CN108169638A - A kind of method of live detection shelf depreciation defect type judgement - Google Patents

A kind of method of live detection shelf depreciation defect type judgement Download PDF

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Publication number
CN108169638A
CN108169638A CN201711479292.1A CN201711479292A CN108169638A CN 108169638 A CN108169638 A CN 108169638A CN 201711479292 A CN201711479292 A CN 201711479292A CN 108169638 A CN108169638 A CN 108169638A
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CN
China
Prior art keywords
superfrequency
switchgear
ultrasonic
collection
discharge
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Application number
CN201711479292.1A
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Chinese (zh)
Inventor
张国栋
李华东
牟旭涛
李建志
王德华
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山东中实易通集团有限公司
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Priority to CN201711479292.1A priority Critical patent/CN108169638A/en
Publication of CN108169638A publication Critical patent/CN108169638A/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
    • G01R31/1227Testing 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
    • G01R31/1263Testing 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 solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • G01R31/1272Testing 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 solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements

Abstract

The invention discloses a kind of methods of live detection shelf depreciation defect type judgement, include the following steps:1) defect test is carried out to switchgear respectively using ultrasonic test method and superfrequency method of testing, partial discharge of switchgear type is tentatively judged according to test result;2) to ultrasonic test method detection gained amplitude profiling results and or superfrequency method of testing detection gained superfrequency profiling results analyze, obtain the final judgement of partial discharge of switchgear type.Superfrequency detection method and ultrasonic tesint method are combined by the present invention, and the summary of experience fed back by long-term Flaw discrimination and later stage defect elimination obtains, completes the judgement of certain or certain several shelf depreciation defect type.

