CN106569107B - A kind of sulfur hexafluoride concentrates the method for analyzing and judging in conjunction with superfrequency partial discharge - Google Patents

A kind of sulfur hexafluoride concentrates the method for analyzing and judging in conjunction with superfrequency partial discharge Download PDF

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Publication number
CN106569107B
CN106569107B CN201610940320.4A CN201610940320A CN106569107B CN 106569107 B CN106569107 B CN 106569107B CN 201610940320 A CN201610940320 A CN 201610940320A CN 106569107 B CN106569107 B CN 106569107B
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online
discharge
gis
partial discharge
decomposition
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CN201610940320.4A
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Chinese (zh)
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CN106569107A (en
Inventor
林福海
涂湛
周友武
邓永强
稂业员
贾蕗路
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国网江西省电力公司电力科学研究院
国家电网公司
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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
    • G01R31/1218Testing 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 optical methods; using charged particle, e.g. electron, beams or X-rays

Abstract

A kind of sulfur hexafluoride concentrates the method for analyzing and judge with superfrequency ining conjunction with partial discharge, comprising: carries out online concentration to sulfur hexafluoride gas in the GIS device at adjacent multiple intervals and samples;Decomposition product concentrates chromatographic analysis device to carry out on-line chromatograph analysis to the decomposition product of sampling online;When concentrating chromatographic analysis device or online superfrequency partial discharge device monitoring online to decomposition product to questionable signal, the latency shelf depreciation in GIS device is accurately prejudged.The sulfur hexafluoride that the method uses, which is concentrated, analyzes and judge with superfrequency ining conjunction with that partial discharge system includes that the GIS device (1) for filling sulfur hexafluoride gas, GIS device gas take air valve (2), decomposition product to concentrate chromatographic analysis device (3), monitoring data processing online and analyzes (4) and online superfrequency partial discharge device (5) from the background.The present invention is suitable for take sulfur hexafluoride as insulation and the GIS electrical equipment of arc-extinguishing medium, can real-time monitoring GIS equipment partial discharge electric discharge type, discharge position and discharge capacity size.

Description

A kind of sulfur hexafluoride concentrates the method for analyzing and judging in conjunction with superfrequency partial discharge

Technical field

It concentrates chromatography to analyze with online superfrequency partial discharge online the present invention relates to a kind of sulfur hexafluoride decomposer mutually to tie The method for judging GIS device partial discharge is closed, substation's online measuring technique field is belonged to.

Background technique

Increasing with Cubicle Gas-Insulated Switchgear (GIS), the dosage of sulfur hexafluoride gas is also more next It is bigger.The shelf depreciation of GIS device inner part is as one of the defects of gas insulated high voltage electric equipment operation process, not only It will affect the dielectric strength of equipment, will also cause unplanned power failure, and influence power grid security.Therefore, judge GIS equipment partial discharge Detection work it is extremely important.

There are the power equipments of shelf depreciation in GIS substation for power industry, mainly use offline superfrequency, surpass Sound wave live detection, and assist detecting sulfur hexafluoride gas decomposition product, to judge in equipment with the presence or absence of electric discharge; Part substation is mounted with online extra-high video sensor, but is considered in terms of electrical quantity with the presence or absence of partial discharge, is inevitably deposited In the inaccurate situation of unilateral, test, and mutually confirmed without other means.Current detection method is all difficult in GIS device Latency shelf depreciation accurately prejudged, timely and effectively equipment fault could not be strangled in the budding stage, especially also The detection technique of on-line chromatograph analysis is not carried out to sulfur hexafluoride decomposer.

Based on above-mentioned condition, a kind of sulfur hexafluoride decomposer concentrates chromatography and online superfrequency partial discharge to analyze phase online The problem can be well solved in conjunction with the method for judging GIS device partial discharge, by the detection method can by it is adjacent it is relatively close between Every GIS device in sulfur hexafluoride gas carry out concentration sampling, then carry out the on-line chromatograph analysis of decomposition product, and will test knot Fruit combines with online superfrequency partial discharge analysis result, and GIS equipment partial discharge can intuitively be reflected very much by finding a kind of method Electric discharge type, discharge position, discharge capacity size etc..

