CN107942206A - A kind of GIS partial discharge on-Line Monitor Device and localization method - Google Patents
A kind of GIS partial discharge on-Line Monitor Device and localization method Download PDFInfo
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- CN107942206A CN107942206A CN201710957045.1A CN201710957045A CN107942206A CN 107942206 A CN107942206 A CN 107942206A CN 201710957045 A CN201710957045 A CN 201710957045A CN 107942206 A CN107942206 A CN 107942206A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing 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
- G01R31/1209—Testing 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing 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
- G01R31/1227—Testing 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
- G01R31/1254—Testing 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 of gas-insulated power appliances or vacuum gaps
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Abstract
The present invention relates to a kind of GIS partial discharge on-Line Monitor Device to include ultrasonic data acquisition unit, superfrequency data acquisition unit, data processor and host；The invention discloses GIS partial discharge localization method；Time domain waveform of the invention by comparing GIS partial discharge ultrahigh-frequency signal and ultrasonic signal, according to the poor position that GIS partial discharge source is determined using time-of-arrival loaction or acoustoelectric combined time-of-arrival loaction of the electromagnetic sensor time domain waveform signal time that either piezoelectric transducer collects；This joint UHF band electro-detection technology and the method for ultrasonic wave electrified detection technique positioning GIS partial discharge source position, have the advantages that locating speed is fast, positioning accuracy is accurate.
Description
Technical field
The invention belongs to High-Voltage Electrical Appliances insulation defect detection field, be related to a kind of GIS partial discharge on-Line Monitor Device and
Localization method.
Background technology
The high-tension switch gears such as gas insulated combined electrical equipment (Gas Insulated Switchgear, GIS) have operation
Stablize, the features such as floor space is small, non-maintaining, suitable for being used in the high voltage substation of down town or border district.However,
In the manufacture and assembling process of equipment, often due to can make to leave the defects of some are small inside equipment the problems such as technique, such as gold
The defects of category particulate, insulative air gap etc., these are small, may develop into the discharge channel of danger in equipment running process, and
Finally cause apparatus insulated accident.Shelf depreciation is that the important sign and the form of expression of insulation fault occurs.Inside monitoring device
Existing shelf depreciation situation, ensures that the enough reaction time, and effective prediction is done to power equipment and is safeguarded.
At present, supercritical ultrasonics technology and superfrequency method are that two kinds of the Partial Discharge Detection of switchgear progress in operation are compared
Effective detection method, their strong antijamming capabilities, high sensitivity.In contrast, superfrequency method is adapted to carry out equipment long-term
Continuous monitoring, it is necessary to producer in device fabrication built-in pickoff coupler to ensure measurement accuracy；If carried out outside GIS
Site Detection, sensor can only be installed on the insulation junction of GIS device, if signal source is distant, signal strength is low, just
It is highly prone to the interference of the various electromagnetic signals in the external world.Supercritical ultrasonics technology equipment, can be with sensor to GIS device using simplicity
Point-to-point measurement carries out defect location, is adapted to carry out live detection at the scene.Because sensor can be installed on switchgear metal
Any part of shell, can carry out shelf depreciation position that may be present in long-term online prison on the basis of basic detection
Survey.
" the gas-insulated combination of existing partial discharge monitoring detector such as Chinese patent notification number 100363748
Electric appliance shelf depreciation on-line checking positioner and localization method " is all based on the principle of superfrequency come what is realized, and what is also had " becomes
Depressor shelf depreciation alignment system and its localization method " (patent 201210193893.7) uses two kinds of superfrequency and ultrasonic wave
What mode was monitored.Existing GIS partial discharge on-line detecting system requirement is in whole electric system in all GIS devices
Sensor is fixedly mounted, and needs to be laid with a large amount of cables by the signal transmission that these sensors obtain to each high voltage substation
Monitoring center, the processing of data is carried out in monitoring center, this necessarily brings the increase of operating cost for each high voltage substation.So
And these monitoring systems can only perform the function of on-line monitoring, and substation is also needed to individually to purchase partial discharge detection equipment
The conventional inspection of switchgear is carried out, this will improve the operating cost of substation.
