CN102288882A - Partial discharge monitoring system and method for multichannel electrical equipment - Google Patents
Partial discharge monitoring system and method for multichannel electrical equipment Download PDFInfo
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- CN102288882A CN102288882A CN2011102343816A CN201110234381A CN102288882A CN 102288882 A CN102288882 A CN 102288882A CN 2011102343816 A CN2011102343816 A CN 2011102343816A CN 201110234381 A CN201110234381 A CN 201110234381A CN 102288882 A CN102288882 A CN 102288882A
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Abstract
The invention provides a partial discharge monitoring system for multichannel electrical equipment. The system provided by the invention comprises multiple partial discharge signal acquisition sensors, a signal modulation module, a multichannel industrial personal computer acquisition module and a monitoring processing center, wherein the monitoring system collects various characteristic parameters of partial discharge signals of the electrical equipment through the sensors and processes analog signals through the signal modulation module; and the multichannel industrial personal computer acquisition module synchronously obtains the processed signals, and the monitoring processing center carries out analysis processing in real time. The system provided by the invention adopts various sensors and multiple channels to synchronously collect the partial discharge signals in real time, can be used for overcoming the detects such as the traditional single signal detection for partial discharge, separated detection and analysis and the like, carries out the analysis processing of different information parameter characteristics on the same signal source for partial discharge, achieves the accurate and effective judgment for partial discharge, carries out the positioning of a partial discharge source by means of the characteristic for synchronously collecting the signals in real time through the multiple channels and is beneficial to the maintenance, examination and repair of the electrical equipment.
Description
Technical field
The present invention relates to a kind of hyperchannel local discharge of electrical equipment monitoring system, also relate to a kind of hyperchannel local discharge of electrical equipment monitoring method simultaneously.
Background technology
Have a large amount of insulators in power equipment, and these insulators can exist and have only regional area to discharge, and not run through between the conductor that applies voltage because of problems such as long-term withstand voltage or manufacturing process, this phenomenon is referred to as shelf depreciation.Analysis of Partial Discharge comprises the analysis to the propagation of material, electric field, spark character, pulse waveform and decay, sensor spatial sensitivity, frequency response, demarcation, noise and data interpretation etc.
The partial discharge phenomenon of high voltage electric equipment insulation is periodically, changes to go round and begin again with alternating voltage and carries out, and produces discharge when alternating voltage reaches discharge inception voltage.The energy of forms such as light, sound wave can be supervened in insulating part inside when shelf depreciation.The quantity of local discharge signal, amplitude and polarity can directly reflect the situation of insulation system.The test of high voltage electric equipment shelf depreciation is the effective means of assessment insulation quality.In recent years, along with the development and the application of sensor, computing machine, optical fiber technology etc., the measurement of shelf depreciation has realized digitizing, and the order of accuarcy of measurement improves constantly, and has realized on-line monitoring.At present, the measuring method of shelf depreciation generally is divided into electrical measuring method and non-electrical measuring method.Electrical measuring method is to use the measuring method of high-frequency pulse current, is widely adopted because of it is highly sensitive and easy to use.Non-electrical measuring method mainly is supercritical ultrasonics technology and studies more thermally high-frequency method at present, but supercritical ultrasonics technology real-time analysis discharge signal, also can finally position detection, and have the influence that to avoid electromagnetic interference (EMI), therefore can be used for the serious occasion of electromagnetic interference (EMI) local discharge part position; Carry out monitoring analysis and produce the high-frequency electromagnetic signal during the sharp shelf depreciation of high frequency rule.
Aspect analytical approach and analytical equipment, mostly domestic and international most monitoring system is the single type signal analysis, all exists and can't finish the synchronous comparative analysis of multiple local discharge signal in single monitoring system.
Summary of the invention
In view of this, one of purpose of the present invention provides a kind of hyperchannel local discharge of electrical equipment monitoring system, local discharge of electrical equipment is carried out polytype signal, hyperchannel, monitoring and comparative analysis in real time synchronously, further, based on acooustic combination or audio frequency associating or electroacoustic frequency integrated processes, the location of realizing shelf depreciation; Two of purpose of the present invention provides a kind of hyperchannel local discharge of electrical equipment monitoring method.
