CN104049185A - Portable partial discharge detecting system and method - Google Patents
Portable partial discharge detecting system and method Download PDFInfo
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- CN104049185A CN104049185A CN201410219147.XA CN201410219147A CN104049185A CN 104049185 A CN104049185 A CN 104049185A CN 201410219147 A CN201410219147 A CN 201410219147A CN 104049185 A CN104049185 A CN 104049185A
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Abstract
The invention relates to the field of detecting and monitoring, in particular to a portable partial discharge detecting system and method. The portable partial discharge detecting system comprises a UHF signal detecting unit, a signal converting unit, a signal preprocessing unit, a data collecting unit and an IED system unit. The UHF signal detecting unit is installed at the position of an insulator of GIS equipment and used for monitoring the internal insulation state of the GIS equipment, the signal preprocessing unit is used for filtering signals through an FHSS technology, amplifying and conditioning the signals and then sending the signals to the data collecting unit, the data collecting unit is used for collecting the signals and sending the signals to the IED system unit through a wireless network to carry out synthetic judgment, the insulation state of the GIS equipment is evaluated and early warned, and meanwhile real-time monitoring on data is achieved by installing APP application software through a mobile device. A device which is reasonable in structure, complete in function and capable of simplifying field operation and meeting field operation habits and is used for detecting the insulation state of the GIS equipment is provided.
Description
Technical field
The present invention relates to detect monitoring field, refer to especially a kind of Portable PD On-Line detection system and method.
Background technology
Gas-insulated provision for sealing GIS is that transmission of electricity and power transformation field have extensively and the power equipment of important application.Because whole elements of GIS are all enclosed in betal can, its initial failure is compared with the more difficult discovery of conventional substation, and the loss that fault causes is also larger.In order to understand exactly GIS running status, find in time and eliminate potential faults, it is necessary that high pressure GIS is detected.It is the basis of realizing GIS repair based on condition of component that GIS is detected, and can reduce the loss causing because of periodic maintenance and the automatization level that improves transformer station.
Partial Discharge Detecting Technology is to find that high-tension apparatus potential insulation defect is the sensitiveest, a UHF online measuring technique most effectively, be that in local detection method, application has successful one most, be widely used in office's discharge examination of the high voltage electric equipments such as power transformer, GIS, power cable.
Describe as an example of GIS example, superfrequency method, measurement bandwidth, between 300MHz-1500MHz, has the features such as antijamming capability is strong, sensitivity is high, and this not contact for secondary device and
Testing staff is safer, and system architecture is simple.A large amount of GIS inherent vice cases have been found by the online detection of superfrequency and live testing in all parts of the country in recent years, become the most important detection means of the online detection field of current GIS.
Frequency hopping (Frequency-Hopping Spread Spectrum; FHSS)
At the beginning of the 90's, there is the frequency hopping pattern generator based on fuzzy (Fuzzy) rule.In this system, jointly decided the output sequence of system by fuzzy rule, starting condition and sampling pattern.As long as listener-in does not know fuzzy rule, starting condition, sampling pattern three any one, with regard to the unpredictable output frequency to system, just improve thus anti-eavesdropping capability and the antijamming capability of system.The frequency hopping code sequence that fuzzy frequency hopping provides is more even compared with traditional frequency hopping code sequence, also more difficult prediction.
There is the end of the nineties people to propose chaos (chaotic) frequency hop sequences.Its basic thought is to generate frequency hop sequences by the symbol sebolic addressing of chaos system.In this chaos system, to determine nonlinear mapping relations, starting condition and chaos rule, the unique definite output sequence of three.Definite Chaotic FH Sequence has embodied good homogeneity thus, low probability of intercept, good Hamming correlation property and have the desirable range of linearity.
In existing DS/CDMA system, near-far interference is a very large problem.Because high-power signal only produces near-far interference in certain frequency, unaffected in the time that carrier frequency jumps to another frequency, therefore frequency-hopping system does not have obvious near-far interference, and this makes it in mobile communication, be easy to be applied and develop.In digital cellular mobile communication systems, if adopt mutually orthogonal frequency hopping pattern synchronising frequency hopping between link, or the asynchronous frequency hopping of the frequency hopping pattern that adopts low simple crosscorrelation, can make the interference between link eliminate completely or substantially eliminate, significant to the capacity of raising system.In addition, frequency hopping is instantaneous narrowband systems, and its frequency is distributed and had very large dirigibility, and under the very crowded condition of existing frequency resource, this point is significant.