The content of the invention
The technical problems to be solved by the invention are to provide the GIS shelf depreciations that a kind of locating speed is fast, positioning accuracy is accurate
On-Line Monitor Device and localization method.
Technical solution is a kind of GIS partial discharge on-Line Monitor Device and positioning used by solve above-mentioned technical problem
Method；Wherein on-Line Monitor Device includes the ultrasonic data acquisition unit of more than one, the superfrequency data acquisition more than 1
Unit, data processor and host；The ultrasonic data acquisition unit connects host through data processor；The superfrequency data
Collecting unit connects host through data processor.
The ultrasonic data acquisition unit includes piezoelectric transducer, operational amplifier, ultrasonic wave AD conversion module, ultrasound
Ripple CPLD modules and ultrasound data transfer bus；The piezoelectric transducer is arranged on GIS outer surface of outer cover；The piezoelectricity passes
The output terminal of sensor is transmitted through operational amplifier, ultrasonic wave AD conversion module, ultrasonic wave CPLD modules and ultrasound data successively
Bus connects the respective input of data processor.
The superfrequency data acquisition unit include electromagnetic sensor, high-pass filter, superfrequency AD modular converters,
Superfrequency CPLD modules and superfrequency data transmission bus；The electromagnetic sensor is arranged on outside GIS disc insulator flanges
Surface；The output terminal of the electromagnetic sensor is successively through high-pass filter, superfrequency AD conversion module, superfrequency CPLD modules
The respective input of data processor is connect with superfrequency data transmission bus.
The quantity of the ultrasonic data acquisition unit is 7；The quantity of the superfrequency data acquisition unit is 4.
The model TMS320F2812 of the data processor；The model IPC-620H of the host；The piezoelectricity passes
The model R3I of sensor；The model AD8610 of the operational amplifier；The model of the ultrasonic wave AD conversion module
TLV5580；The model FLEX10KA of the ultrasonic wave CPLD modules；The model I2C of the ultrasound data transfer bus；
The model model PDS-620W of the electromagnetic sensor；The model HHP0300S of the high-pass filter；The spy
The model TLV5580 of high frequency AD conversion module；The model FLEX10KA of the superfrequency CPLD modules；The extra-high frequency
According to the model I2C of transfer bus.
Wherein localization method includes the following steps：
(1) before shelf depreciation occurs for GIS, obtained respectively using ultrasonic data acquisition unit and superfrequency data acquisition unit
Ambient noise signal, and respectively send ambient noise signal to data processor；Data processor by ambient noise signal into
Row preserves；
(2) when shelf depreciation occurs for GIS, the superfrequency electromagnetic signal that superfrequency data acquisition unit detection GIS is produced is concurrent
Send to data processor；Meanwhile ultrasonic data acquisition unit detects the ultrasonic signal that GIS is produced and sends to data processing
Device；
(3) data processor receives superfrequency electromagnetic signal and ultrasonic signal, and superfrequency electromagnetic signal and ultrasonic wave are believed
The part identical with the ambient noise signal stored in advance removes in number, i.e., goes superfrequency electromagnetic signal and ultrasonic signal
Make an uproar；Superfrequency electromagnetic signal after denoising and the ultrasonic signal after denoising are respectively sent to host by data processor；It is described
Superfrequency electromagnetic signal after denoising includes amplitude, frequency, cycle and the sending time of superfrequency electromagnetic signal；After the denoising
Ultrasonic signal include amplitude, frequency, cycle and the sending time of ultrasonic signal；
(4) the location arrangements situation of live electromagnetic sensor and piezoelectric transducer is input to the expert system built in host；
The expert system judges to be able to detect that the electromagnetic sensor quantity of discharge signal, when the electricity for being able to detect that discharge signal
When magnetic wave sensor is less than 2, the location arrangements of electromagnetic sensor should be adjusted, the electromagnetic wave until detecting discharge signal passes
Sensor is no less than 2；The expert system judges to be able to detect that the piezoelectric transducer quantity of discharge signal, when being able to detect that
When the piezoelectric transducer of discharge signal is less than 2, the location arrangements of piezoelectric transducer should be adjusted, until detecting discharge signal
Piezoelectric transducer is no less than 2；
(5) expert system built in host combines the location arrangements situation of live electromagnetic sensor and piezoelectric transducer, obtains
GIS partial discharge source positions.
