CN107942207A - GIS breaker gas chamber fault detection of local discharge and type judgement method - Google Patents

GIS breaker gas chamber fault detection of local discharge and type judgement method Download PDF

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Publication number
CN107942207A
CN107942207A CN201710989107.7A CN201710989107A CN107942207A CN 107942207 A CN107942207 A CN 107942207A CN 201710989107 A CN201710989107 A CN 201710989107A CN 107942207 A CN107942207 A CN 107942207A
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discharge
signal
gas chamber
phase
waveform
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CN201710989107.7A
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Chinese (zh)
Inventor
李永祥
亢银柱
王天正
郭力强
王志鹏
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Shandong Electric Power Research Institute
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Shandong Electric Power Research Institute
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Priority to CN201710989107.7A priority Critical patent/CN107942207A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1209Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G01R31/1254Testing 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

Abstract

The invention discloses a kind of GIS breakers gas chamber fault detection of local discharge and type judgement method, and it is inaccurate to solve the problems, such as that GIS breakers gas chamber fault detection of local discharge existing for existing apparatus judges with electric discharge type not in time.Pass through data analyzer(4)Measure the Partial Discharge Detection collection of illustrative plates that GIS breakers are tested gas chamber;To collection of illustrative plates under continuous detection pattern, under phase detection mode, in statistical signal phase(PRPD)/ pulse train(PRPS)Analyzed, drawn under collection of illustrative plates:Suspended discharge type, free metal particle electric discharge type and metal tip electric discharge type.Deficiency existing for compensate for GIS equipment partial discharge on-line monitoring sensor, improves the detection level of shelf depreciation inside GIS device, has ensured the safe and reliable operation of electric system.

