CN110286306A - A kind of high frequency partial discharge test method for GIS device - Google Patents
A kind of high frequency partial discharge test method for GIS device Download PDFInfo
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- CN110286306A CN110286306A CN201910697418.5A CN201910697418A CN110286306A CN 110286306 A CN110286306 A CN 110286306A CN 201910697418 A CN201910697418 A CN 201910697418A CN 110286306 A CN110286306 A CN 110286306A
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- gis device
- partial discharge
- high frequency
- test method
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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
Abstract
The invention discloses a kind of high frequency partial discharge test methods for GIS device, the following steps are included: S1: the connection of instrument and the setting of parameter, the point-by-point generaI investigation of S2:GIS equipment, S3: comparison waveform judges aeration orifice, S4: the Primary Location of point of discharge, S5: the accurate positioning of point of discharge.In the present invention, this is used for the high frequency partial discharge test method of GIS device by the way of high-frequency test, effectively avoid the corona of electric system and the interference phenomenon of radio and television radio, and cooperate isometric coaxial cable as connection phenomenon, also the measurement sensitivity to point of discharge signal is further improved, ensure the precision of test process, simultaneously also can the spark location to GIS device carry out the localization process of descending range, the phenomenon that preventing the position inaccurate that may occur when a positioning operation, so as to fast and safely navigate to point of discharge, improve the accuracy of the high frequency partial discharge test of GIS device.
Description
Technical field
The present invention relates to GIS device partial discharge the field of test technology more particularly to a kind of high frequency partial discharge surveys for GIS device
Method for testing.
Background technique
GIS is the abbreviation of gas-insulating and fully-enclosed combined electrical apparatus, and GIS is by breaker, disconnecting switch, earthing switch, mutual inductance
The composition such as device, arrester, bus, connector and outlet terminal, these equipment or component are all enclosed in the shell of metallic ground
In, the SF6 insulating gas filled with certain pressure inside it, therefore also referred to as SF6 fully closed combined electric unit, if containing in GIS device
Sewage, it is inadequate to will lead to sulfur hexafluoride purity, the horizontal degradation of GIS device built-in electrical insulation is caused, when transformer equipment operated
When occurring overvoltage or voltage fluctuation in journey, it be easy to cause GIS device in operation to discharge its shell, causes transformer equipment over the ground
Short circuit causes unplanned outage, and supply load is caused to lose, it is therefore desirable to partial discharge test is carried out to GIS device, at present right
When GIS device carries out partial discharge test, extraneous corona and electromagnetism can interfere the test process of partial discharge, lead to partial discharge data
The inaccuracy of test can not accurately judge whether GIS device occurs partial discharge phenomenon, and can not also carry out accurately to partial discharge point
Localization process, cause GIS insufficient using security and stability.
Summary of the invention
The purpose of the present invention is to solve disadvantage existing in the prior art, and propose a kind of for GIS device
High frequency partial discharge test method.
To achieve the goals above, present invention employs following technical solutions: a kind of high frequency partial discharge survey for GIS device
Method for testing, comprising the following steps:
S1: digital oscilloscope and two UHF sensings is arranged according to the demand of high-frequency test in the connection of instrument and the setting of parameter
The operating parameter of device connects the channel RO of type UHF sensor, type UHF sensor is lain in the insulation of the GIS device of main pipe junction
On box；
A, b, c, d, e, f, g, h, i point are attached by the point-by-point generaI investigation of S2:GIS equipment one by one using digital oscilloscope, and right
The signal of these points is generally investigated one by one, and the corresponding signal data in each shop is obtained out of digital oscilloscope；
S3: comparison waveform judges aeration orifice, the signal waveform that obtained digital oscilloscope obtains and experiment simulation metal loosening portion
The signal data comparison of part point of discharge judges whether unanimously, to compare period and the amplitude of waveform, in conjunction with point of SF6 gas decomposition product
Analysis is as a result, judge occur the position that metal parts loosens or suspend point in GIS device；
S4: the Primary Location of point of discharge resets the operating parameter of digital oscilloscope and type UHF sensor, by two of type UHF sensor
The channel HO is respectively connected to the channel 1 and channel 2 of digital oscilloscope by cable, passes through the conduction judgement electric discharge point of electromagnetic wave
It sets；
S5: the accurate positioning of point of discharge, according to the specific location of A, B, C three-phase in GIS device internal structure and main pipe, to electric discharge
Point is further positioned, and by comparing the advanced situation of 3 electromagnetic waves of A, B, C, determines point of discharge closer to which phase.
It is as above-mentioned technical proposal to further describe:
The GIS device uses ZF4-126M model, and digital oscilloscope uses THS730A model.