The localization method of expert system includes the following steps：
(1) expert system built in host compares superfrequency electromagnetic signal amplitude size, and the bigger measuring point of amplitude is judged as more connecing
The position of nearly discharge source；Expert system built in host compares the amplitude size of ultrasonic signal, and the bigger measuring point of amplitude judges
For closer to the position of discharge source；
(2) expert system built in host is determined closest to electric discharge source position by comparing superfrequency electromagnetic signal amplitude size
2 electromagnetic sensors, record the superfrequency electromagnetic signal that measures of 2 electromagnetic sensors closest to electric discharge source position
Time difference；According to the time difference of superfrequency electromagnetic signal, calculate GIS partial discharge source using time-of-arrival loaction and passed with electromagnetic wave
The distance between sensor, determines GIS partial discharge source position and remembers the electromagnetic sensor nearest apart from GIS partial discharge source
For nearest electromagnetic sensor；
(3) expert system built in host determines 2 closest to electric discharge source position by comparing ultrasonic signal amplitude size
Piezoelectric transducer, records the time difference for the ultrasonic signal that 2 piezoelectric transducers detect；According to the time of ultrasonic signal
Difference, calculates the distance between GIS partial discharge source and ultrasonic sensor using time-of-arrival loaction, determines GIS partial discharge source
The piezoelectric transducer nearest apart from GIS partial discharge source is simultaneously denoted as nearest piezoelectricity wave sensor by position；
(4) whether the GIS partial discharge source position that the definite GIS partial discharge source position of comparison step (2) and step (3) determine
Identical, the position is the position in GIS partial discharge source if identical；
(5) if the GIS partial discharge source position of positioning differs, the superfrequency detected according to nearest electromagnetic sensor is electric
The time difference for the ultrasonic signal that magnetic signal and nearest piezoelectric transducer detect, determined using acoustoelectric combined time-of-arrival loaction
The position in GIS partial discharge source.
The calculation formula of the time-of-arrival loaction is x2=(L2-v2*Δt2)/2；Wherein x2For GIS partial discharge source and most
The distance of nearly piezoelectric transducer, L2For the axial distance between the piezoelectric transducers of 2, v2For the transmission rate of ultrasonic signal,
Δt2The time difference of discharge signal is received for 2 piezoelectric transducers.
The calculation formula of the time-of-arrival loaction is x2=(L2-v2*Δt2)/2；Wherein x2For GIS partial discharge source and most
The distance of nearly piezoelectric transducer, L2For the axial distance between the piezoelectric transducers of 2, v2For the transmission rate of ultrasonic signal,
Δt2The time difference of discharge signal is received for 2 piezoelectric transducers.
The acoustoelectric combined time-of-arrival loaction calculation formula is x3=v3*Δt3；Wherein x3For GIS partial discharge source and most
The distance of nearly piezoelectric transducer, v3For the transmission rate of ultrasonic signal, Δ t3Passed for nearest electromagnetic sensor and nearest piezoelectricity
Sensor receives the time difference of discharge signal.
The beneficial effects of the invention are as follows：The present invention is by comparing GIS partial discharge ultrahigh-frequency signal and ultrasonic signal
Time domain waveform, according to 2 electromagnetic sensors either 2 piezoelectric transducers or 1 electromagnetic sensor and 1 piezoelectric sensing
The time domain waveform signal time that device collects is poor, and GIS parts are determined using time-of-arrival loaction or acoustoelectric combined time-of-arrival loaction
The position of discharge source；This joint UHF band electro-detection technology and ultrasonic wave electrified detection technique positioning GIS partial discharge source
The method of position, has the advantages that locating speed is fast, positioning accuracy is accurate.