Description

GIS breaker gas chamber fault detection of local discharge and type judgement method
Technical field
The invention belongs to high-voltage electrical appliances field, the gas chamber of more particularly to a kind of extra-high voltage or super-pressure GIS breakers is local Discharge fault detects and type judgement method.
Background technology
Compared with traditional open type high-voltage electrical equipment, GIS have floor space is small, reliability is high, service life is long, The advantages that maintenance workload is few, is widely used in electric system.Include breaker in GIS, disconnecting switch, ground connection are opened The devices such as pass, current transformer, busbar, SF6 gases are widely used in GIS with its excellent insulation characterisitic and arc extinction performance In equipment.Multiple gas chambers are typically provided with GIS device, each gas chamber is isolated by insulating basin.GIS device is in design, system Make, transport, the insulation defects of various latencys can be produced during installation and maintenance etc., these defects can progressively develop into cause Make the sudden Fault of Insulating Breakdown that apparatus insulated ability completely loses.Shelf depreciation is the main table of GIS device insulation degradation Existing form, the insulation degradation mechanism that different electric discharge types are reflected is different, and different electric discharge types insulate GIS device Caused by the extent of damage it is also different.Have for three kinds of GIS device inside shelf depreciation type:(1)Floating potential discharge:Belong to and loosening The floating potential discharge of component, the electric discharge between non-moving metallic particles and part of appliance;(2)Free metal particle discharges:Belong to Shelf depreciation between metallic particles and metallic particles, the shelf depreciation between metallic particles and metal parts;(3)Metal tip is put Electricity:Belong to metal part surface machined burrs, the shelf depreciation of enclosure interior metallic foreign body.In recent years, live GIS device is also installed Some shelf depreciation detecting line sensors, but since sensor performance is bad, sensor unreasonable allocation, frequently results in Sensor detection failure, missing inspection and fails to report that problem is serious, has influenced the normal orderly of the detection of shelf depreciation inside GIS device Carry out.
The content of the invention
The present invention provides a kind of GIS breakers gas chamber fault detection of local discharge and type judgement method, solves existing There is GIS breakers gas chamber fault detection of local discharge existing for device to judge that inaccurate technology is asked with electric discharge type not in time Topic.
The present invention is to solve above technical problem by the following technical programs:
A kind of GIS breakers gas chamber fault detection of local discharge and type judgement method, it is characterised in that following steps:
The first step, link together data analyzer and signal amplifier, and signal amplifier is super by a signal wire connection Sonic sensor, signal amplifier connect extra-high video sensor by another signal wire;By ultrasonic sensor be placed on by Survey on the support metal frame of gas chamber, superfrequency sensor alignment is tested the outer space around gas chamber, to tested gas chamber week Collarette border is detected, and data analyzer is recorded the external interference signals detected;
Second step, the insulating basin that extra-high video sensor is installed on to tested gas chamber exposed lateral side on, by ultrasonic sensor It is placed on the lateral wall of tested gas chamber;Measure to obtain GIS breakers by data analyzer and be tested the shelf depreciation of gas chamber and examine Mapping is composed;
3rd step, the Partial Discharge Detection collection of illustrative plates for being tested according to GIS breakers gas chamber, you can judge that GIS breakers are tested gas Room whether there is partial discharge phenomenon, if discharge off phenomenon, discharge fault detection work terminates;If there is electric discharge phenomena, into The following waveform characteristic analysis of row;
A, data analyzer is arranged on continuous detection pattern:If the virtual value and cycle peak of discharge waveform signal are larger, There are 50Hz frequencies waveform component and 100Hz frequency waveform components, and 100Hz frequencies waveform component is more than 50Hz frequency waveforms Component;
Data analyzer is arranged on phase detection mode:If discharge waveform signal has phase building-up effect, in a power frequency Two clusters are shown as in cycle, that is, there is " bimodal " feature;
In statistical signal phase(PRPD)/ pulse train(PRPS)Under collection of illustrative plates:Discharge waveform signal in operating frequency phase positive and negative half Week occurs, and has symmetry, and discharge signal amplitude is very big, and neighbouring discharge signal interval is basically identical, discharge time Few, electric discharge repetitive rate is relatively low, has " interior eight word " or " toed-out " distribution characteristics;
Meet these conditions, the shelf depreciation that GIS breakers are tested gas chamber is suspended discharge type;