The multiple access performance of frequency hopping has very important significance for networking.Laval university of Canada has proposed to apply fast frequency hopping technology in fiber optic network.This system utilizes Bragg grating to substitute the frequency synthesizer in traditional frequency-hopping system, and hop rate reaches the 10G order of magnitude.System is 30 users, and under the condition that bit error rate is 10-9, data rate is 500Mb/s.Compared with adopting the fiber optic network of incoherent DS/CDMA technology, while having the user of equal number to use, the bit error rate of FFH/CDMA system is obviously better than DS/CDMA system simultaneously.
The local discharge detection device using at present, detection speed is slow, take that human resources are large, on-the-spot test professional, complicacy is high, line is complicated, signal attenuation is large, interference is strong, site work personal security coefficient is low, cannot regulate the frequency range of frequency range amplifilter, have certain difficulty so carry out voluntarily Site Detection for operation department.
Following patent describes
1. application publication number (CN103605061) adopts antenna to coordinate with alignment sensor by signal processing unit processes finally by LCD display screen demonstration discharge signal.Its shortcoming is that system can not carry out signal analysis and and the many decay of early warning processing, signal converting are large, detection speed is slow to discharge signal.
2. application publication number (CN102628916A) system comprises superfrequency receiving antenna, superfrequency receiving antenna is connected with bandpass filter by concentric cable, bandpass filter is connected with amplifier, amplifier connects digital oscilloscope, digital oscilloscope is connected with industrial computer, in industrial computer, be provided with monitoring system processing module, for detection of, show in real time, calculate partial discharge position and save historical data.Shortcoming is: connecting line and joint are too much, signal attenuation is large, uses oscillograph cost higher, and uses inconvenient.
Summary of the invention
The object of the present invention is to provide a kind of Portable PD On-Line detection system and method, by GIS equipment is carried out to Partial Discharge Detection, find in advance the insulation defect of GIS inside, avoid the generation of the major accident causing because of insulation degradation.
The invention provides a kind of Portable PD On-Line detection system, comprise the UHF detecting signal unit for detection of the insulation defect of GIS inside, amplify for the signal that UHF detecting signal unit is detected, the signal conversion unit of filtering and Signal Pretreatment unit, for the data acquisition unit gathering processing rear signal, for data being carried out to the IED system unit of comprehensive judgement, the signal that UHF detecting signal unit detects amplifies signal by signal conversion unit, filtering, and signal after treatment is sent to Signal Pretreatment unit, Signal Pretreatment unit carries out data analysis arrangement to signal after treatment and sends data acquisition unit to, after signal being gathered by data acquisition unit, comprehensively judge to IED system unit, insulation status to GIS equipment is made assessment, early warning, data are monitored in real time simultaneously.
Described signal conversion unit is by amplifier, and bounce frequency filter and radio receiving transmitting module one form, and described Signal Pretreatment unit is made up of radio receiving transmitting module two and microprocessor one, described data acquisition unit is made up of high speed data acquisition system and microprocessor two, the signal that UHF detecting signal unit detects passes to signal conversion unit, signal conversion unit amplifies the signal obtaining through amplifier, pass to the radio receiving transmitting module two in Signal Pretreatment unit by after bounce frequency filter filtering by radio receiving transmitting module one again, radio receiving transmitting module two passes to microprocessor one the signal receiving and carries out data analysis arrangement, microprocessor one sends the high speed data acquisition system in data acquisition unit to the signal after analysis and arrangement, high speed data acquisition system sends microprocessor two to after gathering to the received signal carries out signal and gathers.
Described UHF detecting signal unit detects by superfrequency detection mode; Described Signal Pretreatment unit carries out segmentation filtering by FHSS technology and realizes signals collecting.
After signal being gathered by data acquisition unit, sending IED system unit to by wireless network comprehensively judges.
Described wireless network is any one in bluetooth, Wifi, frequency hopping communication three.
Described Signal Pretreatment unit and data acquisition unit are fixed in same housing.
When described IED system unit detects the data that data acquisition unit gathered, gathers and definite signal reaches the threshold value of setting, export early warning signal, described early warning signal carries out early warning by sound, light, the output of active relay, passive relay output, wireless network, mobile network and computer applied algorithm.
Described UHF detecting signal unit is connected by coaxial cable with signal conversion unit, signal conversion unit is connected by wireless receiving and dispatching mode with Signal Pretreatment unit, between Signal Pretreatment unit and data acquisition unit, be electrically connected, Signal Pretreatment unit, data acquisition unit are connected by wireless receiving and dispatching mode with IED system unit.
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, will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of signal conversion unit, Signal Pretreatment unit and data acquisition unit.