Summary of the invention

The object of the present invention is to existing judgement GIS equipment partial discharge detection there are aiming at the problem that, the present invention discloses one Kind sulfur hexafluoride concentrates the method for analyzing and judging in conjunction with superfrequency partial discharge.

Technical scheme is as follows, and a kind of sulfur hexafluoride concentrates the side for analyzing and judging in conjunction with superfrequency partial discharge Method, comprising:

Online concentrate is carried out to sulfur hexafluoride gas in the GIS device at adjacent multiple intervals to sample.

Decomposition product concentrates chromatographic analysis device to carry out on-line chromatograph analysis to the decomposition product of sampling online.

When concentrating chromatographic analysis device or online superfrequency partial discharge device monitoring to questionable signal to decomposition product, to GIS Latency shelf depreciation in equipment is accurately prejudged.

The sulfur hexafluoride that the method uses, which is concentrated, analyzes and judges in conjunction with superfrequency that partial discharge system is lithium including filling The GIS device of sulphur gas, GIS device gas take air valve, decomposition product to concentrate chromatographic analysis device, monitoring data processing online And analyze backstage and online superfrequency partial discharge device.GIS device gas takes air valve to fill sulfur hexafluoride gas by pipeline connection GIS device;And by the F of acquisition6S gas sample concentrates chromatographic analysis device to be divided online by Pipeline transport to decomposition product Analysis;Decomposition product concentrates chromatographic analysis device that will analyze result online and send to monitoring data processing and analyze backstage;Setting is being filled In the GIS device of sulfur hexafluoride gas line superfrequency partial discharge device by conducting wire connect monitoring data processing and analysis after Platform;The expert diagnostic system software on monitoring data processing and analysis backstage carries out the latency shelf depreciation in GIS device quasi- Really anticipation, and the electric discharge type of real-time monitoring GIS equipment partial discharge, discharge position, discharge capacity size.

Whether the anticipation the affiliated type of shelf depreciation or electric discharge occurs including the equipment in GIS:

(1) free metal particle discharges: when the signal numerical value that online superfrequency partial discharge device to test goes out is higher than background value, prison When mapping spectrum is tentatively judged as the electric discharge of free metal particle, decomposition product concentrates the SO of chromatographic analysis device monitoring online2、SO2F2 And SOF2It is all larger than 0.5 μ L/L, and contains metal fluoride, then is judged as that free metal particle discharges;

(2) floating potential discharge:

When discharge pulse amplitude stability, the numerical value that online superfrequency partial discharge device to test goes out are larger, electric discharge map is tentatively sentenced When breaking as floating potential discharge, SO that decomposition product concentrates chromatographic analysis device to monitor online2、SO2F2And SOF2It is all larger than 1.0 μ L/L, and SOF2Content ratio SO2F2Greatly, then it is judged as floating potential discharge;

(3) insulating part internal air gap or creeping discharge:

When the discharge pulse amplitude dispersibility that online superfrequency partial discharge device to test goes out is larger, electric discharge map is tentatively judged as When insulating part internal air gap or creeping discharge, decomposition product concentrates the SO of chromatographic analysis device monitoring online2、SO2F2And SOF2? Greater than 0.5 μ L/L, and contain CF4, then it is judged as insulating part internal air gap or creeping discharge;

(4) metal tip is discharged:

When the discharge time interval that online superfrequency partial discharge device to test goes out is uniform, discharge time is more, and map is tentatively sentenced Break for metal tip electric discharge when, decomposition product concentrate online chromatographic analysis device monitor SO2、SO2F2And SOF2It is all larger than 1.0 μ L/L, and SOF2Content ratio SO2F2Greatly, containing metal fluoride, then it is judged as that metal tip is discharged.

The online superfrequency partial discharge device is the online superfrequency partial discharge sensor on GIS device inner tubal wall;It is described It is that sulfur hexafluoride decomposer concentrates analytical chromatograph that decomposition product concentrates chromatographic analysis device online.

The invention has the advantages that the present invention for sulfur hexafluoride decomposer concentrate online chromatography with online it is extra-high The analysis of frequency partial discharge combines the method for judging GIS device partial discharge, can carry out concentration sampling to the sulfur hexafluoride gas in GIS, The on-line chromatograph analysis of decomposition product is carried out again, and will test result and combine with online superfrequency partial discharge analysis result, to GIS Latency shelf depreciation in equipment is accurately prejudged, and timely and effectively strangles equipment fault in the budding stage.

