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Insulator pollution degree evaluation method based on meteorological data statistics

A technology of meteorological data and insulators, applied in the field of insulator pollution evaluation based on meteorological data statistics, can solve the problems of high cost, low efficiency, and long time consumption

Active Publication Date: 2017-01-04
WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST +1
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Problems solved by technology

At present, the main method of obtaining the salt density value of insulators is manual sampling measurement, which not only requires offline measurement experiments under power outage conditions, but also takes a long time, high cost, and low efficiency, which plays a role in maintenance strategies based on equipment status limited role

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  • Insulator pollution degree evaluation method based on meteorological data statistics
  • Insulator pollution degree evaluation method based on meteorological data statistics
  • Insulator pollution degree evaluation method based on meteorological data statistics

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0015] The insulator pollution evaluation method based on meteorological data statistics proposed by the present invention, such as figure 1 , which includes the following steps:

[0016] Step S1, meteorological data statistics: count the meteorological data at the tower of the transmission line to be evaluated from the initial time to the evaluation time in units of days;

[0017] Step S2, division of pollution process: According to the rainfall information in the meteorological data obtained in step S1, the dynamic pollution process of insulators is divided into the process of pollution accumulation and rainfall cleaning alternately, as figure 2 shown;

[0018] Step S3, Calculation of Salt Density Change: Based on the classic pollution accumulation and rainfall cleaning model, considering the impact of meteorological parameters on the insul...

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Abstract

The invention relates to an insulator pollution degree evaluation method based on meteorological data statistics. The method is characterized by comprising the steps of 1, meteorological data statistics; 2, pollution accumulation process division; 3, salt deposit density change calculation; 4, pollution grade evaluation. The feasible and effective pollution degree evaluation method is provided for an electric transmission line insulator which lacks an online pollution monitoring device and is located in a high-pollution area, and the method is of great practical significance in anti-pollution flashover measure formulation and implementation based on the insulator pollution degree.

Description

technical field [0001] The invention relates to the technical field of power grid disaster prevention and mitigation, in particular to a method for evaluating the pollution degree of insulators based on meteorological data statistics. Background technique [0002] After the insulators of overhead transmission lines are polluted by solid, liquid and gaseous conductive substances under natural conditions, their insulation performance will be significantly reduced under humid weather conditions such as fog, dew, drizzle, melting ice and snow, and may be under operating voltage. A pollution flashover accident occurred. With the development of industry and the aggravation of pollution, pollution flashover accidents occur frequently. According to incomplete statistics, in the winter of 2001, rain, snow, and fog in North China and Northeast China caused pollution flashover accidents in 238 66-500kV transmission lines and 34 substations; The foggy weather caused seven flashover ac...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 王海涛吴大伟谷山强陶汉涛赵淳卢恩泽郭钧天张磊陈玥何君
Owner WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
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