CN104166080A - GIS device partial discharge defect simulation device used on non-power-frequency working condition - Google Patents
GIS device partial discharge defect simulation device used on non-power-frequency working condition Download PDFInfo
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- CN104166080A CN104166080A CN201410454112.4A CN201410454112A CN104166080A CN 104166080 A CN104166080 A CN 104166080A CN 201410454112 A CN201410454112 A CN 201410454112A CN 104166080 A CN104166080 A CN 104166080A
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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
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Abstract
The invention provides a GIS device partial discharge defect simulation device used on a non-power-frequency working condition. The GIS device partial discharge defect simulation device is characterized by being provided with a variable-frequency power module, a boosting transformer and a defect model, wherein the power supply signal input end of the variable-frequency power module is connected with a three-phase 380V AC power supply of a power grid through a cable, and the output end of the variable-frequency power module supplies an alternating voltage with adjustable frequency and an adjustable amplitude value; the boosting transformer is mounted in a shell of a GIS structure simulation device; a low-voltage winding of the boosting transformer is led outside the shell of the GIS structure simulation device through a first insulator and a second insulator and connected with the output end of the variable-frequency power module through a cable; the high-voltage output end of the boosting transformer is connected with a bus arranged in the shell of the GIS structure simulation device; one end of the defect model is connected with the bus, and the other end of the defect model is grounded. The GIS device partial discharge defect simulation device is used for achieving model simulation of defects of a GIS device on a non-power-frequency voltage condition and obtaining partial discharge signal features of the GIS device defect model on the non-power-frequency voltage condition.
Description
Technical field
The invention belongs to gas insulated combined electrical equipment (being called for short GIS) ultrasonic Partial Discharge Detecting Technology field, particularly relate to a kind of device for the simulation of the non-power frequency operating mode of gas insulated combined electrical equipment shelf depreciation, for realizing the simulation of GIS defect model local discharge characteristic under non-power-frequency voltage condition.
Background technology
The Cubicle Gas-Insulated Switchgear that the SF6 of take is insulating medium (Gas Insulated Switchgear-GIS) also claim gas insulated metal enclosed swit chgear.Compare with conventional electrical appliance equipment, the advantage such as GIS has more that floor area is little, compact conformation, Electro Magnetic Compatibility are good, safe and reliable to operation, its application in electric system is more and more extensive.Carry out GIS apparatus local discharge and detect for timely grasp device interior defect condition, realize state evaluation and the risk assessment of equipment, the repair based on condition of component of realizing GIS equipment is significant.As a kind of conventional detection method for local discharge, ultrasound wave Partial Discharge Detecting Technology, owing to can avoiding on-the-spot electromagnetic interference (EMI), plays an important role in the Partial Discharge Detection of GIS equipment.In order to obtain various defect model shelf depreciation ultrasonic signal features, researchist has set up various gas insulated combined electrical equipment defects simulation devices, and its typical structure forms as shown in Figure 1.With pressure regulator, be output as duplex frequency boostering transformer power supply, duplex frequency boostering transformer High voltage output is applied in the defect model being connected on bus, and defect model is arranged in GIS structural simulation device.Duplex frequency boostering transformer can, independently outside GIS device structure analogue means, also can be placed in the housing of GIS structural simulation device after miniaturization together with GIS structural simulation device sets.
In order to improve the quality of GIS equipment, guarantee that " zero " defect puts into operation, the Partial Discharge Detection of in up-to-date 18 great anti-accident measures of electrical network of the < < of State Grid Corporation of China (revised edition) > >, GIS equipment check being tested in withstand voltage process has proposed clear and definite requirement.
In the on-the-spot check process of the test for GIS equipment, because being adopts series resonant equipment to produce the required high voltage of test, therefore trial voltage is non-power frequency, different from the electric voltage frequency of normal operation, now GIS equipment is under non-power-frequency voltage condition, due to the voltage dependence of local discharge signal feature, its discharge signal feature is more than relevant with defect type, also relevant with the electric voltage frequency on GIS equipment.But in prior art, defects simulation device as shown in Figure 1 cannot be realized non-power frequency operating mode GIS defects simulation.
Summary of the invention
In order to realize GIS equipment deficiency modeling under non-power-frequency voltage condition, obtain GIS equipment deficiency model local discharge signal feature under non-power-frequency voltage condition, the invention provides a kind of non-power frequency operating mode GIS apparatus local discharge defects simulation device.
The present invention is that technical solution problem adopts following technical scheme:
The design feature of the non-power frequency operating mode of the present invention GIS apparatus local discharge defects simulation device is: variable-frequency power sources module is set, the three-phase 380V communication power supply that the power supply signal input end of described variable-frequency power sources module provides with electrical network is connected by cable, with the output terminal of described variable-frequency power sources module, provides frequency and the adjustable alternating voltage of amplitude; Step-up transformer is installed in the housing of GIS structural simulation device, the low pressure winding of described step-up transformer is drawn the outside at the housing of GIS structural simulation device by the first insulator and the second insulator, and be connected with the output terminal of described variable-frequency power sources module by cable, the high-voltage output end of described step-up transformer is connected with the bus being arranged in the housing of GIS device structure analogue means, one end of defect model is connected with described bus, other end ground connection; Described defect model is the defect model of any one GIS structural simulation device.