Brief description of the drawings
Fig. 1 is GIS partial discharge on-Line Monitor Device functional block diagram.
Fig. 2 is GIS partial discharge localization method flow chart.
Embodiment
Embodiment as shown in Figure 1 understands, it include ultrasonic data acquisition unit of more than one, more than one it is extra-high
Frequency data acquisition unit, data processor and host；The ultrasonic data acquisition unit connects host through data processor；It is described
Superfrequency data acquisition unit connects host through data processor.
The ultrasonic data acquisition unit includes piezoelectric transducer, operational amplifier, ultrasonic wave AD conversion module, ultrasound
Ripple CPLD modules and ultrasound data transfer bus；The piezoelectric transducer is arranged on GIS outer surface of outer cover；The piezoelectricity passes
The output terminal of sensor is transmitted through operational amplifier, ultrasonic wave AD conversion module, ultrasonic wave CPLD modules and ultrasound data successively
Bus connects the respective input of data processor.
The superfrequency data acquisition unit include electromagnetic sensor, high-pass filter, superfrequency AD modular converters,
Superfrequency CPLD modules and superfrequency data transmission bus；The electromagnetic sensor is arranged on outside GIS disc insulator flanges
Surface；The output terminal of the electromagnetic sensor is successively through high-pass filter, superfrequency AD conversion module, superfrequency CPLD modules
The respective input of data processor is connect with superfrequency data transmission bus.
The quantity of the ultrasonic data acquisition unit is 7；The quantity of the superfrequency data acquisition unit is 4.
The model TMS320F2812 of the data processor；The model IPC-620H of the host；The piezoelectricity passes
The model R3I of sensor；The model AD8610 of the operational amplifier；The model of the ultrasonic wave AD conversion module
TLV5580；The model FLEX10KA of the ultrasonic wave CPLD modules；The model I2C of the ultrasound data transfer bus；
The model model PDS-620W of the electromagnetic sensor；The model HHP0300S of the high-pass filter；The spy
The model TLV5580 of high frequency AD conversion module；The model FLEX10KA of the superfrequency CPLD modules；The extra-high frequency
According to the model I2C of transfer bus.
Embodiment as shown in Figure 2 understands that it includes the following steps：
(1) before shelf depreciation occurs for GIS, obtained respectively using ultrasonic data acquisition unit and superfrequency data acquisition unit
Ambient noise signal, and respectively send ambient noise signal to data processor；Data processor by ambient noise signal into
Row preserves；
(2) when shelf depreciation occurs for GIS, the superfrequency electromagnetic signal that superfrequency data acquisition unit detection GIS is produced is concurrent
Send to data processor；Meanwhile ultrasonic data acquisition unit detects the ultrasonic signal that GIS is produced and sends to data processing
Device；
(3) data processor receives superfrequency electromagnetic signal and ultrasonic signal, and superfrequency electromagnetic signal and ultrasonic wave are believed
The part identical with the ambient noise signal stored in advance removes in number, i.e., goes superfrequency electromagnetic signal and ultrasonic signal
Make an uproar；Superfrequency electromagnetic signal after denoising and the ultrasonic signal after denoising are respectively sent to host by data processor；It is described
Superfrequency electromagnetic signal after denoising includes amplitude, frequency, cycle and the sending time of superfrequency electromagnetic signal；After the denoising
Ultrasonic signal include amplitude, frequency, cycle and the sending time of ultrasonic signal；
(4) the location arrangements situation of live electromagnetic sensor and piezoelectric transducer is input to the expert system built in host；
The expert system judges to be able to detect that the electromagnetic sensor quantity of discharge signal, when the electricity for being able to detect that discharge signal
When magnetic wave sensor is less than 2, the location arrangements of electromagnetic sensor should be adjusted, the electromagnetic wave until detecting discharge signal passes
Sensor is no less than 2；The expert system judges to be able to detect that the piezoelectric transducer quantity of discharge signal, when being able to detect that
When the piezoelectric transducer of discharge signal is less than 2, the location arrangements of piezoelectric transducer should be adjusted, until detecting discharge signal
Piezoelectric transducer is no less than 2；
(5) expert system built in host combines the location arrangements situation of live electromagnetic sensor and piezoelectric transducer, obtains
GIS partial discharge source positions.