The present invention is suitable for taking sulfur hexafluoride as the GIS electrical equipment to insulate with arc-extinguishing medium, can real-time monitoring GIS device Electric discharge type, discharge position and the discharge capacity size of shelf depreciation.

Detailed description of the invention

Fig. 1 is that sulfur hexafluoride of the present invention concentrates the schematic device for analyzing and judging in conjunction with superfrequency partial discharge;

In figure, 1 is the GIS device for filling sulfur hexafluoride gas;2 be that GIS device gas takes air valve;3 be that decomposition product exists Line concentrates chromatographic analysis device;4 be monitoring data processing and analysis backstage;5 be online superfrequency partial discharge device.

Specific embodiment

With reference to embodiments and compares attached drawing the present invention is described in detail.

As shown in Figure 1, a kind of sulfur hexafluoride of the present embodiment concentrates the method for analyzing and judging in conjunction with superfrequency partial discharge, packet It includes sulfur hexafluoride gas in the GIS device to adjacent multiple intervals and carries out online concentration sampling.

Decomposition product concentrates chromatographic analysis device to carry out on-line chromatograph analysis to the decomposition product of sampling.

When concentrating chromatographic analysis device or online superfrequency partial discharge device monitoring to questionable signal to decomposition product, to GIS Latency shelf depreciation in equipment is accurately prejudged.

A kind of sulfur hexafluoride of the present embodiment concentrates the system for analyzing and judging in conjunction with superfrequency partial discharge lithium including filling The GIS device 1 of sulphur gas, GIS device gas take air valve 2, decomposition product to concentrate chromatographic analysis device 3, monitoring data online Processing and analysis backstage 4, online superfrequency partial discharge device 5.

The GIS device 1 for filling sulfur hexafluoride gas at adjacent multiple intervals takes air valve 2 by gas by GIS device gas It takes out, and these gas samples is concentrated into chromatographic analysis device 3 by the decomposition product on Pipeline transport to monitoring platform online, these F6S gas sample can enter chromatograph according to the program of setting and be analyzed, and decomposition product concentrates chromatographic analysis device 3, online online The data-out port connection monitoring data processing of superfrequency partial discharge device 5 and analysis backstage 4 are monitored, at monitoring data In reason and analysis backstage, it is mounted with to concentrate chromatographic analysis device, online superfrequency partial discharge device analysis number online by decomposition product According to the expert diagnostic system for judging GIS device partial discharge is combined, the latency shelf depreciation in GIS device is carried out accurate pre- The electric discharge type, discharge position, discharge capacity size etc. sentenced, and GIS equipment partial discharge can be monitored in real time.

Online superfrequency partial discharge device is online superfrequency partial discharge sensor in the present embodiment;Decomposition product concentrates color online Spectrum analysis device is that sulfur hexafluoride decomposer concentrates analytical chromatograph.

As shown in Figure 1, it is adjacent multiple in GIS device that installation sulfur hexafluoride decomposer, which concentrates the position of analytical chromatograph, Monitoring platform is concentrated on by probe tube every the sulfur hexafluoride gas in a shared monitoring platform, these intervals, and Chromatograph is being filled in air-conditioned fixed board house;It in monitoring data processing and analyzes on backstage, is mounted with by lithium sulphur content Solution object concentrates chromatogram analysis data, online superfrequency partial discharge analysis data to combine and judge that the expert of GIS device partial discharge examines online Disconnected system, online superfrequency partial discharge sensor therein is on the tube wall in GIS device.

