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gis and its optimization method for integrated grounded UHF partial discharge sensor

A high-frequency station, sensor technology, applied in the field of electric power

Active Publication Date: 2018-02-23
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides an optimization method for a gas-insulated substation GIS and its internal integrated grounding type UHF partial discharge sensor, to at least solve the problem of how to realize the overvoltage grounding protection design of the metal coupling electrode of the sensor in the prior art. the solution to the problem

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  • gis and its optimization method for integrated grounded UHF partial discharge sensor
  • gis and its optimization method for integrated grounded UHF partial discharge sensor
  • gis and its optimization method for integrated grounded UHF partial discharge sensor

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Embodiment Construction

[0020] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0021] In this embodiment, a gas insulated substation GIS is provided, figure 1 is a schematic diagram of a gas insulated substation GIS according to an embodiment of the present invention, such as figure 1 As shown, the gas insulated substation GIS includes: an integrated grounding type UHF partial discharge sensor, which is located inside the GIS, and the metal coupling electrode of the integrated grounding type UHF partial discharge sensor is connected with the shell of the GIS to make the metal coupling The electrodes are connected directly to case ground.

[0022] Through the gas insulated substation GIS, the metal coupling electrode is directly connected to the shell of the GIS to achieve the...

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Abstract

The invention discloses a GIS and an optimization method for an integrated grounding UHF partial discharge sensor. The GIS of a gas-insulated substation includes: an integrated grounding UHF partial discharge sensor located inside the GIS, and an integrated grounding UHF partial discharge sensor. The metal coupling electrode of the sensor is connected to the housing of the GIS, so that the metal coupling electrode is directly connected to the shell ground. The invention solves the problem in the prior art that no effective solution has been proposed for how to realize the overvoltage grounding protection design of the metal coupling electrode of the sensor, realizes direct grounding of the metal property, zero grounding impedance, and does not affect partial discharge detection Reliable grounding effect is achieved under the premise of high sensitivity.

Description

technical field [0001] The invention relates to the field of electric power, in particular to an optimization method of a GIS and its internal integrated grounding type UHF partial discharge sensor. Background technique [0002] The coupling electrode of the integrated grounding type UHF partial discharge sensor is made of metal material. After being installed inside the epoxy material, it directly extends into the inner gas chamber of the gas insulated substation (GIS for short). If the coupling electrode is suspended or If the grounding impedance is large, according to the principle of the capacitive voltage divider, the power frequency voltage of tens of volts or even thousands of volts will be divided on the metal coupling electrode of the sensor. Moreover, in the case of lightning overvoltage and operating overvoltage, the overvoltage level here will be higher. Therefore, the overvoltage grounding protection design of the metal coupling electrode of the sensor must be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12
Inventor 段大鹏王立永黄成军曹佳楣王维马婧珺任志刚陶诗洋
Owner STATE GRID CORP OF CHINA