The localization method of expert system includes the following steps：
(1) expert system built in host compares superfrequency electromagnetic signal amplitude size, and the bigger measuring point of amplitude is judged as more connecing
The position of nearly discharge source；Expert system built in host compares the amplitude size of ultrasonic signal, and the bigger measuring point of amplitude judges
For closer to the position of discharge source；
(2) expert system built in host is determined closest to electric discharge source position by comparing superfrequency electromagnetic signal amplitude size
2 electromagnetic sensors, record the superfrequency electromagnetic signal that measures of 2 electromagnetic sensors closest to electric discharge source position
Time difference；According to the time difference of superfrequency electromagnetic signal, calculate GIS partial discharge source using time-of-arrival loaction and passed with electromagnetic wave
The distance between sensor, determines GIS partial discharge source position and remembers the electromagnetic sensor nearest apart from GIS partial discharge source
For nearest electromagnetic sensor；
(3) expert system built in host determines 2 closest to electric discharge source position by comparing ultrasonic signal amplitude size
Piezoelectric transducer, records the time difference for the ultrasonic signal that 2 piezoelectric transducers detect；According to the time of ultrasonic signal
Difference, calculates the distance between GIS partial discharge source and ultrasonic sensor using time-of-arrival loaction, determines GIS partial discharge source
The piezoelectric transducer nearest apart from GIS partial discharge source is simultaneously denoted as nearest piezoelectricity wave sensor by position；
(4) whether the GIS partial discharge source position that the definite GIS partial discharge source position of comparison step (2) and step (3) determine
Identical, the position is the position in GIS partial discharge source if identical；
(5) if the GIS partial discharge source position of positioning differs, the superfrequency detected according to nearest electromagnetic sensor is electric
The time difference for the ultrasonic signal that magnetic signal and nearest piezoelectric transducer detect, determined using acoustoelectric combined time-of-arrival loaction
The position in GIS partial discharge source.
The calculation formula of the time-of-arrival loaction is x2=(L2-v2*Δt2)/2；Wherein x2For GIS partial discharge source and most
The distance of nearly piezoelectric transducer, L2For the axial distance between the piezoelectric transducers of 2, v2For the transmission rate of ultrasonic signal,
Δt2The time difference of discharge signal is received for 2 piezoelectric transducers.
The calculation formula of the time-of-arrival loaction is x2=(L2-v2*Δt2)/2；Wherein x2For GIS partial discharge source and most
The distance of nearly piezoelectric transducer, L2For the axial distance between the piezoelectric transducers of 2, v2For the transmission rate of ultrasonic signal,
Δt2The time difference of discharge signal is received for 2 piezoelectric transducers.
The acoustoelectric combined time-of-arrival loaction calculation formula is x3=v3*Δt3；Wherein x3For GIS partial discharge source and most
The distance of nearly piezoelectric transducer, v3For the transmission rate of ultrasonic signal, Δ t3Passed for nearest electromagnetic sensor and nearest piezoelectricity
Sensor receives the time difference of discharge signal.
High pass filter unit is used for the electromagnetic wave signal for receiving shelf depreciation generation, and it is defeated to be converted to electric signal after high-pass filtering
Go out.High pass filter unit is high-pass filter, cutoff frequency 300MHz.