In figure,
1, UHF detecting signal unit;
2,signal conversion unit;
3,signal Pretreatment unit;
4,data acquisition unit;
5,iED system unit.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the apparatus insulated condition detection apparatus of GIS is by UHF detecting signal unit 1, signal conversion unit 2, Signal Pretreatment unit 3, data acquisition unit 4, IED system unit 5 five part compositions, UHF detecting signal unit 1 is installed on the apparatus insulated son of GIS place, the signal that UHF detecting signal unit 1 detects sends Signal Pretreatment unit 3 to after processing by signal conversion unit 2, Signal Pretreatment unit 3 carries out filtering to signal, amplify, gather, after signal being gathered by data acquisition unit 4 to IED(intelligent electronic device) system unit 5 comprehensively judges, insulation status to GIS equipment is made assessment, early warning, data are monitored in real time simultaneously.
Described UHF detecting signal unit 1 is to adopt superfrequency detection mode; Described Signal Pretreatment unit 3 is by FHSS(Frequency-Hopping Spread Spectrum frequency hopping) technology carries out segmentation filtering and realizes signal high precision collection.
After signal being gathered by data acquisition unit 4, sending IED system unit 5 to by wireless network comprehensively judges.
Described wireless network comprises: bluetooth, Wifi, frequency hopping communication.
Described Signal Pretreatment unit 3 is fixed in same housing with data acquisition unit 4.
When described IED system unit 5 detects the data that data acquisition unit 4 gathered, gathers and definite signal reaches the threshold value of setting, export early warning signal, and provide assessment report by the processor in IED system unit 5.
Described UHF detecting signal unit 1 is crossed coaxial cable with signal conversion unit 2 and is connected, signal conversion unit 2 is connected by wireless receiving and dispatching mode with Signal Pretreatment unit 3, between Signal Pretreatment unit 3 and data acquisition unit 4, be electrically connected, Signal Pretreatment unit 3, data acquisition unit 4 are connected by wireless receiving and dispatching mode with IED system unit 5.
UHF detecting signal unit 1 is installed on the apparatus insulated son of GIS place, for monitoring the local discharge signal of GIS device interior, the detected local discharge signal of UHF detecting signal unit 1 is converted to wireless signal through signal conversion unit 2 and is sent to Signal Pretreatment unit 3, signal reaches data acquisition unit 4 after 3 conditionings of Signal Pretreatment unit, after data being collected by data acquisition unit, reach IED system unit 5, detect measured value and alarming value contrasts, by the processor in IED, the insulation status of GIS equipment is made to assessment, early warning.
As shown in Figure 2, described signal conversion unit 2 is by amplifier, and bounce frequency filter and radio receiving transmitting module one form; Described Signal Pretreatment unit 3 is made up of radio receiving transmitting module two and microprocessor one; Described data acquisition unit 4 is made up of high speed data acquisition system and microprocessor two, the signal that UHF detecting signal unit 1 detects passes to signal conversion unit 2, amplify through amplifier, after bounce frequency filter filtering, pass to radio receiving transmitting module two by radio receiving transmitting module one, signal passes to microprocessor one through radio receiving transmitting module two, and signal after treatment enters microprocessor two through high speed data acquisition system to carry out signal and gather.
It is FB-SCU that described signal conversion unit adopts company's model; It is FB-SPU that Signal Pretreatment unit adopts company's model; It is that FB-DAU realizes that data acquisition unit adopts company's model.
In described microcontroller, coprocessor FPGA model is EP3C25E144I8N; Processor MCU adopts the STM32F427 of ST company.
Described IED system unit, the insulation status of GIS equipment is made before assessment, early warning, need first judge that IED system unit reaches the threshold value of setting.
A kind of partial discharge detecting system localization method,
1. pair testing apparatus is installed multiple UHF detecting signal units.
2. detect the asynchronism(-nization) of point of discharge by UHF detecting signal unit, determine discharge position.
A kind of partial discharge detecting system data processing method, carries out data analysis and electric discharge type processing by expert diagnosis software to the discharge signal detecting.
Set up typical discharge data storehouse by simulating typical shelf depreciation, expert diagnosis software compares to analyze data and electric discharge type processing to the discharge signal detecting and typical discharge data storehouse.
A kind of partial discharge detecting system method for early warning, carries out early warning by sound, optical, electrical, wireless network/mobile network and computer applied algorithm.
A kind of partial discharge detecting system data enquire method, is uploaded to service end by IED system by discharge information, accomplishes to consult in real time by APP application software being installed at mobile device.
Described accomplishes to consult in real time in mobile device installation APP application software, consults content difference according to different its of user's rank.
