and hyperfrequency) that the device provided in the embodiment 2 uses It is broadly divided into four basic module compositions, including signal coupling module (namely debugging interface shown in Fig. 2), data acquisition module Block (namely partial discharge acquisition module shown in Fig. 2), power management module and wireless transport module are (namely shown in Fig. 2 Wireless module).
The embodiment 2 in order to monitoring device miniaturization, by device by sensor, signal conditioning unit, acquisition unit, letter Cease processing unit and wireless transmission unit integral packaging.The device unit constitutes and application method, as shown in figure 3, the device Including wireless high-frequency current sensor HFCT (1), wireless ultrasound sensor (2), wireless ultrahigh-frequency sensor (3), wireless data Transmission module (4), signal cable (5), WIFI module (6), detection terminal (7).
The realization of above-mentioned apparatus function is made of sensing layer, communication layers and diagnostic horizon three parts, as shown in figure 4, system is real Existing schematic diagram.Sensing layer is made of the sensor node, acquired by signal coupling, Signal Pretreatment unit, data, Threshold decision and unit early warning, receive the instruction of host computer (or terminal), are detected automatically to equipment state;Communication layers pass through Wireless transmission, receiving module connection sensing layer and diagnostic horizon;Diagnostic horizon is made of job-oriented terminal or server PC, main to complete: 1) receive job task, assign detection instruction to sensing unit;2) accident analysis is carried out to the abnormal data of upload;3) according to upper Communication breath and diagnostic result generate examining report;
The sensor signal in above-mentioned apparatus system is handled in the embodiment of the present invention 2 and power management is illustrated:
The invention unites to ultrasound, hyperfrequency and high-frequency current signal to realize low energy consumption, inexpensive distributed monitoring One carries out down conversion process, and frequency reducing size is determined by used acquisition unit rate and pulse resolution.Bandwidth-limited circuit shows It is intended to, as shown in figure 5, signal amplification circuit schematic diagram is as shown in Figure 6, detecting circuit schematic diagram is as shown in fig. 7, provide the implementation Hardware principle used by the filtering of sensor node, amplification and detecting circuit that example device uses.
Device in the embodiment 2 uses high capacity cell configuration mode, charge and discharge protecting and battery power management Technology.Apparatus of the present invention by selecting operating mode, interrupt service routine, communication module suspend mode design etc. sensors improve skill Art is improved, and is chosen the operating mode of lowest power consumption, is reduced working frequency, reduces the amount of communication data of node and terminal, Reduce the total power consumption of network.Workflow schematic diagram in the embodiment is as shown in Figure 8.
Step S802, sensor time opening, detection, storage shelf depreciation state instruction;
Step S804, using terminal sensor wake up on the spot, quick mobile phone sensor historic data, or open a wheel in real time Test;
Step S806 extracts shelf depreciation parameter, the data measured is saved into local data base;
Step S808 reaches neighbouring detection terminal by WIFI;
Step S810 is analyzed, is diagnosed in terminal device.
Above-described embodiment, at the scene using as follows:
Based on ultrasound of the invention, hyperfrequency and high-frequency current shelf depreciation joint-detection apparatus for work, to certain 220kVGIS switchgear carries out shelf depreciation and simulates live detection operation.Its work flow is as follows:
1) terminal receives local discharge band electro-detection job task;
2) professional patrol officer's carried terminal equipment is gone near certain 220kVGIS;
3) ultrasound, hyperfrequency and the high-frequency impulse distributed sensor of the different location in GIS device are waken up by terminal;
4) Partial Discharge Detection sign on and detection are assigned often;
5) ultrasound, hyperfrequency and high-frequency impulse sensor detection data are uploaded to terminal automatically;
6) terminal completes Detection task and forms examining report;
7) shelf depreciation joint-detection job task is completed.
As shown in figure 9, sensor used by aforesaid operations and internal signal processing unit include;(a) ultrasonic sensing list Member, (b) hyperfrequency sensing unit, (c) high-frequency current sensing unit, (d) signal processing unit.(a), (b) joint-detection terminal Interface is as shown in Figure 10.Gained shelf depreciation joint detection results are as shown in figure 11, may include: (a) high-frequency current detection knot Fruit, (b) ultrasonic testing results, (c) ultra-high-frequency detection result.
It 2 could be aware that through the foregoing embodiment:
1, in ultrasound, hyperfrequency and high-frequency current shelf depreciation joint-detection apparatus for work, sensor unit low-power consumption is hard Part unit is constituted;
2, the implementation of the distributed shelf depreciation combined detection system based on sensing layer, communication layers and diagnostic horizon.
To achieve the goals above, according to another aspect of the present invention, the embodiment of the invention also provides a kind of storage Jie Matter, the storage medium include the program of storage, wherein equipment where controlling the storage medium in described program operation is held Row detection method for local discharge described above.
To achieve the goals above, according to another aspect of the present invention, the embodiment of the invention also provides a kind of processor, The processor is for running program, wherein described program executes detection method for local discharge described above when running.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
In the above embodiment of the invention, it all emphasizes particularly on different fields to the description of each embodiment, does not have in some embodiment The part of detailed description, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, Ke Yiwei A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of unit or module It connects, can be electrical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple On unit.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words It embodies, which is stored in a storage medium, including some instructions are used so that a computer Equipment (can for personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or Part steps.And storage medium above-mentioned includes: that USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic or disk etc. be various to can store program code Medium.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims (10)