Each group of ultrahigh-frequency signal data and ultrasonic signal data are connected by data transmission bus and DSP data processors
Connect, DSP data processors carry out further denoising and sampling analysis to the data of transmission, are stored in SDRAM memory.It is main
Machine reads the data in SDRAM by HPI interfaces, and carrying out signal detection, identification and part using built-in software positions.Host
Built-in expert system can also provide the comprehensive analysis of data final positioning and risk assessment.
GIS partial discharge on-line monitoring system provided by the invention can also carry out data output by USB interface, also may be used
The grid-connected monitoring of system progress is monitored to be transferred to existing electric power online by wireless data transfer module.
Claims (10)
- A kind of 1. GIS partial discharge on-Line Monitor Device, it is characterised in that：Ultrasonic data acquisition unit including more than one, Superfrequency data acquisition unit, data processor and the host of more than one；The ultrasonic data acquisition unit is through data processing Device connects host；The superfrequency data acquisition unit connects host through data processor.
- A kind of 2. GIS partial discharge on-Line Monitor Device according to claim 1, it is characterised in that：The ultrasound wave number Include piezoelectric transducer, operational amplifier, ultrasonic wave AD conversion module, ultrasonic wave CPLD modules and ultrasonic wave number according to collecting unit According to transfer bus；The piezoelectric transducer is arranged on GIS outer surface of outer cover；The output terminal of the piezoelectric transducer is successively through computing Amplifier, ultrasonic wave AD conversion module, ultrasonic wave CPLD modules and ultrasound data transfer bus connect the corresponding of data processor Input terminal.
- A kind of 3. GIS partial discharge on-Line Monitor Device according to claim 2, it is characterised in that：The extra-high frequency Include electromagnetic sensor, high-pass filter, superfrequency AD conversion module, superfrequency CPLD modules and superfrequency according to collecting unit Data transmission bus；The electromagnetic sensor is arranged on GIS disc insulator flange outer faces；The electromagnetic sensor Output terminal connects through high-pass filter, superfrequency AD conversion module, superfrequency CPLD modules and superfrequency data transmission bus successively The respective input of data processor.
- A kind of 4. GIS partial discharge on-Line Monitor Device according to claim 3, it is characterised in that：The ultrasound wave number Quantity according to collecting unit is 7；The quantity of the superfrequency data acquisition unit is 4.
- A kind of 5. GIS partial discharge on-Line Monitor Device according to claim 4, it is characterised in that：The data processing The model TMS320F2812 of device；The model IPC-620H of the host；The model R3I of the piezoelectric transducer；It is described The model AD8610 of operational amplifier；The model TLV5580 of the ultrasonic wave AD conversion module；The ultrasonic wave CPLD moulds The model FLEX10KA of block；The model I2C of the ultrasound data transfer bus；The model of the electromagnetic sensor Model PDS-620W；The model HHP0300S of the high-pass filter；The model of the superfrequency AD conversion module TLV5580；The model FLEX10KA of the superfrequency CPLD modules；The model I2C of the superfrequency data transmission bus.
