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GIS (Gas Insulated Switchgear) experiment device of steep-front impulse voltage field

A technology of impulse voltage and test equipment, which is applied in the field of high-voltage electricity, can solve the problems of large circuit, inconvenient transportation, complex circuit, etc., and achieve the effect of reducing test cost, convenient on-site installation, and compact structure

Inactive Publication Date: 2013-09-04
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of steep front impulse voltage generating device is bulky and inconvenient to transport, and it is not easy to conduct GIS insulation characteristic test on site
The traditional device is composed of the impulse voltage generator in the air + overhead line + bushing + GIS busbar. The circuit is complex, the structure is huge, the equipment cost is high, and the rising edge of the output fast transient overvoltage waveform is not steep enough to meet the requirements.
At the same time, the circuit of the generating device is huge, the stray inductance is large, and the leading edge of the generated impulse voltage is relatively slow, which cannot meet the requirements of the on-site GIS insulation characteristic detection

Method used

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  • GIS (Gas Insulated Switchgear) experiment device of steep-front impulse voltage field
  • GIS (Gas Insulated Switchgear) experiment device of steep-front impulse voltage field

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] The relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0025] At the same time, it should be understood that, for the convenience of d...

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Abstract

The invention discloses a GIS (Gas Insulated Switchgear) experiment device of a steep-front impulse voltage field. The device comprises an oil-immersed impulse voltage generator, an intermediate energy storage peak oil line, a sharpening clearance unit, a connecting bus and a transmission line, wherein the oil-immersed impulse voltage generator is connected with the first port of the sharpening clearance unit through the intermediate energy storage peak oil line, and the second port of the sharpening clearance unit is connected with the first port of the transmission line through the connecting bus; the second port of the transmission line is connected with a gas insulated switchgear to supply a steep-front impulse voltage generated by the GIS experiment device of the steep-front impulse voltage field to the gas insulated switchgear; and the level height difference between the first port and the second port of the transmission line can be adjusted. The GIS experiment device adopts an integral and compact structural style to be convenient to transport, effectively avoids external disturbance and reduces the experimental cost. Meanwhile, the height difference of the GIS experiment device of the steep-front impulse voltage field and GIS equipment can be adjusted, and the GIS experiment device is very convenient for field installation.

Description

technical field [0001] The invention relates to the field of high voltage electricity, in particular to a field GIS test device for steep front impulse voltage. Background technique [0002] Compared with lightning waves, the steep leading edge impulse voltage is more sensitive to detecting internal defects of GIS (Gas Insulated Switchgear, gas insulated switchgear). In the prior art, lightning impulse or oscillating impulse voltage is often used when testing the insulation characteristics of equipment on site. However, when lightning impulse tests are used, problems such as lightning wave head exceeding the standard range and low lightning generation efficiency often occur. , and the on-site test installation workload is huge, which limits the use of on-site impact tests; and the use of oscillating impulse voltage tests also presents the problem of a huge on-site workload. [0003] In the prior art, a common impulse voltage generator is usually used to generate a sharp-edg...

Claims

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Application Information

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IPC IPC(8): G01R31/12
Inventor 张乔根陈维江张璐时卫东殷禹张翠霞文韬陈纲亮沈海滨苏宁
Owner STATE GRID CORP OF CHINA
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