Description

A kind of method of live detection shelf depreciation defect type judgement
Technical field
The present invention relates to equipment deficiency detection fields, specifically, are related to a kind of live detection shelf depreciation defect class The method of type judgement.
Background technology
The insulation system electric discharge of power equipment is since internal field's distortion, local field strength are concentrated, and is situated between so as to cause insulation Caused by gas discharge or breakdown in matter subrange.It is likely to occur on conductor side, it is also possible to be happened at insulator Surface or inside.Be summed up we to find partial discharge of switchgear test method be divided into ultrasonic test method with it is extra-high Frequency method of testing.
Superfrequency detection method:The ultrahigh-frequency signal generated by UHF antenna to power equipment shelf depreciation is examined It surveys, so as to judge apparatus local discharge situation, realizes the judgement of state of insulation.If (PRPS and PRPD) collection of illustrative plates of superfrequency detection It shows dotted collection of illustrative plates and is that non-interfering collection of illustrative plates can be qualitative to there is superfrequency defect.
Ultrasonic tesint method:The ultrasonic signal that detection partial discharge generates propagates what is sensed in power equipment surface metal plate Vibration signal.Ultrasonic tesint method is divided into two kinds of contact ultrasound and non-contact ultrasonic method of testing:Contact ultrasound millivolt (mV) unit is measured, non-contact ultrasonic method of testing measures unit with decibel (dB).General contact ultrasound is recognized more than 2mV Surely there is ultrasonic Flaw;It is contactless to have ultrasonic Flaw with more than more than environment ultrasonic 8dB identifications.
The type of existing shelf depreciation only has part to define and test the broad sense collection of illustrative plates provided after laboratory test.Due to test Exist while the ambient noise at scene, the influence of environment high-frequency wave and various shelf depreciation types so that scene ultrasound Wave (AE) electric discharge collection of illustrative plates and superfrequency electric discharge collection of illustrative plates (PRPS, PRPD) and the typical collection of illustrative plates of shelf depreciation type have larger difference Not, it can not correspond.
Invention content
In view of the shortcomings of the prior art, the present invention proposes a kind of side of live detection shelf depreciation defect type judgement Superfrequency detection method and ultrasonic tesint method are combined by method, this method, the warp fed back by long-term Flaw discrimination and later stage defect elimination It tests summary to obtain, completes the judgement of certain or certain several shelf depreciation defect type.
To achieve these goals, technical scheme is as follows:
A kind of method of live detection shelf depreciation defect type judgement, includes the following steps:
1) defect test is carried out to switchgear using ultrasonic test method and superfrequency method of testing respectively, according to test result Partial discharge of switchgear type is tentatively judged;
2) to ultrasonic test method detection gained amplitude profiling results and or superfrequency method of testing detection gained it is extra-high Frequency profiling results are analyzed, and obtain the final judgement of partial discharge of switchgear type.
Further, in preliminary judgement, if ultrasonic test method detects that switchgear is defective, and superfrequency method of testing is not Detect that switchgear is defective, then it is preliminary to judge that partial discharge of switchgear type is discharged or corona discharge for free particle.
Further, the amplitude collection of illustrative plates of analysis ultrasonic test method detection gained, if the ultrasonic frequency in power frequency period There is no signal in 50Hz and 100Hz frequency ranges, then determine that partial discharge of switchgear type is certainly according to sonication times flight collection of illustrative plates It is discharged by particle.
Further, the amplitude collection of illustrative plates of analysis ultrasonic test method detection gained, if ultrasonic amplitude collection of illustrative plates is shown in work In the frequency period ultrasonic frequency 50Hz and or 100Hz frequency ranges have signal, and ultrasonic frequency is in the signal width of 50Hz frequency ranges Value is more than ultrasonic frequency and then assert that partial discharge of switchgear type is corona discharge in the signal amplitude of 100Hz frequency ranges.
Further, in preliminary judgement, if superfrequency method of testing detects that switchgear is defective, and ultrasonic test method is not It detects that switchgear is defective, then tentatively judges that partial discharge of switchgear type is put for discharge in insulation i.e. internal discharge or surface Electricity.
Further, the superfrequency collection of illustrative plates of analysis superfrequency method of testing detection gained, if superfrequency collection of illustrative plates PRPD shows work Positive-negative half-cycle discharge signal symmetrically then judges partial discharge of switchgear type for internal discharge in the frequency period.
Further, the superfrequency collection of illustrative plates of analysis superfrequency method of testing detection gained, if superfrequency collection of illustrative plates PRPD shows work Positive-negative half-cycle discharge signal is asymmetric in the frequency period or superfrequency collection of illustrative plates PRPS shows that only cluster then judges that switchgear is locally put Electric type is surface-discharge.
Further, in preliminary judgement, if ultrasonic test method detects that switchgear is defective, and superfrequency method of testing It detects that switchgear is defective, then tentatively judges partial discharge of switchgear type for corona discharge or suspended discharge.
Further, the amplitude collection of illustrative plates of analysis ultrasonic test method detection gained, if the ultrasonic wave in detection power frequency period Amplitude collection of illustrative plates be shown in power frequency period ultrasonic frequency 50Hz and or 100Hz frequency ranges have signal and ultrasonic frequency exists The signal amplitude of 50Hz frequency ranges then judges partial discharge of switchgear type more than ultrasonic frequency in the signal amplitude of 100Hz frequency ranges For corona discharge.
Further, the spy of the amplitude collection of illustrative plates of analysis ultrasonic test method detection gained or superfrequency method of testing detection gained High frequency collection of illustrative plates, if ultrasonic frequency is less than signal amplitude of the ultrasonic frequency in 100Hz frequency ranges in the signal amplitude of 50Hz frequency ranges And superfrequency collection of illustrative plates PRPS positive-negative half-cycles have discharge signal and signal is suspended in above collection of illustrative plates and then judges that switchgear is locally put Electric type is suspended discharge.
Compared with prior art, the beneficial effects of the invention are as follows:
Superfrequency detection method and ultrasonic tesint method are combined by the present invention, and fault type is inferred in automation, is by long-term Content feed summary of experience after Flaw discrimination and later stage elimination defect obtains, therefore stronger practical operation is as branch Support, ensures its correctness;Compared with simple defect type defines, according only to practical shelf depreciation test result according to the present invention Content is applied mechanically step by step, you can is quickly drawn a conclusion;It can more accurate, quickly judge the type of defect.For artificial intelligence Energy automated diagnostic partial discharge defect is laid a good groundwork.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows Meaning property embodiment and its explanation do not form the improper restriction to the application for explaining the application.
Fig. 1 is a kind of flow chart of live detection shelf depreciation defect type determination method of the present invention.
Specific embodiment
The present invention is described further with specific embodiment below in conjunction with the accompanying drawings.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.It is unless another It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
In the present invention, term as " on ", " under ", "left", "right", "front", "rear", " vertical ", " level ", " side ", The orientation or position relationship of instructions such as " bottoms " are based on orientation shown in the drawings or position relationship, only to facilitate describing this hair Bright each component or component structure relationship and determining relative, not refer in particular to either component or element in the present invention, it is impossible to understand For limitation of the present invention.
In the present invention, term such as " affixed ", " connected ", " connection " should be interpreted broadly, and expression can be fixedly connected, Can also be integrally connected or be detachably connected;It can be directly connected, can also be indirectly connected by intermediary.For The related scientific research of this field or technical staff can determine the concrete meaning of above-mentioned term in the present invention as the case may be, It is not considered as limiting the invention.
As background technology is introduced, the type that shelf depreciation exists in the prior art only has part definition and laboratory The broad sense collection of illustrative plates provided after interior experiment, due to the ambient noise of test site, the influence of environment high-frequency wave and various parts Exist while electric discharge type so that live ultrasonic wave (AE) electric discharge collection of illustrative plates and superfrequency electric discharge collection of illustrative plates (PRPS, PRPD) and office The problem of typical collection of illustrative plates of portion's electric discharge type has bigger difference, can not correspond, the technical issues of in order to solve as above, this Application provides a kind of method of live detection shelf depreciation defect type judgement, and this method surveys superfrequency detection method and ultrasound Examination method is combined, and the summary of experience fed back by long-term Flaw discrimination and later stage defect elimination obtains, completes certain or certain several part The judgement of discharge defect type.
As shown in Figure 1, a kind of method of live detection shelf depreciation defect type judgement, includes the following steps:
1) defect test is carried out to switchgear using ultrasonic test method and superfrequency method of testing respectively, according to test result Partial discharge of switchgear type is tentatively judged;
2) to ultrasonic test method detection gained amplitude profiling results and or superfrequency method of testing detection gained it is extra-high Frequency profiling results are analyzed, and obtain the final judgement of partial discharge of switchgear type.
In preliminary judgement, if ultrasonic test method detects that switchgear is defective, and superfrequency method of testing is not detected out It is defective to close cabinet, then it is preliminary to judge that partial discharge of switchgear type is discharged or corona discharge for free particle.
Analyze the amplitude collection of illustrative plates of ultrasonic test method detection gained, if in power frequency period ultrasonic frequency in 50H and 100Hz frequency ranges do not have signal, then determine that partial discharge of switchgear type is put for free particle according to sonication times flight collection of illustrative plates Electricity.
The amplitude collection of illustrative plates of ultrasonic test method detection gained is analyzed, is surpassed if ultrasonic amplitude collection of illustrative plates is shown in power frequency period Frequency of sound wave 50Hz and or 100Hz frequency ranges have a signal, and ultrasonic frequency is more than ultrasound in the signal amplitude of 50Hz frequency ranges Wave frequency rate then assert that partial discharge of switchgear type is corona discharge in the signal amplitude of 100Hz frequency ranges.
In preliminary judgement, if superfrequency method of testing detects that switchgear is defective, and ultrasonic test method is not detected out It is defective to close cabinet, then tentatively judges partial discharge of switchgear type for discharge in insulation i.e. internal discharge or surface-discharge.
The superfrequency collection of illustrative plates of superfrequency method of testing detection gained is analyzed, if superfrequency collection of illustrative plates PRPD is shown in power frequency period just Negative half period discharge signal symmetrically then judges partial discharge of switchgear type for internal discharge.
The superfrequency collection of illustrative plates of superfrequency method of testing detection gained is analyzed, if superfrequency collection of illustrative plates PRPD is shown in power frequency period just Negative half period discharge signal is asymmetric or superfrequency collection of illustrative plates PRPS shows that only cluster then judges partial discharge of switchgear type for table It discharges in face.
In preliminary judgement, if ultrasonic test method detects that switchgear is defective, and superfrequency method of testing also detects that out It is defective to close cabinet, then tentatively judges partial discharge of switchgear type for corona discharge or suspended discharge.
The amplitude collection of illustrative plates of ultrasonic test method detection gained is analyzed, if ultrasonic amplitude collection of illustrative plates is shown in detection power frequency period Show in power frequency period ultrasonic frequency 50Hz and or 100Hz frequency ranges have signal and ultrasonic frequency 50Hz frequency ranges letter Number amplitude then judges partial discharge of switchgear type for corona discharge more than ultrasonic frequency in the signal amplitude of 100Hz frequency ranges.
The amplitude collection of illustrative plates of ultrasonic test method detection gained or the superfrequency collection of illustrative plates of superfrequency method of testing detection gained are analyzed, If ultrasonic frequency is less than signal amplitude and superfrequency figure of the ultrasonic frequency in 100Hz frequency ranges in the signal amplitude of 50Hz frequency ranges Spectrum PRPS positive-negative half-cycles have discharge signal and signal is suspended in above collection of illustrative plates and then judges that partial discharge of switchgear type is outstanding Floating electric discharge.
In figure, frequency content 1 is signal amplitude of the ultrasonic frequency in 50Hz frequency ranges, and 2 ultrasonic frequency of frequency content exists The signal amplitude of 100Hz frequency ranges.
The foregoing is merely the preferred embodiments of the application, are not limited to the application, for the skill of this field For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.