- 6. GIS partial discharge localization method is carried out using a kind of GIS partial discharge on-Line Monitor Device described in claim 1, It is characterized by comprising following steps：(1) before shelf depreciation occurs for GIS, obtained respectively using ultrasonic data acquisition unit and superfrequency data acquisition unit Ambient noise signal, and respectively send ambient noise signal to data processor；Data processor by ambient noise signal into Row preserves；(2) when shelf depreciation occurs for GIS, the superfrequency electromagnetic signal that superfrequency data acquisition unit detection GIS is produced is concurrent Send to data processor；Meanwhile ultrasonic data acquisition unit detects the ultrasonic signal that GIS is produced and sends to data processing Device；(3) data processor receives superfrequency electromagnetic signal and ultrasonic signal, and superfrequency electromagnetic signal and ultrasonic wave are believed The part identical with the ambient noise signal stored in advance removes in number, i.e., goes superfrequency electromagnetic signal and ultrasonic signal Make an uproar；Superfrequency electromagnetic signal after denoising and the ultrasonic signal after denoising are respectively sent to host by data processor；It is described Superfrequency electromagnetic signal after denoising includes amplitude, frequency, cycle and the sending time of superfrequency electromagnetic signal；After the denoising Ultrasonic signal include amplitude, frequency, cycle and the sending time of ultrasonic signal；(4) the location arrangements situation of live electromagnetic sensor and piezoelectric transducer is input to the expert system built in host； The expert system judges to be able to detect that the electromagnetic sensor quantity of discharge signal, when the electricity for being able to detect that discharge signal When magnetic wave sensor is less than 2, the location arrangements of electromagnetic sensor should be adjusted, the electromagnetic wave until detecting discharge signal passes Sensor is no less than 2；The expert system judges to be able to detect that the piezoelectric transducer quantity of discharge signal, when being able to detect that When the piezoelectric transducer of discharge signal is less than 2, the location arrangements of piezoelectric transducer should be adjusted, until detecting discharge signal Piezoelectric transducer is no less than 2；(5) expert system built in host combines the location arrangements situation of live electromagnetic sensor and piezoelectric transducer, obtains GIS partial discharge source positions.
- 7. GIS partial discharge localization method according to claim 6, it is characterised in that the localization method of expert system includes Following steps：(1) expert system built in host compares superfrequency electromagnetic signal amplitude size, and the bigger measuring point of amplitude is judged as more connecing The position of nearly discharge source；Expert system built in host compares the amplitude size of ultrasonic signal, and the bigger measuring point of amplitude judges For closer to the position of discharge source；(2) expert system built in host is determined closest to electric discharge source position by comparing superfrequency electromagnetic signal amplitude size 2 electromagnetic sensors, record the superfrequency electromagnetic signal that measures of 2 electromagnetic sensors closest to electric discharge source position Time difference；According to the time difference of superfrequency electromagnetic signal, calculate GIS partial discharge source using time-of-arrival loaction and passed with electromagnetic wave The distance between sensor, determines GIS partial discharge source position and remembers the electromagnetic sensor nearest apart from GIS partial discharge source For nearest electromagnetic sensor；(3) expert system built in host determines 2 closest to electric discharge source position by comparing ultrasonic signal amplitude size Piezoelectric transducer, records the time difference for the ultrasonic signal that 2 piezoelectric transducers detect；According to the time of ultrasonic signal Difference, calculates the distance between GIS partial discharge source and ultrasonic sensor using time-of-arrival loaction, determines GIS partial discharge source The piezoelectric transducer nearest apart from GIS partial discharge source is simultaneously denoted as nearest piezoelectricity wave sensor by position；(4) whether the GIS partial discharge source position that the definite GIS partial discharge source position of comparison step (2) and step (3) determine Identical, the position is the position in GIS partial discharge source if identical；(5) if the GIS partial discharge source position of positioning differs, the superfrequency detected according to nearest electromagnetic sensor is electric The time difference for the ultrasonic signal that magnetic signal and nearest piezoelectric transducer detect, determined using acoustoelectric combined time-of-arrival loaction The position in GIS partial discharge source.
- 8. GIS partial discharge localization method according to claim 7, it is characterised in that the calculating of the time-of-arrival loaction is public Formula is x1=(L1-v1*Δt1)/2；Wherein x1For GIS partial discharge source and the distance of nearest electromagnetic sensor, L1For 2 Axial distance between electromagnetic sensor, v1For the transmission rate of superfrequency electromagnetic signal, Δ t1For 2 electromagnetic sensors Receive the time difference of discharge signal.
- 9. GIS partial discharge localization method according to claim 7, it is characterised in that the calculating of the time-of-arrival loaction is public Formula is x2=(L2-v2*Δt2)/2；Wherein x2For GIS partial discharge source and the distance of nearest piezoelectric transducer, L2For the pressure of 2 Axial distance between electric transducer, v2For the transmission rate of ultrasonic signal, Δ t2Electric discharge is received for 2 piezoelectric transducers The time difference of signal.
