Partial discharge detection device and method

A technology for partial discharge detection and partial discharge analysis, which is applied in the direction of using optical methods for testing, testing dielectric strength, etc., and can solve the problem of difficulty in accurately determining the location of partial discharges.

Pending Publication Date: 2019-12-24
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most of the partial discharge detection methods obtain the partial discharge signal from the outside of the electrical equipment. Due to the complexity of some electrical equipment (such as transformers), it is difficult to accurately determine the location of the partial discharge.

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  • Partial discharge detection device and method

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Embodiment Construction

[0028] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Preferred embodiments of the application are shown in the accompanying drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the application more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of ill...

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Abstract

The invention relates to a partial discharge detection device and method. The partial discharge detection device comprises a plurality of partial discharge detection sensors and a partial discharge analyzer, wherein the partial discharge detection sensors are arranged inside a plurality of ring main units respectively and are used for collecting optical signals inside the ring main units; each ring main unit is correspondingly provided with one partial discharge detection sensor; and the partial discharge analyzer is connected with all the partial discharge detection sensors and is used for analyzing partial discharge conditions inside all the ring main units in combination with the optical signals collected by all the partial discharge detection sensors. Through the partial discharge detection device and method, on the one hand, the situation that it is difficult to accurately judge a partial discharge occurrence position due to the complexity inside electrical equipment can be avoided; and on the other hand, simultaneous online detection of the partial discharge conditions of the multiple ring main units also can be realized, and the working efficiency of detection and maintenance is improved.

Description

technical field [0001] The invention relates to the technical field of photoelectric detection, in particular to a partial discharge detection device and method. Background technique [0002] Partial discharge is one of the important parameters to characterize the insulation state of electrical equipment. Therefore, accurate detection of partial discharge of electrical equipment is the key to realize on-line monitoring and status evaluation of electrical equipment insulation status. Partial discharge of electrical equipment will not only generate electric pulses, but also be accompanied by physical phenomena such as electromagnetic radiation, ultrasonic waves, and light effects, and cause local overheating. At present, the methods for detecting partial discharge of electrical equipment mainly include pulse current method, ultra-high frequency method, chemical detection method and optical measurement method. The partial discharge pulse current method is currently the only qu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1218
Inventor 谢睿葛馨远朱俊鹏胡日鹏王浩屹
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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