Claims (10)

  1. A kind of 1. method of live detection shelf depreciation defect type judgement, it is characterised in that:Include the following steps:
    1) defect test respectively carries out switchgear using ultrasonic test method and superfrequency method of testing, it is split according to test result Cabinet shelf depreciation type is closed tentatively to be judged;
    2) to ultrasonic test method detection gained amplitude profiling results and or superfrequency method of testing detection gained superfrequency figure Spectrum result is analyzed, and obtains the final judgement of partial discharge of switchgear type.
  2. 2. the method for a kind of live detection shelf depreciation defect type judgement as described in claim 1, which is characterized in that preliminary In judgement, if ultrasonic test method detects that switchgear is defective, and that switchgear is not detected is defective for superfrequency method of testing, then It is preliminary to judge that partial discharge of switchgear type is discharged or corona discharge for free particle.
  3. A kind of 3. method of live detection shelf depreciation defect type judgement as claimed in claim 2, which is characterized in that analysis The amplitude collection of illustrative plates of ultrasonic test method detection gained, if ultrasonic frequency does not have in 50Hz and 100Hz frequency ranges in power frequency period Signal then determines that partial discharge of switchgear type is discharged for free particle according to sonication times flight collection of illustrative plates.
  4. A kind of 4. method of live detection shelf depreciation defect type judgement as claimed in claim 2, which is characterized in that analysis The amplitude collection of illustrative plates of ultrasonic test method detection gained, if ultrasonic amplitude collection of illustrative plates is shown in ultrasonic frequency in power frequency period and exists 50Hz and or 100Hz frequency ranges have signal, and ultrasonic frequency exists in the signal amplitude of 50Hz frequency ranges more than ultrasonic frequency The signal amplitude of 100Hz frequency ranges then assert that partial discharge of switchgear type is corona discharge.
  5. 5. the method for a kind of live detection shelf depreciation defect type judgement as described in claim 1, which is characterized in that preliminary In judgement, if superfrequency method of testing detects that switchgear is defective, and that switchgear is not detected is defective for ultrasonic test method, then Tentatively judge partial discharge of switchgear type for discharge in insulation i.e. internal discharge or surface-discharge.
  6. A kind of 6. method of live detection shelf depreciation defect type judgement as claimed in claim 5, which is characterized in that analysis The superfrequency collection of illustrative plates of superfrequency method of testing detection gained, if superfrequency collection of illustrative plates PRPD shows positive-negative half-cycle electric discharge letter in power frequency period Number symmetrically then judge partial discharge of switchgear type for internal discharge.
  7. A kind of 7. method of live detection shelf depreciation defect type judgement as claimed in claim 5, which is characterized in that analysis The superfrequency collection of illustrative plates of superfrequency method of testing detection gained, if superfrequency collection of illustrative plates PRPD shows positive-negative half-cycle electric discharge letter in power frequency period Number asymmetry or superfrequency collection of illustrative plates PRPS show that only cluster then judges partial discharge of switchgear type for surface-discharge.
  8. 8. the method for a kind of live detection shelf depreciation defect type judgement as described in claim 1, which is characterized in that preliminary In judgement, if ultrasonic test method detects that switchgear is defective, and superfrequency method of testing also detects that switchgear is defective, then Tentatively judge partial discharge of switchgear type for corona discharge or suspended discharge.
  9. A kind of 9. method of live detection shelf depreciation defect type judgement as claimed in claim 8, which is characterized in that analysis The amplitude collection of illustrative plates of ultrasonic test method detection gained, if ultrasonic amplitude collection of illustrative plates is shown in power frequency period in detection power frequency period Interior ultrasonic frequency 50Hz and or 100Hz frequency ranges have signal and ultrasonic frequency be more than in the signal amplitude of 50Hz frequency ranges it is super Frequency of sound wave then judges partial discharge of switchgear type for corona discharge in the signal amplitude of 100Hz frequency ranges.
  10. 10. a kind of method of live detection shelf depreciation defect type judgement as claimed in claim 8, which is characterized in that point The amplitude collection of illustrative plates of ultrasonic test method detection gained or the superfrequency collection of illustrative plates of superfrequency method of testing detection gained are analysed, if ultrasonic wave frequency Rate is positive and negative in the signal amplitude and superfrequency collection of illustrative plates PRPS of 100Hz frequency ranges less than ultrasonic frequency in the signal amplitude of 50Hz frequency ranges Half cycle has discharge signal and signal is suspended in above collection of illustrative plates and then judges partial discharge of switchgear type for suspended discharge.
CN201711479292.1A 2017-12-29 2017-12-29 A kind of method of live detection shelf depreciation defect type judgement CN108169638A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108802586A (en) * 2018-08-24 2018-11-13 海南电网有限责任公司电力科学研究院 A kind of recognition methods for transmission line of electricity corona discharge and paradoxical discharge
CN109142997A (en) * 2018-08-31 2019-01-04 国网河北省电力有限公司沧州供电分公司 Switchgear detection system and method
CN110161388A (en) * 2019-06-10 2019-08-23 上海交通大学 A kind of the fault type recognition method and its system of high-tension apparatus

