Partial discharge collecting and positioning method, device and system

A technology of partial discharge and positioning method, applied in radio wave measurement systems, positioning, measuring devices, etc., can solve the problems of inaccurate positioning of partial discharge and low sampling accuracy, and achieve the effect of accurate positioning and high sampling accuracy

Inactive Publication Date: 2020-05-19
HENAN PINGGAO ELECTRIC +2
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a method, device and system for collecting and locating partial discharges, which a

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  • Partial discharge collecting and positioning method, device and system
  • Partial discharge collecting and positioning method, device and system
  • Partial discharge collecting and positioning method, device and system

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] System embodiment:

[0030] This implementation case provides a partial discharge collection and location system, the system includes a plurality of partial discharge location determination devices to respectively collect signals and judge the location of partial discharges for different sampling locations. In order to reduce interference, a certain distance is kept between each sampling location to ensure that when partial discharge (hereinafter referred to as partial discharge) occurs, the generated magnetic field will not interfere with and misjudgment the partial discharge collection and positioning devices at other sampling locations . If possible, more collection locations can be properly arranged to achieve rapid and rough positionin...

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Abstract

The invention belongs to the technical field of partial discharge of electrical equipment, and particularly relates to a partial discharge collecting and positioning method, device and system. The method comprises the following steps: firstly, setting more than two sampling positions on power equipment, and acquiring more than one detection signal at each sampling position; judging whether partialdischarge occurs or not according to the detection signal; if the partial discharge is judged to occur, extracting a head wave signal according to the detection signal when the partial discharge occurs; extracting the frequency domain information of the head wave signal and determining the frequency corresponding to the maximum semaphore in the frequency domain information of the head wave signal; and performing synchronous collection at each collection position; and resampling by taking X times of the frequency as a detection signal corresponding to the sampling frequency so that the partialdischarge position is positioned according to the resampled signal. The frequency corresponding to the maximum semaphore in the frequency domain information of the head wave signal during partial discharge is used for resampling, the sampling precision is high and the partial discharge position is accurately positioned.

Description

technical field [0001] The invention belongs to the technical field of partial discharge of electrical equipment, and in particular relates to a partial discharge collection and positioning method, device and system Background technique [0002] With the development of social economy and the improvement of people's lives, the dependence on electricity is getting higher and higher. Closed gas combined electrical appliances are widely used in power grids because of their small footprint and good insulation performance. At the same time, the requirements for the stability of the power system are getting higher and higher. Due to the closed structure of the closed gas combination electrical appliances, once an accident occurs, it will be very serious. Whether the insulation is good or not is related to the stability of the power grid. [0003] Partial discharge is generally considered to be the precursor of insulation accidents, and the appearance of partial discharge generally...

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Application Information

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IPC IPC(8): G01R31/12G01S5/00G01S5/06G01S5/22
CPCG01R31/1209G01R31/1254G01S5/00G01S5/06G01S5/22
Inventor 陈富国彭跃辉宋选锋张旭尹军华寇新民王岩妹张嘉马慧珍赵营刘丹丹魏稼鹏武艳蒙孙园园
Owner HENAN PINGGAO ELECTRIC
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