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Method for diagnosing plasma generated by insulator end discharging under atmospheric condition

A technology of plasma and atmospheric conditions, applied in the direction of plasma, electrical components, etc., can solve the problems of unfixed position and unfavorable diagnosis

Inactive Publication Date: 2015-02-25
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The plasma formed by partial arc discharge along the surface of the insulator also has the same problem, and the position is not fixed, which is even more unfavorable for diagnosis

Method used

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  • Method for diagnosing plasma generated by insulator end discharging under atmospheric condition
  • Method for diagnosing plasma generated by insulator end discharging under atmospheric condition
  • Method for diagnosing plasma generated by insulator end discharging under atmospheric condition

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Embodiment

[0049] In the specific implementation of the present invention, a certain FXBW-66 / 100 rod-shaped suspension composite insulator is taken as an example for illustration. Such as figure 1 As shown, the technical parameters of the insulator are the structure height of 250mm, the minimum arc distance of 180mm, and the minimum nominal creepage distance of 380mm. The method of expanding the insulator into a flat plate model according to the creepage distance: the length is the creepage distance, and the width is half of the perimeter of the shed at each creepage distance. Therefore, the sample can be approximately equivalent to a rectangular rubber plate, the length of which is 380mm for the creepage distance and 251.2mm for the half of the circumference of the largest shed. The plate material is the same silicon rubber as that of the test insulator. The schematic diagram of the sample model is as figure 1 As shown, an iron disc with a diameter of 30mm is selected as the electrod...

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Abstract

The invention relates to the technical field of high-voltage electric power equipment detection, in particular to a method for diagnosing plasma generated by insulator end discharging under the atmospheric condition. According to the method, a slab model of an insulator is utilized, the insulator operation mode is simulated, the plasma generated by gas discharging is made to be controllable in parameter and fixed in position, and conditions are created for actual diagnosing. According to the method, the insulator is unfolded according to the creepage distance to form the slab model, so that the plasma generated by gas discharging is made to be controllable in parameter and fixed in position, and the conditions are created for actual diagnosing. The method is suitable for being applied and popularized in the technical fields of high-voltage electric power equipment detection.

Description

technical field [0001] The invention relates to the technical field of high-voltage power equipment detection, in particular to a method for diagnosing plasma generated by discharge at the end of an insulator under atmospheric conditions. Background technique [0002] Plasma diagnosis is mainly to diagnose and analyze the physical and chemical changes inside the plasma through various optical, magnetic and electrical means. The purpose is to determine the state and characteristics of charged particles in the plasma, such as electrons and ions. The density and temperature of the plasma, the spatial and temporal distribution of current and electromagnetic field, various transport, fluctuation, radiation and instability and other motion states, so as to deduce various characteristic parameters of the plasma. Due to the uncertainty of the plasma state formed in the insulator flashover process, it is difficult for practical diagnosis. The plasma formed by corona discharge has un...

Claims

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Application Information

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IPC IPC(8): H05H1/00
Inventor 胡大伟苑舜苑经纬李学斌鲁旭臣韩洪刚赵义松姜常胜金鑫于在明
Owner STATE GRID CORP OF CHINA
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