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Internal discharge detection method of sulfur hexafluoride gas insulation equipment

A technology for sulfur hexafluoride gas and detection methods, which is applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of judging methods of unformed characteristic decomposition products or warning content values, so as to improve maintenance efficiency and increase Detection method, the effect of improving reliability

Inactive Publication Date: 2011-03-30
EAST CHINA ELECTRIC POWER TEST & RES INST
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Problems solved by technology

For SF caused by defects such as internal discharge and partial discharge of medium and low energy 6 There is no breakthrough in the detection of gas decomposition products, and there is no method for judging characteristic decomposition products or warning content values

Method used

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  • Internal discharge detection method of sulfur hexafluoride gas insulation equipment
  • Internal discharge detection method of sulfur hexafluoride gas insulation equipment
  • Internal discharge detection method of sulfur hexafluoride gas insulation equipment

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Embodiment Construction

[0025] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] The invention discloses a method for detecting internal discharge of sulfur hexafluoride gas insulated equipment based on the detection of trace chemical decomposition products, which can judge whether internal discharge or partial discharge occurs inside the GIS according to the decomposition products of sulfur hexafluoride; , Medium and low energy internal discharges and partial discharges can all be detected by the invention.

[0027] see image 3 , the internal discharge detection method of sulfur hexafluoride gas insulated equipment of the present invention comprises the following steps:

[0028] A. Provide sulfur hexafluoride SF in the insulation equipment to be tested 6 gas samples;

[0029] B. After the sample is injected, a thermal conductivity detector (TCD) is used to detect the conventional components in the gas sample; ...

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Abstract

The invention discloses an internal discharge detection method of sulfur hexafluoride gas insulation equipment, comprising the following steps: A, providing a SF6 (sulfur hexafluoride) gas sample in the insulation equipment to be detected; B, after the sample is introduced in, detecting conventional ingredients in the gas sample by a TCD (thermal conductivity detector); C, After the TCD detects that SF6 almost flows out, inputting the sample into a FPD (flame photometry detector); D, detecting a trace product decomposed by SF6 via the FPD; and E, according to the content and the variation condition of the tract product, judging whether the SF6 gas insulation equipment has local discharge defects. In the invention, the internal insulation condition of electric equipment can be judged according to the chemical decomposer of SF6 gas. In the invention, a detection means for the internal insulation situation of GIS (Gas Insulated Switchgear) equipment is added, equipment station information is enriched, the internal discharge faults of GIS can be found as quickly as possible,equipment operation reliability is improved, a fault air chamber can be positioned quickly and accurately after discharge faults burst in GIS, and maintenance efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of internal state evaluation of sulfur hexafluoride gas insulation equipment and detection of trace gas components, and relates to a discharge detection method, in particular to an internal discharge detection method of sulfur hexafluoride gas insulation equipment. Background technique [0002] SF 6 As a gas with excellent insulation and arc extinguishing properties, it is widely used in electrical equipment. Charge SF 6 Gas electrical equipment (such as GIS equipment) has a high internal electric field strength, and it is easy to reduce the insulation performance due to internal tiny defects, cause internal discharge, and even insulation breakdown, resulting in equipment failure. [0003] Due to various discharges, overheating or insulation breakdown, SF 6 The gas is decomposed to produce different decomposition products, so by analyzing the SF in the equipment 6 The decomposed products can judge the in...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02G01N30/66G01N30/68
Inventor 高凯彭伟徐红
Owner EAST CHINA ELECTRIC POWER TEST & RES INST
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