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Partial discharge detection system

A partial discharge detection and partial discharge technology, which is applied in the direction of testing the dielectric strength, etc., can solve the problems of cable damage, partial discharge detection system cannot carry out withstand voltage test, etc., and achieve the effect of avoiding damage

Inactive Publication Date: 2016-04-13
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0005] The main purpose of the present invention is to provide a partial discharge detection system to solve the problems in the related art that the partial discharge detection system uses DC voltage to damage the cable and the partial discharge detection system cannot perform withstand voltage tests

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Embodiment Construction

[0019] 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. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0020] In order to enable those skilled in the art to better understand the present invention, the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the present invention Examples, but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall belong to the protection scope of the present invention.

[0021] It should be noted that the terms "first" and "second" in the description and claims of the present...

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Abstract

The invention discloses a partial discharge detection system. The partial discharge detection system comprises a high-voltage generation device which is connected with a tested cable and used to excite the tested cable to generate damped oscillating waves, a fault detection device which is connected with the high-voltage generation device and used to perform partial discharge detection on the tested cable. The system solves problems in related technology that a partial discharge detection system uses direct current which damages cables, and a partial discharge detection system cannot perform a withstand voltage test at the same time, so as to prevent damages on cable insulation caused by space charge accumulated on defect positions of the tested cable under DC voltage, and the withstand voltage test is realized to be carried out in the partial discharge detection system at the same time.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a partial discharge detection system. Background technique [0002] With the rapid development of power grid technology, cross-linked polyethylene cables (XLPE for short) have good electrical and thermal properties, simple structure, short manufacturing cycle, high working temperature tolerance, no oil, easy laying, safe and reliable power supply, It is beneficial to beautify the city, so it is widely used in various voltage levels of the power system. However, there are often air gaps and harmful impurities in the insulation structure of XLPE cables due to the difficulty of processing technology or the impurity of raw materials, or there are gaps or semi-conductive shielding layers between the insulation and the semi-conductive shield due to process reasons. The body protrudes toward the insulating layer, and partial discharges are easily generated at these air gaps and impurity ti...

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Application Information

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IPC IPC(8): G01R31/12
Inventor 任志刚郭鑫宇刘若溪程序任健聪齐伟强王文山陶诗洋
Owner STATE GRID CORP OF CHINA
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