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gis partial discharge on-line monitoring calibrator and its configuration verification method

A verification method and partial discharge technology, applied in the direction of measuring devices, instruments, measuring electrical variables, etc., can solve problems such as the lack of consistent and effective evaluation methods

Active Publication Date: 2015-09-02
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] So far, for the on-site calibration of UHF detection devices, apart from CIGRE recommending its own criteria, there is still no consistent and effective evaluation method in the world, and this aspect is still in a blank stage in China.

Method used

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  • gis partial discharge on-line monitoring calibrator and its configuration verification method
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  • gis partial discharge on-line monitoring calibrator and its configuration verification method

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Embodiment Construction

[0049] The GIS partial discharge on-line monitoring calibrator (hereinafter referred to as the calibrator) described in the present invention is suitable for realizing the match on the 110kV and 220kV GIS (fully enclosed gas-insulated combined switchgear) in laboratory conditions and field operation Check the UHF detection device. The partial discharge UHF detection device is a device for on-line monitoring of GIS partial discharge based on the UHF method. Among them, UHF refers to 300MHz~3GHz.

[0050] The calibrator of the present invention is mainly provided with a pulse signal source and a transmitting antenna, and its detection principle is to inject a signal into the GIS cavity through the pulse signal source, and then detect the signal with the partial discharge UHF detection device to be tested, and then the Determine the sensitivity of the device under test.

[0051] A preferred technical parameter set for the pulse signal source of the calibrator in the present inv...

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Abstract

The invention relates to a global information system (GIS) partial discharge on-line monitoring calibration instrument and a configuration authentication method thereof. The calibration instrument is provided with a pulse signal source and a transmitting antenna. When the pulse signal source replacing a high-voltage conductor spike model injects signals of a simulation partial discharge source through an external sensor as the transmitting antenna into a GIS cavity, the calibration instrument carries out checking on sensitivity of a partial discharge ultra high frequency (UHF) detecting device in the process that the partial discharge UHF detecting device detects the signals on line on the basis of an ultrahigh frequency method. The configuration authentication method includes the steps of testing time domain waveform and spectrum characteristics of a UHF signal model radiated by a typical discharge source inside a GIS, providing technical parameters of the pulse signal source, injecting the pulse signals into the high-voltage conductor spike model on an entity GIS platform, injecting pulse signals into the GIS cavity through an internal sensor and the external sensor, and then carrying out equivalent checking.

Description

technical field [0001] The invention relates to the field of GIS partial discharge, in particular to a GIS partial discharge on-line monitoring calibrator and a configuration verification method thereof. Background technique [0002] GIS (totally enclosed gas insulated switchgear) has the advantages of small footprint, little influence from external environmental conditions, and high reliability, and is widely used in urban power grids in my country. At present, the GIS equipment put into operation in my country in the early stage has entered a period of frequent failures; and the high speed of power grid development has also caused GIS equipment manufacturers to overload production, and it is difficult to effectively guarantee the conditions for on-site installation and construction, which greatly increases the output of newly put into operation GIS equipment. Probability and risk of failure. There is a huge contradiction between this and the increasing requirements of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12G01R35/00
Inventor 都泓蔚殷立军孙阳盛张华常鹏华月申聂鹏晨于盛楠宋涛张合召张浩杰贺鑫张思平
Owner STATE GRID CORP OF CHINA
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