One of purpose of the present invention is achieved through the following technical solutions:
This hyperchannel local discharge of electrical equipment monitoring system comprises
A plurality of local discharge signal pick-up transducers comprise current sensor, sonac and uhf sensor, are used to gather the various physical phenomenon state parameters of local discharge of electrical equipment;
The signal condition module is used for the signal that the local discharge signal pick-up transducers is gathered is handled, and the signal data after will handling is sent to hyperchannel industrial computer acquisition module;
Hyperchannel industrial computer acquisition module, be used for the synchronous acquisition of hyperchannel local discharge signal and with signal forwarding to monitoring processing enter;
The monitoring processing enter is used for the processing of hyperchannel local discharge signal Synchronization Analysis and relatively, the report of formation comprehensive monitoring to the signal that same local discharge signal source produces, is united realization shelf depreciation source location frequently by acooustic combination, audio frequency or electroacoustic
Further, described signal condition module is carried out digital signal processing to the partial discharge phenomenon state parameter of being gathered, and comprises conversion of signals, filtering, processing and amplifying;
Further, hyperchannel industrial computer acquisition module adopts the synchronous data collection card of hyperchannel, high sampling rate;
Further, described monitoring processing enter is carried out hyperchannel real-time analysis, processing, result's demonstration to the The data virtual instrument technique from capture card to it, and monitors in real time and logout;
Further, described monitoring processing enter comprises
The human-computer interaction interface primary module,
Parameter is provided with module, is used for various shelf depreciation physical signalling amounts are comprised the parameter setting of alarm parameters;
Data acquisition module is used for the data acquisition to each path partially discharge physics signal, adopts based on multi-channel data acquisition agreement and clock synchronization setting;
In real time monitoring modular according to the analysis result of data analysis processing module, realizes showing whether the shelf depreciation state parameter is normal, selects simultaneously to unite frequently based on acooustic combination or audio frequency associating or electroacoustic and realizes the local discharge signal source location;
The data analysis processing module, be used for to various shelf depreciation physical signallings comprise digital filtering, spectrum analysis, with set the various data analyses that alarming value compares and handle operation;
The logout module is used for inquiry at any time and demonstration to each status signal parameter alert event;
Database management module is used for the data and the event data of analyzing and processing are stored, inquired about.
Two of purpose of the present invention is achieved through the following technical solutions:
This hyperchannel local discharge of electrical equipment monitoring method may further comprise the steps:
1) adopts the local discharge signal pick-up transducers that comprises current sensor, sonac and uhf sensor, gather the various physical phenomenon state parameters of local discharge of electrical equipment;
2) signal that the local discharge signal pick-up transducers is gathered is handled, and the signal data after will handling is sent to hyperchannel industrial computer acquisition module;
3) hyperchannel industrial computer acquisition module is sent to the monitoring processing enter with the shelf depreciation state parameter of synchronous acquisition;
4) the monitoring processing enter is carried out analyzing and processing and comparison to the hyperchannel shelf depreciation state parameter of synchronous acquisition, forms the comprehensive monitoring report.
Further, in step 2) in, the partial discharge phenomenon state parameter is carried out digital signal processing, comprise conversion of signals, filtering, processing and amplifying;
Further, in step 3),, unite realization shelf depreciation source location frequently by acooustic combination, audio frequency or electroacoustic to the signal that same local discharge signal source produces;
Further, in step 4), the monitoring processing enter is carried out hyperchannel real-time analysis, processing, result's demonstration to the The data virtual instrument technique from capture card to it, and monitors in real time and logout.
The invention has the beneficial effects as follows:
Patent combined sensor technology of the present invention, computer technology and monitoring technology, can monitor the method that provides new to local discharge of electrical equipment, solved the approach of traditional shelf depreciation with single electrical signal detection, realized the multiple physical signalling amount of shelf depreciation synchronous monitoring, and can realize the local discharge signal source location, thereby can reduce maintenance and maintenance cost effectively by uniting frequently based on the associating of acooustic combination or audio frequency or electroacoustic.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can obtain instruction from the practice of the present invention to investigating hereinafter.Target of the present invention and other advantages can realize and obtain by following instructions and claims.