It should be noted that, the content such as information interaction, implementation between said apparatus and intrasystem each unit, module, due to the inventive method embodiment based on same design, particular content can, referring to the narration in the inventive method embodiment, repeat no more herein.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is can carry out the hardware that instruction is relevant by program to complete, this program can be stored in computer-readable recording medium, storage medium can comprise: ROM (read-only memory) (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD etc.
A kind of the partial discharge detecting system above embodiment of the present invention being provided is described in detail, applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (8)
1. a Portable PD On-Line detection system, it is characterized in that: comprise the UHF detecting signal unit (1) for detection of the insulation defect of GIS inside, amplify for the signal that UHF detecting signal unit (1) is detected, the signal conversion unit (2) of filtering and Signal Pretreatment unit (3), for the data acquisition unit (4) gathering processing rear signal, for data being carried out to the IED system unit (5) of comprehensive judgement, the signal that UHF detecting signal unit (1) detects amplifies signal by signal conversion unit (2), filtering, and signal after treatment is sent to Signal Pretreatment unit (3), Signal Pretreatment unit (3) carries out data analysis arrangement to signal after treatment and sends data acquisition unit (4) to, after signal being gathered by data acquisition unit (4), comprehensively judge to IED system unit (5), insulation status to GIS equipment is made assessment, early warning, data are monitored in real time simultaneously.
2. a Portable PD On-Line detection system, is characterized in that: described signal conversion unit (2) is by amplifier, and bounce frequency filter and radio receiving transmitting module one form, and described Signal Pretreatment unit (3) is made up of radio receiving transmitting module two and microprocessor one, described data acquisition unit (4) is made up of high speed data acquisition system and microprocessor two, the signal that UHF detecting signal unit (1) detects passes to signal conversion unit (2), signal conversion unit (2) amplifies the signal obtaining through amplifier, pass to the radio receiving transmitting module two in Signal Pretreatment unit (3) by after bounce frequency filter filtering by radio receiving transmitting module one again, radio receiving transmitting module two passes to microprocessor one the signal receiving and carries out data analysis arrangement, microprocessor one sends the high speed data acquisition system in data acquisition unit (4) to the signal after analysis and arrangement, high speed data acquisition system sends microprocessor two to after gathering to the received signal carries out signal and gathers.
3. a kind of partial discharge detecting system according to claim 1, is characterized in that: described UHF detecting signal unit (1) detects by superfrequency detection mode; Described Signal Pretreatment unit
(3) carry out segmentation filtering by FHSS technology and realize signals collecting.
4. a kind of partial discharge detecting system according to claim 1, is characterized in that: after by data acquisition unit (4), signal being gathered, send IED system unit (5) to by wireless network and comprehensively judge.
5. a kind of partial discharge detecting system according to claim 4, is characterized in that: described wireless network is any one in bluetooth, Wifi, frequency hopping communication three.
6. a kind of partial discharge detecting system according to claim 1, is characterized in that: described Signal Pretreatment unit (3) is fixed in same housing with data acquisition unit (4).
7. a kind of partial discharge detecting system according to claim 1, it is characterized in that: when the data that described IED system unit (5) gathers, gathers data acquisition unit (4) detect and definite signal reaches the threshold value of setting, export early warning signal, described early warning signal carries out early warning by sound, light, the output of active relay, passive relay output, wireless network, mobile network and computer applied algorithm.