The design feature of the non-power frequency operating mode of the present invention GIS apparatus local discharge defects simulation device is also: the frequency range of the alternating voltage that the frequency being provided by described variable-frequency power sources module and amplitude are adjustable is 30Hz～300Hz, and amplitude is 0～350V; The operating frequency range of described step-up transformer is 30Hz-300Hz.
Compared with the prior art, the useful technique effect of the present invention is embodied in:
The present invention utilizes variable-frequency power sources to power for step-up transformer, by changing the output voltage frequency of variable-frequency power sources, thereby change step-up transformer output voltage frequency, reach to change and be applied to the electric voltage frequency in defect model, thereby realize non-power frequency Work condition analogue in GIS equipment check process of the test, the local discharge signal feature of obtaining defect model under the non-power frequency working condition of GIS equipment for laboratory provides the foundation, for the judgement of carrying out defect type according to local discharge signal feature in On-Site Testing process provides foundation.
Accompanying drawing explanation
Fig. 1 is that in prior art, conventional GIS equipment deficiency analogue means forms block scheme;
Fig. 2 is block scheme of the present invention;
Fig. 3 is GIS structural simulation device profile schematic diagram;
Fig. 4 is GIS structural simulation device inner structure schematic diagram;
Fig. 5 is the schematic diagram that the present invention is used for obtaining shelf depreciation ultrasonic signal feature under veining defect model 60Hz voltage conditions.
Number in the figure: 1 step-up transformer, 2 housings, 3 first insulators, 4 second insulators, 5 buses, 6 defect model, 7 leading portion threeway tubular housings, 8 back segment threeway tubular housings, 9 disc insulators, 10 end caps, 11 sonacs.
Embodiment
Referring to Fig. 2, in the present embodiment, the version of non-power frequency operating mode GIS apparatus local discharge defects simulation device is: variable-frequency power sources module is set, the three-phase 380V communication power supply that the power supply signal input end of described variable-frequency power sources module provides with electrical network is connected by cable, with the output terminal of described variable-frequency power sources module, provides frequency and the adjustable alternating voltage of amplitude; Step-up transformer 1 is installed in the housing 2 of GIS structural simulation device, the low pressure winding of described step-up transformer 1 is drawn the outside at the housing 2 of GIS structural simulation device by the first insulator 3 and the second insulator 4, and be connected with the output terminal of described variable-frequency power sources module by cable, the high-voltage output end of described step-up transformer 1 is connected with the bus 5 being arranged in the housing 2 of GIS device structure analogue means, one end of defect model 6 is connected with described bus 5, other end ground connection; Described defect model 6 is the defect model of any one GIS structural simulation device.
In concrete enforcement, the frequency range of the alternating voltage that the frequency being provided by variable-frequency power sources module and amplitude are adjustable is 30Hz～300Hz, and amplitude is 0～350V; The operating frequency range of described step-up transformer 1 is 30Hz-300Hz.
Defect model is artificial a kind of discharging model of manufacturing in order to simulate actual GIS device interior defect, is a kind of prior art of this area.Conventional defect model has free metal particle defects model, veining defect model, pollution severity of insulators defect model etc.The present invention is applied to the electric voltage frequency in defect model by adjustment, realizes GIS equipment deficiency shelf depreciation simulation under non-power frequency working condition.
Fig. 3 and Figure 4 shows that a kind of embodiment of GIS structural simulation device that should be in the present invention, as shown in Figure 3 and Figure 4, the housing 2 of GIS structural simulation device is comprised of leading portion threeway tubular housing 7 and 8 docking of back segment threeway tubular housing, on two threeway tubular housings, divide and be provided with inflation inlet and rain glass, the interface of two threeway tubular housings is isolated by disc insulator 9, and adopts flange face sealing.Other end face of leading portion threeway tubular housing 7 and back segment threeway tubular housing 8 seals by end cap 10, and the first insulator 3 and the second insulator 4 are separately positioned on the sidepiece end cap of leading portion threeway tubular housing 7.The diameter of leading portion threeway tubular housing 7 and back segment threeway tubular housing 8 is chosen according to actual 110kV GIS bus bar canister diameter, and step-up transformer High voltage output voltage is up to 110kV, and the diameter of bus 5 is chosen according to actual 110kV GIS bus diameter.
Referring to Fig. 5, be to adopt the present invention to obtain the embodiment of burr discharge defect model Processing of Partial Discharge Ultrasonic Signals feature under 60Hz voltage conditions.Sonac 11 is arranged on the shell 2 of GIS structural simulation device, and the output of sonac is connected to the input end of ultrasonic partial discharge detector by signal cable.In order to guarantee the compactedness of contact, between sonac and shell 2, scribble couplant, defect model 6 is burr discharge defect model.