Description of drawings
In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing, wherein:
Fig. 1 is a system architecture synoptic diagram of the present invention;
Fig. 2 forms synoptic diagram for the module of monitoring processing enter.
Embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.Should be appreciated that preferred embodiment only for the present invention is described, rather than in order to limit protection scope of the present invention.
Existing traditional partial discharge monitoring all is the single input that adopts basically, and hyperchannel local discharge of electrical equipment monitoring method of the present invention may further comprise the steps:
1) adopts the local discharge signal pick-up transducers that comprises current sensor, sonac and uhf sensor, gather the various physical phenomenon state parameters of local discharge of electrical equipment;
2) signal that the local discharge signal pick-up transducers is gathered is handled, and the signal data after will handling is sent to hyperchannel industrial computer acquisition module;
3) hyperchannel industrial computer acquisition module is sent to the monitoring processing enter with the shelf depreciation state parameter of synchronous acquisition;
4) the monitoring processing enter is carried out analyzing and processing and comparison to the hyperchannel shelf depreciation state parameter of synchronous acquisition, forms the comprehensive monitoring report.
In step 2) in, the partial discharge phenomenon state parameter is carried out digital signal processing, comprise conversion of signals, filtering, processing and amplifying.
In step 3),, unite realization shelf depreciation source location frequently by acooustic combination, audio frequency or electroacoustic to the signal that same local discharge signal source produces.
In step 4), the monitoring processing enter is carried out hyperchannel real-time analysis, processing, result's demonstration to the The data virtual instrument technique from capture card to it, and monitors in real time and logout.
Based on the design philosophy of said method, as shown in Figure 1, 2, hyperchannel partial discharge monitoring of the present invention system comprises
(1) a plurality of local discharge signal pick-up transducers: current sensor, sonac and uhf sensor are wherein arranged, be used to gather the various physical phenomenon state parameters of local discharge of electrical equipment;
(2) signal condition module: be used for the signal that the local discharge signal pick-up transducers is gathered is handled, and the signal data after will handling is sent to hyperchannel industrial computer acquisition module; The partial discharge phenomenon state parameter of being gathered is carried out digital signal processing, comprise conversion of signals, filtering, processing and amplifying.
(3) hyperchannel industrial computer acquisition module: be used for the synchronous acquisition of hyperchannel local discharge signal and with signal forwarding to monitoring processing enter; Among the present invention, hyperchannel industrial computer acquisition module adopts the synchronous data collection card of hyperchannel, high sampling rate;
(4) monitoring processing enter: be used for hyperchannel local discharge signal Synchronization Analysis is handled and comparison, the report of formation comprehensive monitoring, to the signal that same local discharge signal source produces, unite realization shelf depreciation source location frequently by acooustic combination, audio frequency or electroacoustic.
Among the present invention, the monitoring processing enter is carried out hyperchannel real-time analysis, processing, result's demonstration to the The data virtual instrument technique from capture card to it, and monitors in real time and logout.
Particularly, the monitoring processing enter comprises that human-computer interaction interface primary module, parameter are provided with module, data acquisition module, real-time monitoring modular, data analysis processing module, database management module and logout module etc.The effect of each module is as follows:
Parameter is provided with the parameter setting that module is used for various shelf depreciation physical signalling amounts are comprised alarm parameters;
Data acquisition module is used for the data acquisition to each path partially discharge physics signal, adopts based on multi-channel data acquisition agreement and clock synchronization setting;
In real time monitoring modular is used for the analysis result according to the data analysis processing module, realizes showing whether the shelf depreciation state parameter is normal, selects simultaneously to unite frequently based on acooustic combination or audio frequency associating or electroacoustic and realizes the local discharge signal source location;
The data analysis processing module be used for to various shelf depreciation physical signallings comprise digital filtering, spectrum analysis, with set the various data analyses that alarming value compares and handle operation;
The logout module is used for inquiry at any time and the demonstration to each status signal parameter alert event;
Database management module is used for the data of analyzing and processing and event data are stored, inquired about;
Described human-computer interaction interface primary module is used to connect above-mentioned each module, realizes man-machine interaction.