It is as above-mentioned technical proposal to further describe:
In the point-by-point generaI investigation of the GIS device, occurs high-frequency signal at the position e, f, g, h, i, a, b, c, d high-frequency signal are not
Obviously, wherein the signal at g is the most obvious.
It is as above-mentioned technical proposal to further describe:
The comparison waveform judges in aeration orifice that the entitled sulfur hexafluoride of Chinese of SF6, is a kind of artificial inert gas of synthesis,
It is mainly used for high pressure insulation of electrical installation and arc quenching protection, wherein period and the amplitude for comparing waveform judge SF6 gas point
The analysis result for solving object is 0.
It is as above-mentioned technical proposal to further describe:
In the Primary Location of the point of discharge, two channels HO of type UHF sensor are used to two coaxial cables of equal length
It is connect with the channel 1 of digital oscilloscope and channel 2, it is ensured that the coaxial cable of equal length maximumlly reduces the measurement of electromagnetic wave
Error.
It is as above-mentioned technical proposal to further describe:
The type UHF sensor passes through the frequency knob for adjusting the voltage-controlled radio-frequency oscillator module of VCO, so that outgoing carrier frequency is most
Between low frequency and highest frequency, and received Partial discharge signal is being observed from the background, determine the bandwidth of the reception frequency of type UHF sensor
Range.
It is as above-mentioned technical proposal to further describe:
The SF6 gas decomposition product is using gas pressure monitoring, the monitoring of gas leakage monitoring, gas humidity and gas chemical analysis
Mode is handled, and for being monitored to SF6 gas characteristic, judges the health status of GIS device.
It is as above-mentioned technical proposal to further describe:
The type UHF sensor is made of disc type electrode, terminal resistance, detection tabs, ground terminal and terminal box, wherein circle
Disc electrode is located at bottom, and detection tabs are used for connecting coaxial cable.
It is as above-mentioned technical proposal to further describe:
In the Primary Location of the point of discharge, type UHF sensor is individually positioned in g, h and g, at f, passes through electromagnetic wave in two groups
Reach the time speed at g, it can be determined that spark location is close to which main pipe connector.
It is as above-mentioned technical proposal to further describe:
In the accurate positioning of the point of discharge, type UHF sensor is individually positioned in A, B and B, C and A, at location of C, passes through three
Mutual leading time point in group between electromagnetic wave, judges point of discharge closer to which phase position.
Beneficial effect
The present invention provides a kind of high frequency partial discharge test methods for GIS device.Have it is following the utility model has the advantages that
(1): this is used for the high frequency partial discharge test method of GIS device by the way of high-frequency test, effectively avoids power train
The corona of system and the interference phenomenon of radio and television radio, and cooperate isometric coaxial cable as connection phenomenon, also into one
The measurement sensitivity of step improved to point of discharge signal, it is ensured that the precision of test process.
(2): this is used for the high frequency partial discharge test method of GIS device by the way of positioning twice, can be to GIS device
Spark location carries out the localization process of descending range, prevents the position inaccurate that may occur when a positioning operation
Phenomenon, so as to fast and safely navigate to point of discharge, facilitate it is subsequent to GIS device carry out relevant operation processing, improve
The accuracy of the high frequency partial discharge test of GIS device.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of the high frequency partial discharge test method for GIS device proposed by the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
As shown in Figure 1, a kind of high frequency partial discharge test method for GIS device, comprising the following steps:
S1: digital oscilloscope and two UHF sensings is arranged according to the demand of high-frequency test in the connection of instrument and the setting of parameter
The operating parameter of device connects the channel RO of type UHF sensor, type UHF sensor is lain in the insulation of the GIS device of main pipe junction
On box；
A, b, c, d, e, f, g, h, i point are attached by the point-by-point generaI investigation of S2:GIS equipment one by one using digital oscilloscope, and right
The signal of these points is generally investigated one by one, and the corresponding signal data in each shop is obtained out of digital oscilloscope；
S3: comparison waveform judges aeration orifice, the signal waveform that obtained digital oscilloscope obtains and experiment simulation metal loosening portion
The signal data comparison of part point of discharge judges whether unanimously, to compare period and the amplitude of waveform, in conjunction with point of SF6 gas decomposition product
Analysis is as a result, judge occur the position that metal parts loosens or suspend point in GIS device；
S4: the Primary Location of point of discharge resets the operating parameter of digital oscilloscope and type UHF sensor, by two of type UHF sensor
The channel HO is respectively connected to the channel 1 and channel 2 of digital oscilloscope by cable, passes through the conduction judgement electric discharge point of electromagnetic wave
It sets；
S5: the accurate positioning of point of discharge, according to the specific location of A, B, C three-phase in GIS device internal structure and main pipe, to electric discharge
Point is further positioned, and by comparing the advanced situation of 3 electromagnetic waves of A, B, C, determines point of discharge closer to which phase.