B, data analyzer is arranged on continuous detection pattern:If the virtual value and cycle peak of discharge waveform signal are larger, but 50Hz frequencies waveform component and 100Hz frequency waveform component unobvious;
Data analyzer is arranged on phase detection mode:If discharge waveform signal does not have obvious phase building-up effect, one It is similar in a power frequency period to be uniformly distributed;
In statistical signal phase(PRPD)/ pulse train(PRPS)Under collection of illustrative plates:Discharge waveform signal polarity effect unobvious, arbitrarily It is distributed in phase, discharge time is few, and discharge signal amplitude is without evident regularity, and discharge signal time interval is unstable, if carrying Voltage levels discharge signal waveforms amplitude increases, but inter-spike intervals reduce;
Meet these conditions, the shelf depreciation that GIS breakers are tested gas chamber is free metal particle electric discharge type;
C, data analyzer is arranged on continuous detection pattern:If the virtual value and cycle peak of discharge waveform signal are larger, deposit In obvious 50Hz frequencies waveform component and 100Hz frequency waveform components, and 50Hz frequencies waveform component is more than 100Hz frequency waves Formed and divided;
By data analyzer(4)It is arranged on phase detection mode:Discharge waveform signal has obvious phase building-up effect, one Cluster is shown as in a power frequency period, that is, there is " unimodal " feature;
In statistical signal phase(PRPD)/ pulse train(PRPS)Under collection of illustrative plates:The polar effect of discharge waveform signal clearly, Usually occur in the negative half period or positive half cycle of operating frequency phase, discharge signal waveform characteristics are weaker and phase distribution is wider, electric discharge time Number is more;
Meet these conditions, the shelf depreciation that GIS breakers are tested gas chamber is metal tip electric discharge type.
The detecting system of the present invention is simple in structure and easy to implement, can quickly be looked for for the determination methods proposed The insulation defect of various latencys can be produced during design, manufacture, transport, installation and maintenance etc. by going out GIS breakers gas chamber, According to different electric discharge atlas analysis difference electric discharge types, so that the defects of judging GIS breaker gas chambers situation, while can be with Partial discharges fault type applied to other gas chambers judges;GIS equipment partial discharge on-line monitoring sensor is compensate for exist Deficiency, improve the detection level of shelf depreciation inside GIS device, ensured the safe and reliable operation of electric system.
Brief description of the drawings
Fig. 1 is that embodiment of the present invention GIS breaker gas chamber partial discharges fault type detections are integrally tied with determination methods Structure schematic diagram;
GIS breaker gas chamber background environment test philosophy structure charts are tested in Fig. 2 embodiment of the present invention;
Fig. 3 suspended discharge type detection collection of illustrative plates;
Fig. 4 free metal particle discharge examination collection of illustrative plates;
Fig. 5 metal tip discharge examination collection of illustrative plates.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings:
A kind of GIS breakers gas chamber fault detection of local discharge and type judgement method, it is characterised in that following steps:
The first step, link together data analyzer 4 and signal amplifier 3, and signal amplifier 3 is connected by a signal wire Ultrasonic sensor 1, signal amplifier 3 connect extra-high video sensor 2 by another signal wire;Ultrasonic sensor 1 is put Put on the support metal frame 8 of tested gas chamber, extra-high video sensor 2 is directed at the outer space around tested gas chamber, to quilt Survey gas chamber surrounding environment to be detected, data analyzer 4 is recorded the external interference signals detected;
Second step, the insulating basin that extra-high video sensor 2 is installed on to tested gas chamber exposed lateral side on, by ultrasonic sensor 1 is placed on the lateral wall of tested gas chamber;Measure to obtain the shelf depreciation that GIS breakers are tested gas chamber by data analyzer 4 Test map;
3rd step, the Partial Discharge Detection collection of illustrative plates for being tested according to GIS breakers gas chamber, you can judge that GIS breakers are tested gas Room whether there is partial discharge phenomenon, if discharge off phenomenon, discharge fault detection work terminates;If there is electric discharge phenomena, into The following waveform characteristic analysis of row;
A, data analyzer 4 is arranged on continuous detection pattern:If the virtual value and cycle peak of discharge waveform signal are larger, There are 50Hz frequencies waveform component and 100Hz frequency waveform components, and 100Hz frequencies waveform component is more than 50Hz frequency waveforms Component;
Data analyzer 4 is arranged on phase detection mode:If discharge waveform signal has phase building-up effect, in a power frequency Two clusters are shown as in cycle, that is, there is " bimodal " feature;
In statistical signal phase(PRPD)/ pulse train(PRPS)Under collection of illustrative plates:Discharge waveform signal in operating frequency phase positive and negative half Week occurs, and has symmetry, and discharge signal amplitude is very big, and neighbouring discharge signal interval is basically identical, discharge time Few, electric discharge repetitive rate is relatively low, has " interior eight word " or " toed-out " distribution characteristics;