System of the present invention adopts the real-time synchronous acquisition local discharge signal of multiple sensors hyperchannel, broken the single input of traditional shelf depreciation, and detect and shortcoming such as separate, can carry out different information parameter signature analysises to the same signal source of shelf depreciation handles, reach and judge shelf depreciation more accurately and efficiently, more can carry out the shelf depreciation source location, help maintenance of electric device and maintenance by means of the real-time acquired signal characteristics of its multi-channel synchronous.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (9)
1. hyperchannel local discharge of electrical equipment monitoring system is characterized in that: comprise
A plurality of local discharge signal pick-up transducers comprise current sensor, sonac and uhf sensor, are used to gather the various physical phenomenon state parameters of local discharge of electrical equipment;
The signal condition module is used for the signal that the local discharge signal pick-up transducers is gathered is handled, and the signal data after will handling is sent to hyperchannel industrial computer acquisition module;
Hyperchannel industrial computer acquisition module, be used for the synchronous acquisition of hyperchannel local discharge signal and with signal forwarding to monitoring processing enter;
The monitoring processing enter is used for the processing of hyperchannel local discharge signal Synchronization Analysis and relatively, the report of formation comprehensive monitoring to the signal that same local discharge signal source produces, is united realization shelf depreciation source location frequently by acooustic combination, audio frequency or electroacoustic.
2. hyperchannel local discharge of electrical equipment monitoring system according to claim 1 is characterized in that: described signal condition module comprises conversion of signals, filtering, processing and amplifying to the signal Processing that the partial discharge phenomenon state parameter of being gathered carries out.
3. hyperchannel local discharge of electrical equipment monitoring system according to claim 1 is characterized in that: hyperchannel industrial computer acquisition module adopts the synchronous data collection card of hyperchannel, high sampling rate.
4. hyperchannel local discharge of electrical equipment monitoring system according to claim 3, it is characterized in that: described monitoring processing enter is carried out hyperchannel real-time analysis, processing, result's demonstration to the The data virtual instrument technique from capture card to it, and monitors in real time and logout.
5. hyperchannel local discharge of electrical equipment monitoring system according to claim 4 is characterized in that: described monitoring processing enter comprises
The human-computer interaction interface primary module,
Parameter is provided with module, is used for various shelf depreciation physical signalling amounts are comprised the parameter setting of alarm parameters;
Data acquisition module is used for the data acquisition to each path partially discharge physics signal, adopts based on multi-channel data acquisition agreement and clock synchronization setting;
In real time monitoring modular according to the analysis result of data analysis processing module, realizes showing whether the shelf depreciation state parameter is normal, selects simultaneously to unite frequently based on acooustic combination or audio frequency associating or electroacoustic and realizes the local discharge signal source location;
The data analysis processing module, be used for to various shelf depreciation physical signallings comprise digital filtering, spectrum analysis, with set the various data analyses that alarming value compares and handle operation;
The logout module is used for inquiry at any time and demonstration to each status signal parameter alert event;
Database management module is used for the data and the event data of analyzing and processing are stored, inquired about.
6. hyperchannel local discharge of electrical equipment monitoring method is characterized in that: said method comprising the steps of:
1) adopts the local discharge signal pick-up transducers that comprises current sensor, sonac and uhf sensor, gather the various physical phenomenon state parameters of local discharge of electrical equipment;
2) signal that the local discharge signal pick-up transducers is gathered is handled, and the signal data after will handling is sent to hyperchannel industrial computer acquisition module;
3) hyperchannel industrial computer acquisition module is sent to the monitoring processing enter with the shelf depreciation state parameter of synchronous acquisition;
4) the monitoring processing enter is carried out analyzing and processing and comparison to the hyperchannel shelf depreciation state parameter of synchronous acquisition, forms the comprehensive monitoring report.
7. hyperchannel local discharge of electrical equipment monitoring method according to claim 6 is characterized in that: in step 2) in, the partial discharge phenomenon state parameter is carried out digital signal processing, comprise conversion of signals, filtering, processing and amplifying.