GIS device uses ZF4-126M model, and digital oscilloscope uses THS730A model.
In the point-by-point generaI investigation of GIS device, occurs high-frequency signal at the position e, f, g, h, i, a, b, c, d high-frequency signal are not
Obviously, wherein the signal at g is the most obvious.
Comparison waveform judges in aeration orifice that the entitled sulfur hexafluoride of Chinese of SF6, is a kind of artificial inert gas of synthesis,
It is mainly used for high pressure insulation of electrical installation and arc quenching protection, wherein period and the amplitude for comparing waveform judge SF6 gas point
The analysis result for solving object is 0.
In the Primary Location of point of discharge, two channels HO of type UHF sensor are used to two coaxial cables of equal length
It is connect with the channel 1 of digital oscilloscope and channel 2, it is ensured that the coaxial cable of equal length maximumlly reduces the measurement of electromagnetic wave
Error.
Type UHF sensor passes through the frequency knob for adjusting the voltage-controlled radio-frequency oscillator module of VCO, so that outgoing carrier frequency is most
Between low frequency and highest frequency, and received Partial discharge signal is being observed from the background, determine the bandwidth of the reception frequency of type UHF sensor
Range.
SF6 gas decomposition product is using gas pressure monitoring, the monitoring of gas leakage monitoring, gas humidity and gas chemical analysis
Mode is handled, and for being monitored to SF6 gas characteristic, judges the health status of GIS device.
Type UHF sensor is made of disc type electrode, terminal resistance, detection tabs, ground terminal and terminal box, wherein circle
Disc electrode is located at bottom, and detection tabs are used for connecting coaxial cable.
In the Primary Location of point of discharge, type UHF sensor is individually positioned in g, h and g, at f, passes through electromagnetic wave in two groups
Reach the time speed at g, it can be determined that spark location is close to which main pipe connector, electromagnetic wave propagation speed
0.3m/ns cooperates the length of GIS device main pipe, can calculate discharge signal point more according to the wave difference value at g, h and g, f
At which point how much positions.
In the accurate positioning of point of discharge, type UHF sensor is individually positioned in A, B and B, C and A, at location of C, passes through three
Mutual leading time point in group between electromagnetic wave judges point of discharge closer to which phase position, for example, if at A phase position
Waveform first reaches prior to the waveform at the B-phase place of setting, then point of discharge is closer to A phase position.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of high frequency partial discharge test method for GIS device, which comprises the following steps:
S1: digital oscilloscope and two UHF sensings is arranged according to the demand of high-frequency test in the connection of instrument and the setting of parameter
The operating parameter of device connects the channel RO of type UHF sensor, type UHF sensor is lain in the insulation of the GIS device of main pipe junction
On box；
A, b, c, d, e, f, g, h, i point are attached by the point-by-point generaI investigation of S2:GIS equipment one by one using digital oscilloscope, and right
The signal of these points is generally investigated one by one, and the corresponding signal data in each shop is obtained out of digital oscilloscope；
S3: comparison waveform judges aeration orifice, the signal waveform that obtained digital oscilloscope obtains and experiment simulation metal loosening portion
The signal data comparison of part point of discharge judges whether unanimously, to compare period and the amplitude of waveform, in conjunction with point of SF6 gas decomposition product
Analysis is as a result, judge occur the position that metal parts loosens or suspend point in GIS device；
S4: the Primary Location of point of discharge resets the operating parameter of digital oscilloscope and type UHF sensor, by two of type UHF sensor
The channel HO is respectively connected to the channel 1 and channel 2 of digital oscilloscope by cable, passes through the conduction judgement electric discharge point of electromagnetic wave
It sets；
S5: the accurate positioning of point of discharge, according to the specific location of A, B, C three-phase in GIS device internal structure and main pipe, to electric discharge
Point is further positioned, and by comparing the advanced situation of 3 electromagnetic waves of A, B, C, determines point of discharge closer to which phase.
2. a kind of high frequency partial discharge test method for GIS device according to claim 1, which is characterized in that the GIS
Equipment uses ZF4-126M model, and digital oscilloscope uses THS730A model.
3. a kind of high frequency partial discharge test method for GIS device according to claim 1, which is characterized in that the GIS
In the point-by-point generaI investigation of equipment, occurs high-frequency signal at the position e, f, g, h, i, a, b, c, d high-frequency signal are unobvious, wherein g
The signal at place is the most obvious.
