A Representation Method of Regional Pollution Degree of Transmission Lines

A transmission line, pollution degree technology, applied in the direction of testing dielectric strength, material impedance, etc., can solve the problems of flashover prevention measures, errors, pollution flashover, etc., to achieve the effect of strengthening safe and stable operation and reducing flashover accidents

Active Publication Date: 2017-10-03
STATE GRID CORP OF CHINA +3
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  • Abstract
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  • Claims
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Problems solved by technology

[0002] In addition to the two basic pollution accumulation forms of conventional solid slow pollution and highly conductive liquid pollution fast pollution, in inland areas, due to human activities (such as straw burning, firecrackers, etc.) or natural factors (mountain fires, Acid rain, etc.) caused by high conductivity, high humidity weather conditions, on the basis of solid fouling superimposed rapid fouling process, more likely to cause pollution flashover
Under such circumstances, if the results of the conventional slow fouling process and the effect of cleaning fog are still used, large errors will be caused, resulting in failure to take preventive measures for possible flashovers in time, threatening the safety and stable operation of the power grid

Method used

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  • A Representation Method of Regional Pollution Degree of Transmission Lines
  • A Representation Method of Regional Pollution Degree of Transmission Lines
  • A Representation Method of Regional Pollution Degree of Transmission Lines

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with embodiment. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0030] A method for characterizing pollution degree of a transmission line area, characterized in that: considering and quantifying the influence of conductivity fog weather on flashover voltage; using the same flashover voltage as an equivalent condition, converting the conductivity fog effect into an equivalent salt density value , using the converted comprehensive salt density value as the main basis for the division of polluted areas.

[0031] Specifically include the following steps:

[0032] 1) Under the condition of clean fog, the flashover voltage decreases with the increase of salt density, but the downward trend gradually slows down, and the relationship between flashover voltage and salt density is...

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Abstract

The invention discloses a method for characterizing the pollution degree of transmission line area, which can more comprehensively consider the influence of environmental factors on the pollution and flashover characteristics of the insulator surface; The impact of the effect, and the result of its action combined with the original surface salt density into an equivalent salt density, which is used as the basis for the division of pollution levels. The division method of the present invention considers the more and more electrical conductivity foggy weather in the near future as an environmental feature, and arranges the insulation configuration in this way, which can effectively reduce flashover accidents caused by sudden bad weather, and strengthen the safe and stable operation of the power grid.

Description

technical field [0001] The invention relates to a method for characterizing the pollution level of a transmission line area, which belongs to the technical field of high-voltage external insulation. Background technique [0002] In addition to the two basic forms of pollution, the conventional solid slow pollution accumulation and the highly conductive liquid pollution rapid accumulation, in inland areas, due to human activities (such as straw burning, setting off firecrackers, etc.) or natural factors (mountain fires, The high conductivity and high humidity weather conditions caused by acid rain, etc., superimpose the rapid fouling process on the basis of solid fouling, which is more likely to cause pollution flashover. Under such circumstances, if the results of the conventional slow fouling process and cleaning fog are still used, large errors will be caused, resulting in the inability to take preventive measures against possible flashovers in time, threatening the safety...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12G01N27/02
Inventor 高嵩王凯琳周志成赵晨龙陈杰张龙路永玲梁伟
Owner STATE GRID CORP OF CHINA
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