Meet these conditions, the shelf depreciation that GIS breakers are tested gas chamber is suspended discharge type;
B, data analyzer 4 is arranged on continuous detection pattern:If the virtual value and cycle peak of discharge waveform signal are larger, but 50Hz frequencies waveform component and 100Hz frequency waveform component unobvious;
Data analyzer 4 is arranged on phase detection mode:If discharge waveform signal does not have obvious phase building-up effect, one It is similar in a power frequency period to be uniformly distributed;
In statistical signal phase(PRPD)/ pulse train(PRPS)Under collection of illustrative plates:Discharge waveform signal polarity effect unobvious, arbitrarily It is distributed in phase, discharge time is few, and discharge signal amplitude is without evident regularity, and discharge signal time interval is unstable, if carrying Voltage levels discharge signal waveforms amplitude increases, but inter-spike intervals reduce;
Meet these conditions, the shelf depreciation that GIS breakers are tested gas chamber is free metal particle electric discharge type;
C, data analyzer 4 is arranged on continuous detection pattern:If the virtual value and cycle peak of discharge waveform signal are larger, deposit In obvious 50Hz frequencies waveform component and 100Hz frequency waveform components, and 50Hz frequencies waveform component is more than 100Hz frequency waves Formed and divided;
By data analyzer(4)It is arranged on phase detection mode:Discharge waveform signal has obvious phase building-up effect, one Cluster is shown as in a power frequency period, that is, there is " unimodal " feature;
In statistical signal phase(PRPD)/ pulse train(PRPS)Under collection of illustrative plates:The polar effect of discharge waveform signal clearly, Usually occur in the negative half period or positive half cycle of operating frequency phase, discharge signal waveform characteristics are weaker and phase distribution is wider, electric discharge time Number is more;
Meet these conditions, the shelf depreciation that GIS breakers are tested gas chamber is metal tip electric discharge type.
GIS breaker plenum interior local discharge signals are measured by ultrasonic sensor 1 and extra-high video sensor 2, profit Amplify tested detection signal, amplitude, shape and cycle characteristics using data analyzer 4 to Partial discharge signal with signal amplifier 3 Analyzed, it can be achieved that the judgement of tested GIS breaker plenum interior shelf depreciation types;If abnormal signal, it is necessary to sentence Disconnected different electric discharge type, specific determination methods are as follows:
(1)Under continuous detection pattern:Its signal virtual value, cycle peak are larger, there are obvious 50Hz frequency contents and 100Hz frequency contents, and 100Hz frequency contents are more than 50Hz frequency contents;Under phase detection mode:Its signal has obvious Phase building-up effect, two clusters are shown as in a power frequency period, that is, have " bimodal " feature;(Statistical signal phase)PRPD/ (Pulse train)Under PRPS collection of illustrative plates:Occur in the positive and negative half cycle of operating frequency phase, and there is certain symmetry, discharge signal amplitude Very big and neighbouring discharge signal interval is basically identical, and discharge time is few, and electric discharge repetitive rate is relatively low, have " interior eight word " or " toed-out " distribution characteristics, then be judged as suspended discharge type, in detail as shown in Figure 3;
(2)Under continuous detection pattern:Its signal virtual value, cycle peak are larger, but 50Hz frequency contents and 100Hz frequencies into Divide unobvious;Under phase detection mode:Its signal does not have obvious phase building-up effect, similar uniform in a power frequency period Distribution;(Statistical signal phase)PRPD/(Pulse train)Under collection of illustrative plates:Discharge signal polar effect unobvious, in arbitrary phase It is distributed, discharge time is few, and discharge signal amplitude is unstable without evident regularity, discharge signal time interval.Improve voltage class Discharge signal amplitude increases but inter-spike intervals reduce, then is judged as free metal particle electric discharge type, in detail as shown in Figure 4;
(3)Under continuous detection pattern:Its signal virtual value, cycle peak are larger, there are obvious 50Hz frequency contents and 100Hz frequency contents, and 50Hz frequency contents are more than 100Hz frequency contents;Under phase detection mode, its signal has obvious Phase building-up effect, cluster is shown as in a power frequency period, that is, has " unimodal " feature;(Statistical signal phase)PRPD/ (Pulse train)Under collection of illustrative plates:The polar effect of discharge signal clearly, usually goes out in the negative half period or positive half cycle of operating frequency phase Existing, discharge signal intensity is weaker and phase distribution is wider, and discharge time is more, then is judged as metal tip electric discharge type, refers to Shown in Fig. 5;
Upon completion of the assays, preserved by the spectrogram under corresponding detection pattern of the data analyzer to detecting signal, so as to Carry out next step data analysis.