- 10. GIS partial discharge localization method according to claim 7, it is characterised in that the acoustoelectric combined positioning using TDOA Method calculation formula is x3=v3*Δt3；Wherein x3For GIS partial discharge source and the distance of nearest piezoelectric transducer, v3For ultrasonic wave The transmission rate of signal, Δ t3The time difference of discharge signal is received for nearest electromagnetic sensor and nearest piezoelectric transducer.
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| CN108646153A (en) * | 2018-05-18 | 2018-10-12 | 云南电网有限责任公司电力科学研究院 | Primary equipment partial discharge detection device |
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| CN109932627A (en) * | 2019-04-30 | 2019-06-25 | 国网山东省电力公司烟台供电公司 | A kind of localization method and system of GIS pressure test shelf depreciation |
| CN110007192A (en) * | 2019-02-19 | 2019-07-12 | 中国电力科学研究院有限公司 | A kind of long range GIL Arcing fault localization method and device |
| CN110261741A (en) * | 2019-05-24 | 2019-09-20 | 国网河北省电力有限公司电力科学研究院 | Discharge position localization method, device and the terminal device of high-tension switch gear |
| CN110703050A (en) * | 2019-10-15 | 2020-01-17 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for accurately positioning fault point in GIL (gate in line) voltage withstand test |
| CN110824307A (en) * | 2019-11-07 | 2020-02-21 | 国网江苏省电力有限公司盐城供电分公司 | Electrified positioning system that detects of inside insulation fault of closed cubical switchboard |
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| CN110703050A (en) * | 2019-10-15 | 2020-01-17 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for accurately positioning fault point in GIL (gate in line) voltage withstand test |
| CN110703050B (en) * | 2019-10-15 | 2020-11-13 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for accurately positioning fault point in GIL (gate in line) voltage withstand test |
| CN110824307A (en) * | 2019-11-07 | 2020-02-21 | 国网江苏省电力有限公司盐城供电分公司 | Electrified positioning system that detects of inside insulation fault of closed cubical switchboard |
| CN113960421A (en) * | 2020-07-20 | 2022-01-21 | Abb瑞士股份有限公司 | Method for detecting electric discharge in electrical device and system thereof |
| CN112327108A (en) * | 2020-10-09 | 2021-02-05 | 国网冀北电力有限公司检修分公司 | Tank-type circuit breaker partial discharge ultrasonic signal denoising and time difference identification method |
| CN112363030A (en) * | 2020-10-30 | 2021-02-12 | 上海均赫检测技术有限公司 | Low-voltage bus duct insulation detection method in running state |
| CN112763867A (en) * | 2020-12-23 | 2021-05-07 | 深圳供电局有限公司 | GIS multifrequency section ultrasonic wave partial discharge sensor |
| CN112858845A (en) * | 2020-12-25 | 2021-05-28 | 华电电力科学研究院有限公司 | Partial discharge diagnosis method for gas insulated switchgear |
| CN113391176A (en) * | 2021-07-29 | 2021-09-14 | 广东电网有限责任公司 | GIS partial discharge intelligent monitoring device based on edge calculation |
| CN113608156A (en) * | 2021-08-06 | 2021-11-05 | 云南电网有限责任公司丽江供电局 | False alarm investigation system and judgment method of GIS ultrahigh frequency partial discharge online monitoring device |
| CN113589116A (en) * | 2021-08-11 | 2021-11-02 | 山东通广电子有限公司 | Method and system for detecting partial discharge position |
| CN113589116B (en) * | 2021-08-11 | 2024-06-04 | 山东通广电子股份有限公司 | Method and system for detecting partial discharge position |
| CN116973702A (en) * | 2023-07-31 | 2023-10-31 | 上海莫克电子技术有限公司 | Signal identification method and system applied to GIS partial discharge test |
| CN116973702B (en) * | 2023-07-31 | 2024-04-05 | 上海莫克电子技术有限公司 | Signal identification method and system applied to GIS partial discharge test |
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