4. a kind of high frequency partial discharge test method for GIS device according to claim 1, which is characterized in that described right
Judge in aeration orifice than waveform, the entitled sulfur hexafluoride of Chinese of SF6 is a kind of artificial inert gas of synthesis, is mainly used for height
Middle voltage electrical is apparatus insulated and arc quenching protection, wherein period and the amplitude for comparing waveform judge the analysis of SF6 gas decomposition product
It as a result is 0.
5. a kind of high frequency partial discharge test method for GIS device according to claim 1, which is characterized in that described to put
In the Primary Location of electricity point, by two channels HO of type UHF sensor using two coaxial cables of equal length and digital oscillography
The channel 1 of device and channel 2 connect, it is ensured that the coaxial cable of equal length maximumlly reduces the measurement error of electromagnetic wave.
6. a kind of high frequency partial discharge test method for GIS device according to claim 1, which is characterized in that the UHF
Sensor passes through the frequency knob for adjusting the voltage-controlled radio-frequency oscillator module of VCO, so that outgoing carrier frequency is in low-limit frequency and most
Between high-frequency, and received Partial discharge signal is being observed from the background, determine the bandwidth range of the reception frequency of type UHF sensor.
7. a kind of high frequency partial discharge test method for GIS device according to claim 4, which is characterized in that the SF6
Gas decomposition product uses at gas pressure monitoring, the monitoring of gas leakage monitoring, gas humidity and gas chemical analysis mode
Reason, for being monitored to SF6 gas characteristic, judges the health status of GIS device.
8. a kind of high frequency partial discharge test method for GIS device according to claim 1, which is characterized in that the UHF
Sensor is made of disc type electrode, terminal resistance, detection tabs, ground terminal and terminal box, wherein disc type electrode is located at
Bottom, detection tabs are used for connecting coaxial cable.
9. a kind of high frequency partial discharge test method for GIS device according to claim 1, which is characterized in that described to put
In the Primary Location of electricity point, type UHF sensor is individually positioned in g, h and g, at f, is reached at g by electromagnetic wave in two groups
Time speed, it can be determined that spark location is close to which main pipe connector.
10. a kind of high frequency partial discharge test method for GIS device according to claim 1, which is characterized in that described to put
In the accurate positioning of electricity point, type UHF sensor is individually positioned in A, B and B, C and A, at location of C, passes through electromagnetic wave in three groups
Between mutual leading time point, judge point of discharge closer to which phase position.
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| CN201910697418.5A CN110286306A (en) | 2019-07-30 | 2019-07-30 | A kind of high frequency partial discharge test method for GIS device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112824914A (en) * | 2019-11-20 | 2021-05-21 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Rapid detection method for GIS equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553207A (en) * | 2003-12-18 | 2004-12-08 | 西安交通大学 | High-frequency wide-band local discharging on-line monitoring method in gas insulative converting station |
| CN103675623A (en) * | 2013-12-07 | 2014-03-26 | 西安交通大学 | Method and system for detecting partial discharging of GIS under impulse voltage |
| CN204758759U (en) * | 2015-05-11 | 2015-11-11 | 国家电网公司 | A device for measuring gas -insulated combination switch benzvalene form insulator defect |
| CN107643475A (en) * | 2016-07-22 | 2018-01-30 | 常州中兴华达科技有限公司 | A kind of detection method of partial discharge of electrical equipment and its device |
-
2019
- 2019-07-30 CN CN201910697418.5A patent/CN110286306A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553207A (en) * | 2003-12-18 | 2004-12-08 | 西安交通大学 | High-frequency wide-band local discharging on-line monitoring method in gas insulative converting station |
| CN103675623A (en) * | 2013-12-07 | 2014-03-26 | 西安交通大学 | Method and system for detecting partial discharging of GIS under impulse voltage |
| CN204758759U (en) * | 2015-05-11 | 2015-11-11 | 国家电网公司 | A device for measuring gas -insulated combination switch benzvalene form insulator defect |
| CN107643475A (en) * | 2016-07-22 | 2018-01-30 | 常州中兴华达科技有限公司 | A kind of detection method of partial discharge of electrical equipment and its device |
Non-Patent Citations (2)
| Title |
|---|
| 周波等: "特高频及超声波法在GIS设备带电检测中的应用", 《高压电器》 * |
| 李兴旺: "雷电冲击耐压过程中GIS局部放电特高频检测有效性研究", 《高压电器》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112824914A (en) * | 2019-11-20 | 2021-05-21 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Rapid detection method for GIS equipment |
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