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KR20130047418A (en) * 2011-10-31 2013-05-08 한국전력공사 Apparatus and method for diagnosing partial discharge of high voltage facilities using a plurality of sensors
CN203502550U (en) * 2013-10-24 2014-03-26 国家电网公司 Partial discharge live detection device
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
KR101691164B1 (en) * 2016-04-12 2016-12-30 민지원 Diagnostic unit for combined deterioration of power utilities
CN106707128A (en) * 2017-03-16 2017-05-24 国家电网公司 Acoustoelectric associated local cable discharge locating device and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130047418A (en) * 2011-10-31 2013-05-08 한국전력공사 Apparatus and method for diagnosing partial discharge of high voltage facilities using a plurality of sensors
CN203502550U (en) * 2013-10-24 2014-03-26 国家电网公司 Partial discharge live detection device
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
KR101691164B1 (en) * 2016-04-12 2016-12-30 민지원 Diagnostic unit for combined deterioration of power utilities
CN106707128A (en) * 2017-03-16 2017-05-24 国家电网公司 Acoustoelectric associated local cable discharge locating device and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108802586A (en) * 2018-08-24 2018-11-13 海南电网有限责任公司电力科学研究院 A kind of recognition methods for transmission line of electricity corona discharge and paradoxical discharge
CN108802586B (en) * 2018-08-24 2019-07-23 海南电网有限责任公司电力科学研究院 A kind of recognition methods for transmission line of electricity corona discharge and paradoxical discharge
CN109142997A (en) * 2018-08-31 2019-01-04 国网河北省电力有限公司沧州供电分公司 Switchgear detection system and method
CN110161388A (en) * 2019-06-10 2019-08-23 上海交通大学 A kind of the fault type recognition method and its system of high-tension apparatus
CN110161388B (en) * 2019-06-10 2021-04-06 上海交通大学 Fault type identification method and system of high-voltage equipment

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