8. a kind of partial discharge detecting system according to claim 1, it is characterized in that: described UHF detecting signal unit (1) is connected by coaxial cable with signal conversion unit (2), between signal conversion unit (2) and Signal Pretreatment unit (3), be connected by wireless receiving and dispatching mode, between Signal Pretreatment unit (3) and data acquisition unit (4), be electrically connected, Signal Pretreatment unit (3), data acquisition unit (4) are connected by wireless receiving and dispatching mode with IED system unit (5).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054046A (en) * | 2016-08-17 | 2016-10-26 | 国家电网公司 | GIS ultrahigh frequency partial discharge online monitoring system |
| CN108414900A (en) * | 2018-03-08 | 2018-08-17 | 云南电网有限责任公司电力科学研究院 | A kind of method and system of detection partial discharge of transformer |
| CN108573225A (en) * | 2018-03-30 | 2018-09-25 | 国网天津市电力公司电力科学研究院 | A kind of local discharge signal mode identification method and system |
| CN109143003A (en) * | 2018-11-05 | 2019-01-04 | 国网河南省电力公司焦作供电公司 | A kind of GIS equipment partial discharge detection system and its method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080030185A (en) * | 2006-09-29 | 2008-04-04 | 주식회사 비츠로시스 | Ultrasonic diagnosing system for transformer |
| JP2010210411A (en) * | 2009-03-10 | 2010-09-24 | Exsym Corp | Partial discharge detector and method of detecting partial discharge |
| CN102288879A (en) * | 2011-04-25 | 2011-12-21 | 天津大学 | Ultrasonic detection device for partial discharge of switchgear based on wireless network |
| CN202217029U (en) * | 2011-08-02 | 2012-05-09 | 天津市电力公司 | Novel partial discharge comprehensive monitoring and analyzing system |
| CN202256583U (en) * | 2011-09-09 | 2012-05-30 | 北京兴泰学成仪器有限公司 | Partial discharge monitoring device for GIS (gas insulated switchgear) withstand voltage test |
| CN102508128A (en) * | 2011-10-24 | 2012-06-20 | 天津大学 | Switch cabinet local discharge transient-to-ground voltage detection system based on wireless network |
| CN102841296A (en) * | 2012-09-10 | 2012-12-26 | 江苏科技大学 | Online monitoring system and method for partial discharge of intelligent switch cabinet based on ultra-high frequency detection |
| CN102999071A (en) * | 2012-11-16 | 2013-03-27 | 宁海县供电局 | Switch cabinet environment intelligent monitoring and processing system based on wireless network |
| CN103197180A (en) * | 2013-03-26 | 2013-07-10 | 国家电网公司 | Intelligent component used for gas insulated switchgear (GIS)/ breaker |
| CN103513165A (en) * | 2012-04-11 | 2014-01-15 | 国网辽宁省电力有限公司鞍山供电公司 | On-line monitoring system and method for GIS ultrahigh frequency local discharge |
| CN103529370A (en) * | 2013-10-30 | 2014-01-22 | 国家电网公司 | Partial discharge detection method for high-voltage switch cabinet |
-
2014
- 2014-05-22 CN CN201410219147.XA patent/CN104049185B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080030185A (en) * | 2006-09-29 | 2008-04-04 | 주식회사 비츠로시스 | Ultrasonic diagnosing system for transformer |
| JP2010210411A (en) * | 2009-03-10 | 2010-09-24 | Exsym Corp | Partial discharge detector and method of detecting partial discharge |
| CN102288879A (en) * | 2011-04-25 | 2011-12-21 | 天津大学 | Ultrasonic detection device for partial discharge of switchgear based on wireless network |
| CN202217029U (en) * | 2011-08-02 | 2012-05-09 | 天津市电力公司 | Novel partial discharge comprehensive monitoring and analyzing system |
| CN202256583U (en) * | 2011-09-09 | 2012-05-30 | 北京兴泰学成仪器有限公司 | Partial discharge monitoring device for GIS (gas insulated switchgear) withstand voltage test |
| CN102508128A (en) * | 2011-10-24 | 2012-06-20 | 天津大学 | Switch cabinet local discharge transient-to-ground voltage detection system based on wireless network |
| CN103513165A (en) * | 2012-04-11 | 2014-01-15 | 国网辽宁省电力有限公司鞍山供电公司 | On-line monitoring system and method for GIS ultrahigh frequency local discharge |
| CN102841296A (en) * | 2012-09-10 | 2012-12-26 | 江苏科技大学 | Online monitoring system and method for partial discharge of intelligent switch cabinet based on ultra-high frequency detection |
| CN102999071A (en) * | 2012-11-16 | 2013-03-27 | 宁海县供电局 | Switch cabinet environment intelligent monitoring and processing system based on wireless network |
| CN103197180A (en) * | 2013-03-26 | 2013-07-10 | 国家电网公司 | Intelligent component used for gas insulated switchgear (GIS)/ breaker |
| CN103529370A (en) * | 2013-10-30 | 2014-01-22 | 国家电网公司 | Partial discharge detection method for high-voltage switch cabinet |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054046A (en) * | 2016-08-17 | 2016-10-26 | 国家电网公司 | GIS ultrahigh frequency partial discharge online monitoring system |
| CN108414900A (en) * | 2018-03-08 | 2018-08-17 | 云南电网有限责任公司电力科学研究院 | A kind of method and system of detection partial discharge of transformer |
| CN108573225A (en) * | 2018-03-30 | 2018-09-25 | 国网天津市电力公司电力科学研究院 | A kind of local discharge signal mode identification method and system |
| CN108573225B (en) * | 2018-03-30 | 2022-01-18 | 国网天津市电力公司电力科学研究院 | Partial discharge signal pattern recognition method and system |
| CN109143003A (en) * | 2018-11-05 | 2019-01-04 | 国网河南省电力公司焦作供电公司 | A kind of GIS equipment partial discharge detection system and its method |
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