Gas-insulated substation metal particle detection method

A technology of gas insulation and metal particles, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve problems such as GIS equipment breakdown and GIS insulation damage

Active Publication Date: 2020-09-15
西安和其光电科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, when using this method for detection, if there are many metal particles in the GIS, the detection process will cause the breakdown of the GIS equipment and cause insulation damage to the GIS.

Method used

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  • Gas-insulated substation metal particle detection method

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Embodiment Construction

[0040] In order to make the purpose, technical solution and advantages of the present application clearer, the method for detecting metal particles in a gas-insulated substation of the present application will be further described in detail through the following embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

[0041] The serial numbers assigned to components in this document, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "connection" mentioned in this application all include direct and indirect connection (connection) unless otherwise specified. In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal"...

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Abstract

The invention relates to a gas insulated substation metal particle detection method. The method is used for detecting metal particles of a gas insulated substation. The gas insulated substation comprises a first bus, a second bus and a first circuit breaker connected between the first bus and the second bus, wherein the first bus and the second bus are arranged in parallel. The method comprises the following steps: performing partial discharge detection on the gas insulated substation to obtain a partial discharge signal before operation; charging the first bus and the second bus; operating the first circuit breaker, and performing partial discharge detection on the gas insulated substation within a preset duration after operating the first circuit breaker to obtain a partial discharge signal after operation; and determining whether metal particles exist in the gas insulated substation or not according to the partial discharge signal before operation and the partial discharge signal after operation. The method provided by the invention does not damage the insulating property of the gas insulated substation in the process of detecting the metal particles, and is high in practicability.

Description

technical field [0001] The present application relates to the field of electric equipment, in particular to a method for detecting metal particles in a gas-insulated substation. Background technique [0002] Gas Insulated Substation (GIS) is a high-voltage power distribution device composed of circuit breakers, busbars, disconnectors, voltage transformers, current transformers, lightning arresters, bushings and other high-voltage electrical appliances. With the advantages of small footprint, light weight, good insulation performance and no environmental interference, GIS has been more and more widely used. With the wide application of GIS, the importance of its safe operation to maintain the stability of the power grid is becoming more and more obvious. [0003] Statistical results show that metal particle defects are the main cause of final insulation failure of GIS. During the production, assembly and operation of GIS, the generation of metal particles is inevitable, suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1254
Inventor 汲胜昌贾云飞赵晋飞熊庆
Owner 西安和其光电科技股份有限公司
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