Claims (2)

1. a kind of sulfur hexafluoride concentrates the method for analyzing and judging in conjunction with superfrequency partial discharge, which is characterized in that the method packet It includes: online concentrate being carried out to sulfur hexafluoride gas in the GIS device at adjacent multiple intervals and is sampled;
Decomposition product concentrates chromatographic analysis device to carry out on-line chromatograph analysis to the decomposition product of sampling online;
When concentrating chromatographic analysis device or online superfrequency partial discharge device monitoring online to decomposition product to questionable signal, to GIS Latency shelf depreciation in equipment is accurately prejudged;
Whether the anticipation the affiliated type of shelf depreciation or electric discharge occurs including the equipment in GIS:
(1) free metal particle discharges: when the signal numerical value that online superfrequency partial discharge device to test goes out is higher than background value, monitoring figure When spectrum is tentatively judged as the electric discharge of free metal particle, decomposition product concentrates the SO of chromatographic analysis device monitoring online2、SO2F2With SOF2It is all larger than 0.5 μ L/L, and contains metal fluoride, then is judged as that free metal particle discharges;
(2) floating potential discharge:
When discharge pulse amplitude stability, the numerical value that online superfrequency partial discharge device to test goes out are larger, electric discharge map is tentatively judged as When floating potential discharge, decomposition product concentrates the SO of chromatographic analysis device monitoring online2、SO2F2And SOF21.0 μ L/L are all larger than, And SOF2Content ratio SO2F2Greatly, then it is judged as floating potential discharge;
(3) insulating part internal air gap or creeping discharge:
When the discharge pulse amplitude dispersibility that online superfrequency partial discharge device to test goes out is larger, electric discharge map is tentatively judged as insulation When part internal air gap or creeping discharge, decomposition product concentrates the SO of chromatographic analysis device monitoring online2、SO2F2And SOF2It is all larger than 0.5 μ L/L, and contain CF4, then it is judged as insulating part internal air gap or creeping discharge;
(4) metal tip is discharged:
When the discharge time interval that online superfrequency partial discharge device to test goes out is uniform, discharge time is more, and map is tentatively judged as When metal tip is discharged, decomposition product concentrates the SO of chromatographic analysis device monitoring online2、SO2F2And SOF21.0 μ L/L are all larger than, And SOF2Content ratio SO2F2Greatly, containing metal fluoride, then it is judged as that metal tip is discharged.
2. a kind of sulfur hexafluoride concentrates the method for analyzing and judging in conjunction with superfrequency partial discharge according to claim 1, described Decomposition product concentrates chromatographic analysis device that will analyze result online and send to monitoring data processing and analyze backstage;It is described online extra-high Frequency partial discharge device connects monitoring data processing and analysis backstage by conducting wire;The expert diagnosis on monitoring data processing and analysis backstage System software accurately prejudges the latency shelf depreciation in GIS device, and real-time monitoring GIS equipment partial discharge Electric discharge type, discharge position and discharge capacity size.
CN201610940320.4A 2016-11-02 2016-11-02 A kind of sulfur hexafluoride concentrates the method for analyzing and judging in conjunction with superfrequency partial discharge CN106569107B (en)

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Citations (4)

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Publication number Priority date Publication date Assignee Title
US5642038A (en) * 1995-08-28 1997-06-24 Korea Electrotechnology Research Institute Method of detecting partial discharge using frequency spectrum analyzer
CN101598762A (en) * 2009-06-24 2009-12-09 河南平高电气股份有限公司 A kind of sensor and device for monitoring local discharge of gas insulated metal enclosed switch
CN102103183A (en) * 2010-12-01 2011-06-22 西安交通大学 Partial discharge measurement device under impulse voltage on site and signal processing method thereof
CN105388406A (en) * 2015-12-29 2016-03-09 武汉大学 Gas insulated electric equipment partial discharge multi-source joint detection method

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Publication number Priority date Publication date Assignee Title
US6809523B1 (en) * 1998-10-16 2004-10-26 The Detroit Edison Company On-line detection of partial discharge in electrical power systems

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5642038A (en) * 1995-08-28 1997-06-24 Korea Electrotechnology Research Institute Method of detecting partial discharge using frequency spectrum analyzer
CN101598762A (en) * 2009-06-24 2009-12-09 河南平高电气股份有限公司 A kind of sensor and device for monitoring local discharge of gas insulated metal enclosed switch
CN102103183A (en) * 2010-12-01 2011-06-22 西安交通大学 Partial discharge measurement device under impulse voltage on site and signal processing method thereof
CN105388406A (en) * 2015-12-29 2016-03-09 武汉大学 Gas insulated electric equipment partial discharge multi-source joint detection method

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