Device and method for partial discharge test of gas insulated combined electric appliance under impact voltage

A technology of gas insulation combination and impulse voltage, which is applied in the direction of testing dielectric strength, etc.

Active Publication Date: 2014-02-26
STATE GRID CORP OF CHINA +5
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  • Abstract
  • Description
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Problems solved by technology

Since there is no standard and recognized test method for partial discharge detection under impulse voltage, the construction of GIS partial discharge test device under impulse voltage and the study

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  • Device and method for partial discharge test of gas insulated combined electric appliance under impact voltage
  • Device and method for partial discharge test of gas insulated combined electric appliance under impact voltage

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing, further elaborate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0022] Such as figure 1 shown. The partial discharge test device for gas insulated composite electrical appliances under impulse voltage mainly includes a 200kV impulse voltage generator, a 110kV GIS test section, a pulse current method measurement system, a UHF method measurement system and an ultrasonic method measurement system. The impulse voltage generator 1 is respectively connected to the voltage divider 2 and the...

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Abstract

The invention discloses a device and a method for a partial discharge test of a gas insulated combined electric appliance under impact voltage. The device comprises an impact voltage generator, wherein the impact voltage generator is respectively connected with a voltage divider and a gas insulated combined electric appliance, the gas insulated combined electric appliance comprises a sleeve, one end of the sleeve is connected with the impact voltage generator, the other end of the sleeve is connected with a high voltage conductor, the high voltage conductor is arranged in a chamber, at least one box type insulator is arranged in the chamber, the chamber is divided into multiple defect test chamber units, a current sensor is connected with the chamber, each defect test chamber unit is internally provided with an extra high frequency sensor, an ultrasonic sensor is arranged at an outer surface of the chamber, and the current sensor, the extra high frequency sensors and the ultrasonic sensor are respectively connected with a partial discharge signal processing device. The device can realize detection and result analysis on GIS partial discharge under field-exerted impact voltage.

Description

technical field [0001] The invention relates to a gas-insulated combined electrical appliance, in particular to a partial discharge test device and method for a gas-insulated combined electrical appliance under impulse voltage. Background technique [0002] Gas insulated switchgear (Gas insulated switchgear, GIS) is one of the important components of UHV power grid. After optimized design, cable terminals, inlet and outlet bushings, etc. are installed in their respective sealed rooms, and finally assembled in a whole shell filled with SF6 as the insulating medium. [0003] Defects inside GIS that affect the performance of insulating media mainly include: serious installation errors, poor contact between conductors, high-voltage conductor protrusions, fixed particles, insulator defects, steam, etc. [0004] With the increase of my country's power grid voltage, more and more attention has been paid to the on-site impact test of GIS (gas insulated combined electrical equipment...

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Application Information

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IPC IPC(8): G01R31/12
Inventor 杨景刚贾勇勇赵科吴昊张星高山周志成李炜冯英和彦淼何洁王圆圆卢军陈敏
Owner STATE GRID CORP OF CHINA
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