8. hyperchannel local discharge of electrical equipment monitoring method according to claim 7 is characterized in that: in step 3), to the signal that same local discharge signal source produces, unite realization shelf depreciation source location frequently by acooustic combination, audio frequency or electroacoustic.
9. hyperchannel local discharge of electrical equipment monitoring system according to claim 8, it is characterized in that: in step 4), the monitoring processing enter is carried out hyperchannel real-time analysis, processing, result's demonstration to the The data virtual instrument technique from capture card to it, and monitors in real time and logout.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103487734A (en) * | 2013-09-24 | 2014-01-01 | 江苏新亚高电压测试设备有限公司 | Full-digitalization multi-channel real-time synchronous partial discharge detector |
| CN104198904A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Insulation tube type bus partial discharge detecting device |
| CN104865511A (en) * | 2015-06-23 | 2015-08-26 | 国家电网公司 | Partial discharge detection device |
| CN105891685A (en) * | 2016-03-31 | 2016-08-24 | 国网天津市电力公司 | All-weather ultrasonic state monitoring device for substation equipment |
| CN107942205A (en) * | 2017-09-20 | 2018-04-20 | 国网辽宁省电力有限公司检修分公司 | A kind of independent multichannel Analysis of Partial Discharge platform |
| CN108169620A (en) * | 2017-11-30 | 2018-06-15 | 国网北京市电力公司 | Fault location system, method and apparatus based on time synchronization |
| CN108226732A (en) * | 2018-04-09 | 2018-06-29 | 莆田学院 | A kind of insulating material structure overpressure resistance detecting device and method |
| CN111999620A (en) * | 2020-09-22 | 2020-11-27 | 珠海华网科技有限责任公司 | Multi-channel joint positioning method for partial discharge of power equipment |
| CN113485210A (en) * | 2021-08-23 | 2021-10-08 | 中国工程物理研究院流体物理研究所 | Automatic integrated self-checking system and method for large-scale electric signal sensing system |
| CN113567814A (en) * | 2021-06-21 | 2021-10-29 | 国网天津市电力公司电力科学研究院 | Multi-channel synchronous acquisition system for discharge detection |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487734A (en) * | 2013-09-24 | 2014-01-01 | 江苏新亚高电压测试设备有限公司 | Full-digitalization multi-channel real-time synchronous partial discharge detector |
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| CN104198904A (en) * | 2014-09-19 | 2014-12-10 | 国家电网公司 | Insulation tube type bus partial discharge detecting device |
| CN104865511A (en) * | 2015-06-23 | 2015-08-26 | 国家电网公司 | Partial discharge detection device |
| CN105891685A (en) * | 2016-03-31 | 2016-08-24 | 国网天津市电力公司 | All-weather ultrasonic state monitoring device for substation equipment |
| CN107942205A (en) * | 2017-09-20 | 2018-04-20 | 国网辽宁省电力有限公司检修分公司 | A kind of independent multichannel Analysis of Partial Discharge platform |
| CN108169620A (en) * | 2017-11-30 | 2018-06-15 | 国网北京市电力公司 | Fault location system, method and apparatus based on time synchronization |
| CN108226732A (en) * | 2018-04-09 | 2018-06-29 | 莆田学院 | A kind of insulating material structure overpressure resistance detecting device and method |
| CN108226732B (en) * | 2018-04-09 | 2024-04-09 | 莆田学院 | Insulation material structure pressure-resistant detection device and method |
| CN111999620A (en) * | 2020-09-22 | 2020-11-27 | 珠海华网科技有限责任公司 | Multi-channel joint positioning method for partial discharge of power equipment |
| CN113567814A (en) * | 2021-06-21 | 2021-10-29 | 国网天津市电力公司电力科学研究院 | Multi-channel synchronous acquisition system for discharge detection |
| CN113485210A (en) * | 2021-08-23 | 2021-10-08 | 中国工程物理研究院流体物理研究所 | Automatic integrated self-checking system and method for large-scale electric signal sensing system |
| CN113485210B (en) * | 2021-08-23 | 2022-06-17 | 中国工程物理研究院流体物理研究所 | Automatic integrated self-checking system and method for large-scale electric signal sensing system |
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Application publication date: 20111221 |