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 PDF

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Publication number
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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China
Prior art keywords
gis
frequency
simulation device
transformer
voltage
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CN201410454112.4A
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Chinese (zh)
Inventor
朱太云
杨道文
叶剑涛
程登峰
王贻平
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Anhui Electric Power Co Ltd
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Anhui Electric Power Co Ltd
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Application filed by State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Anhui Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201410454112.4A priority Critical patent/CN104166080A/en
Publication of CN104166080A publication Critical patent/CN104166080A/en
Priority to PCT/CN2014/001173 priority patent/WO2016033713A1/en
Pending legal-status Critical Current

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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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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Relating To Insulation (AREA)

Abstract

本发明了一种非工频工况GIS设备局部放电缺陷模拟装置，其特征是设置变频电源模块，其电源信号输入端与电网三相380V交流供电电源通过电缆相连，以变频电源模块的输出端提供频率和幅值可调的交流电压；升压变压器安装于GIS结构模拟装置的壳体中，升压变压器的低压绕组通过第一绝缘子和第二绝缘子引出在GIS结构模拟装置的壳体的外部，并通过电缆与变频电源模块的输出端相连接，升压变压器的高压输出端与设置在GIS设备结构模拟装置的壳体中的母线相连接，缺陷模型的一端与母线相连接，另一端接地。本发明用于实现非工频电压条件下GIS设备缺陷模型模拟，获取非工频电压条件下GIS设备缺陷模型局部放电信号特征。

The invention discloses a device for simulating partial discharge defects of GIS equipment under non-power frequency working conditions. Provide AC voltage with adjustable frequency and amplitude; the step-up transformer is installed in the casing of the GIS structure simulation device, and the low-voltage winding of the step-up transformer is led out of the casing of the GIS structure simulation device through the first insulator and the second insulator , and connected to the output end of the variable frequency power supply module through a cable, the high voltage output end of the step-up transformer is connected to the bus bar set in the shell of the GIS equipment structure simulation device, one end of the defect model is connected to the bus bar, and the other end is grounded . The invention is used to realize the simulation of GIS equipment defect model under the non-power frequency voltage condition, and obtain the partial discharge signal characteristics of the GIS equipment defect model under the non-power frequency voltage condition.

Description

A kind of non-power frequency operating mode GIS apparatus local discharge defects simulation device
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)

1.一种非工频工况GIS设备局部放电缺陷模拟装置，其特征是：设置变频电源模块，所述变频电源模块的电源信号输入端与电网提供的三相380V交流供电电源通过电缆相连，以所述变频电源模块的输出端提供频率和幅值可调的交流电压；升压变压器(1)安装于GIS结构模拟装置的壳体(2)中，所述升压变压器(1)的低压绕组通过第一绝缘子(3)和第二绝缘子(4)引出在GIS结构模拟装置的壳体(2)的外部，并通过电缆与所述变频电源模块的输出端相连接，所述升压变压器(1)的高压输出端与设置在GIS设备结构模拟装置的壳体(2)中的母线(5)相连接，缺陷模型(6)的一端与所述母线(5)相连接，另一端接地；所述缺陷模型(6)为任意一种GIS结构模拟装置的缺陷模型。1. A non-power frequency working condition GIS equipment partial discharge defect simulation device is characterized in that: a variable frequency power supply module is set, and the power signal input terminal of the variable frequency power supply module is connected with the three-phase 380V AC power supply provided by the power grid through cables, The output terminal of the variable frequency power supply module provides an AC voltage with adjustable frequency and amplitude; the step-up transformer (1) is installed in the housing (2) of the GIS structure simulation device, and the low voltage of the step-up transformer (1) The winding is drawn out of the casing (2) of the GIS structure simulation device through the first insulator (3) and the second insulator (4), and is connected to the output end of the variable frequency power supply module through a cable, and the step-up transformer The high-voltage output terminal of (1) is connected with the busbar (5) arranged in the housing (2) of the GIS equipment structure simulation device, and one end of the defect model (6) is connected with the busbar (5), and the other end is grounded ; The defect model (6) is a defect model of any GIS structure simulation device. 2.根据权利要求1所述的非工频工况GIS设备局部放电缺陷模拟装置，其特征是：由所述变频电源模块提供的频率和幅值可调的交流电压的频率范围为30Hz～300Hz，幅值为0～350V；所述升压变压器(1)的工作频率范围为30Hz-300Hz。2. The device for simulating partial discharge defects of GIS equipment under non-power frequency working conditions according to claim 1, wherein the frequency range of the AC voltage with adjustable frequency and amplitude provided by the variable frequency power supply module is 30 Hz to 300 Hz , the amplitude is 0-350V; the operating frequency range of the step-up transformer (1) is 30Hz-300Hz.
CN201410454112.4A 2014-09-05 2014-09-05 GIS device partial discharge defect simulation device used on non-power-frequency working condition Pending CN104166080A (en)

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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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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 GIS basin 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 device for simulating overhead line faults caused by insulator breakage defects
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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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 GIS basin insulator partial discharge defect diagnosis method and system based on quasi-high frequency withstand voltage
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 device for simulating overhead line faults caused by insulator breakage defects
CN109752623B (en) * 2018-12-07 2024-07-12 国网浙江省电力有限公司金华供电公司 Device for simulating overhead line faults caused by insulator breakage defects
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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Application publication date: 20141126