Claims (1)

1. a kind of GIS breakers gas chamber fault detection of local discharge and type judgement method, it is characterised in that following steps:
The first step, by data analyzer(4)With signal amplifier(3)Link together, signal amplifier(3)Pass through a signal Line connects ultrasonic sensor(1), signal amplifier(3)Extra-high video sensor is connected by another signal wire(2);By ultrasound Wave sensor(1)It is placed on the support metal frame of tested gas chamber(8)On, by extra-high video sensor(2)Alignment tested gas chamber week The outer space enclosed, is detected tested gas chamber surrounding environment, data analyzer(4)The external interference signals detected are given With record;
Second step, by extra-high video sensor(2)In the exposed lateral side of the insulating basin of tested gas chamber, by supersonic sensing Device(1)It is placed on the lateral wall of tested gas chamber;Pass through data analyzer(4)Measure to obtain the office that GIS breakers are tested gas chamber Portion's discharge examination collection of illustrative plates;
3rd step, the Partial Discharge Detection collection of illustrative plates for being tested according to GIS breakers gas chamber, you can judge that GIS breakers are tested gas Room whether there is partial discharge phenomenon, if discharge off phenomenon, discharge fault detection work terminates;If there is electric discharge phenomena, into The following waveform characteristic analysis of row;
A, by data analyzer(4)It is arranged on continuous detection pattern:If the virtual value and cycle peak of discharge waveform signal compared with Greatly, there are 50Hz frequencies waveform component and 100Hz frequency waveform components, and 100Hz frequencies waveform component is more than 50Hz frequencies Waveform component;
By data analyzer(4)It is arranged on phase detection mode:If discharge waveform signal has phase building-up effect, in a work Two clusters are shown as in the frequency cycle, that is, there is " bimodal " feature;
In statistical signal phase(PRPD)/ pulse train(PRPS)Under collection of illustrative plates:Discharge waveform signal in operating frequency phase positive and negative half Week occurs, and has symmetry, and discharge signal amplitude is very big, and neighbouring discharge signal interval is basically identical, discharge time Few, electric discharge repetitive rate is relatively low, has " interior eight word " or " toed-out " distribution characteristics;
Meet these conditions, the shelf depreciation that GIS breakers are tested gas chamber is suspended discharge type;
B, by data analyzer(4)It is arranged on continuous detection pattern:If the virtual value and cycle peak of discharge waveform signal are larger, But 50Hz frequencies waveform component and 100Hz frequency waveform component unobvious;
By data analyzer(4)It is arranged on phase detection mode:If discharge waveform signal does not have obvious phase building-up effect, It is similar in one power frequency period to be uniformly distributed;
In statistical signal phase(PRPD)/ pulse train(PRPS)Under collection of illustrative plates:Discharge waveform signal polarity effect unobvious, arbitrarily It is distributed in phase, discharge time is few, and discharge signal amplitude is without evident regularity, and discharge signal time interval is unstable, if carrying Voltage levels discharge signal waveforms amplitude increases, but inter-spike intervals reduce;
Meet these conditions, the shelf depreciation that GIS breakers are tested gas chamber is free metal particle electric discharge type;
C, by data analyzer(4)It is arranged on continuous detection pattern:If the virtual value and cycle peak of discharge waveform signal are larger, There are obvious 50Hz frequencies waveform component and 100Hz frequency waveform components, and 50Hz frequencies waveform component is more than 100Hz frequencies Waveform component;
By data analyzer(4)It is arranged on phase detection mode:Discharge waveform signal has obvious phase building-up effect, one Cluster is shown as in a power frequency period, that is, there is " unimodal " feature;
In statistical signal phase(PRPD)/ pulse train(PRPS)Under collection of illustrative plates:The polar effect of discharge waveform signal clearly, Usually occur in the negative half period or positive half cycle of operating frequency phase, discharge signal waveform characteristics are weaker and phase distribution is wider, electric discharge time Number is more;
Meet these conditions, the shelf depreciation that GIS breakers are tested gas chamber is metal tip electric discharge type.
CN201710989107.7A 2017-10-22 2017-10-22 GIS breaker gas chamber fault detection of local discharge and type judgement method Withdrawn CN107942207A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103558520A (en) * 2013-11-02 2014-02-05 国家电网公司 Partial-discharge electrification detecting system and locating method for gas-insulation combined electrical appliance
KR101486994B1 (en) * 2013-09-27 2015-01-29 한국전력공사 Portable partial discharge measurement device for ultra high voltage transformer
CN105021958A (en) * 2014-07-27 2015-11-04 国家电网公司 Switch cabinet partial discharge data recording and analyzing method based on multi-sensor detection
CN106707048A (en) * 2015-11-12 2017-05-24 中国电力科学研究院 GIS combined electric appliance intelligent component performance detection device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101486994B1 (en) * 2013-09-27 2015-01-29 한국전력공사 Portable partial discharge measurement device for ultra high voltage transformer
CN103558520A (en) * 2013-11-02 2014-02-05 国家电网公司 Partial-discharge electrification detecting system and locating method for gas-insulation combined electrical appliance
CN105021958A (en) * 2014-07-27 2015-11-04 国家电网公司 Switch cabinet partial discharge data recording and analyzing method based on multi-sensor detection
CN106707048A (en) * 2015-11-12 2017-05-24 中国电力科学研究院 GIS combined electric appliance intelligent component performance detection device

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