Experimentation: regulate the output voltage frequency of variable-frequency power sources module to 60Hz, the output voltage of the variable-frequency power sources module that then slowly raises, until detecting defect model, ultrasound partial discharge detector discharges, then keep variable-frequency power sources module output voltage constant, shelf depreciation ultrasonic signal defect model 6 being produced by ultrasonic Partial discharge detector detects, and can obtain burr discharge defect model ultrasound partial discharge signal characteristic under 60Hz voltage conditions.
Claims (2)
1. a non-power frequency operating mode GIS apparatus local discharge defects simulation device, it is characterized in that: variable-frequency power sources module is set, the three-phase 380V communication power supply that the power supply signal input end of described variable-frequency power sources module provides with electrical network is connected by cable, with the output terminal of described variable-frequency power sources module, provides frequency and the adjustable alternating voltage of amplitude; Step-up transformer (1) is installed in the housing (2) of GIS structural simulation device, the low pressure winding of described step-up transformer (1) is drawn the outside at the housing (2) of GIS structural simulation device by the first insulator (3) and the second insulator (4), and be connected with the output terminal of described variable-frequency power sources module by cable, the high-voltage output end of described step-up transformer (1) is connected with the bus (5) being arranged in the housing (2) of GIS device structure analogue means, one end of defect model (6) is connected with described bus (5), other end ground connection; Described defect model (6) is the defect model of any one GIS structural simulation device.
2. non-power frequency operating mode GIS apparatus local discharge defects simulation device according to claim 1, is characterized in that: the frequency range of the alternating voltage that the frequency being provided by described variable-frequency power sources module and amplitude are adjustable is 30Hz～300Hz, and amplitude is 0～350V; The operating frequency range of described step-up transformer (1) is 30Hz-300Hz.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410454112.4A CN104166080A (en) | 2014-09-05 | 2014-09-05 | GIS device partial discharge defect simulation device used on non-power-frequency working condition |
| PCT/CN2014/001173 WO2016033713A1 (en) | 2014-09-05 | 2014-12-25 | Non-line frequency operation mode gis device partial discharge defect simulation apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410454112.4A CN104166080A (en) | 2014-09-05 | 2014-09-05 | GIS device partial discharge defect simulation device used on non-power-frequency working condition |
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| CN104166080A true CN104166080A (en) | 2014-11-26 |
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| CN201410454112.4A Pending CN104166080A (en) | 2014-09-05 | 2014-09-05 | GIS device partial discharge defect simulation device used on non-power-frequency working condition |
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| WO (1) | WO2016033713A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016033713A1 (en) * | 2014-09-05 | 2016-03-10 | 国家电网公司 | Non-line frequency operation mode gis device partial discharge defect simulation apparatus |
| CN106291296A (en) * | 2016-09-29 | 2017-01-04 | 国家电网公司 | A kind of partial discharge of transformer defects simulation device and method |
| CN107248343A (en) * | 2017-06-15 | 2017-10-13 | 杭州易休特科技有限公司 | A kind of distribution net equipment partial discharge failure actual training device |
| CN109298298A (en) * | 2018-11-23 | 2019-02-01 | 中国电力科学研究院有限公司 | A kind of GIS disc insulator shelf depreciation defect diagnostic method and system based on quasi- high frequency pressure resistance |
| CN109752623A (en) * | 2018-12-07 | 2019-05-14 | 国网浙江省电力有限公司金华供电公司 | A kind of device causing overhead transmission line failure for the sub- open defect of analog insulation |
| CN115718053A (en) * | 2022-11-19 | 2023-02-28 | 沈阳工业大学 | Particle discharge experiment platform foreign matter release device and GIL test system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016033713A1 (en) * | 2014-09-05 | 2016-03-10 | 国家电网公司 | Non-line frequency operation mode gis device partial discharge defect simulation apparatus |
| CN106291296A (en) * | 2016-09-29 | 2017-01-04 | 国家电网公司 | A kind of partial discharge of transformer defects simulation device and method |
| CN106291296B (en) * | 2016-09-29 | 2018-10-26 | 国家电网公司 | A kind of partial discharge of transformer defects simulation device and method |
| CN107248343A (en) * | 2017-06-15 | 2017-10-13 | 杭州易休特科技有限公司 | A kind of distribution net equipment partial discharge failure actual training device |
| CN109298298A (en) * | 2018-11-23 | 2019-02-01 | 中国电力科学研究院有限公司 | A kind of GIS disc insulator shelf depreciation defect diagnostic method and system based on quasi- high frequency pressure resistance |
| CN109298298B (en) * | 2018-11-23 | 2023-02-28 | 中国电力科学研究院有限公司 | GIS basin-type insulator partial discharge defect diagnosis method and system based on quasi-high frequency withstand voltage |
| CN109752623A (en) * | 2018-12-07 | 2019-05-14 | 国网浙江省电力有限公司金华供电公司 | A kind of device causing overhead transmission line failure for the sub- open defect of analog insulation |
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| CN115718053A (en) * | 2022-11-19 | 2023-02-28 | 沈阳工业大学 | Particle discharge experiment platform foreign matter release device and GIL test system |
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