1. a kind of partial discharge detecting system characterized by comprising
Sensor unit, comprising: wireless high-frequency current sensor, wireless ultrasound sensor, wireless ultrahigh-frequency sensor, the biography Sensor cell is used to acquire the status data of measurement equipment to be checked;
Wireless communication unit is connected with the sensor unit, for the status data to be sent to detection terminal;
The detection terminal, is connected with the wireless communication unit, described to be detected for being detected according to the status data Whether equipment has partial discharge phenomenon.
2. system according to claim 1, which is characterized in that the wireless communication unit includes: WIFI module.
3. system according to claim 1, which is characterized in that the system also includes:
Alarm unit is greater than predetermined threshold for the signal amplitude indicated by the status data and alarms.
4. system according to claim 1, which is characterized in that the system also includes:
Signal processing unit is connected with the sensor unit and the wireless communication unit respectively, for the shape Signal indicated by state data is filtered, amplifies and detection processing, the status data that obtains that treated, and by the processing Status data afterwards is sent to the detection terminal by the wireless communication unit.
5. a kind of detection method for local discharge characterized by comprising
Obtain the status data of the measurement equipment to be checked using sensor unit acquisition, wherein the sensor unit includes: wireless High Frequency Current Sensor, wireless ultrasound sensor, wireless ultrahigh-frequency sensor;
Detect whether the measurement equipment to be checked has partial discharge phenomenon according to the status data.
6. according to the method described in claim 5, it is characterized in that, utilizing the to be detected of sensor unit acquisition in described obtain Before the status data of equipment, the method also includes:
Receive Partial Discharge Detection task, wherein the Partial Discharge Detection task be used to indicate to the measurement equipment to be checked into Row Partial Discharge Detection;
Partial Discharge Detection instruction is generated, by the Partial Discharge Detection instruction issuing to the sensor unit, to indicate It states sensor unit and acquires the status data.
7. according to the method described in claim 5, it is characterized in that, described obtain to be detected is set using what sensor unit acquired Standby status data includes:
The status data is filtered using the sensor unit, is amplified and detection processing, the shape that obtains that treated State data;
Obtain treated the status data.
8. according to the method described in claim 5, it is characterized in that, described described to be detected according to status data detection After whether equipment has partial discharge phenomenon, the method also includes:
Examining report is generated according to testing result, wherein the testing result is used to indicate whether the measurement equipment to be checked has office Portion's electric discharge phenomena.
9. a kind of storage medium, which is characterized in that the storage medium includes the program of storage, wherein run in described program When control the storage medium where equipment perform claim require any one of 5 to 8 described in method.
10. a kind of processor, which is characterized in that the processor is for running program, wherein right of execution when described program is run Benefit require any one of 5 to 8 described in method.
CN201810751531.2A 2018-07-10 2018-07-10 Partial discharge detecting system and method, storage medium, processor Pending CN108957260A (en)

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CN109596955A (en) * 2018-12-30 2019-04-09 国网北京市电力公司 Shelf depreciation state determines method and device

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