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Three-dimensional evaluation method for lightning protection performance of power transmission lines based on lightning strike density statistics

A transmission line and lightning density technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems of uneconomical, high economic cost, large-scale and general use waste, etc., to achieve low cost and meet lightning protection requirements. Effects of Retrofit and Accurate Lightning Protection Performance Evaluation

Inactive Publication Date: 2011-03-23
EAST CHINA ELECTRIC POWER TEST & RES INST
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Problems solved by technology

[0006] In the field of practical application, there are already many methods to improve the lightning protection performance of transmission lines. Although these methods can play a good role, due to the high economic cost, large-scale and widespread use will cause serious waste and are extremely uneconomical.

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  • Three-dimensional evaluation method for lightning protection performance of power transmission lines based on lightning strike density statistics
  • Three-dimensional evaluation method for lightning protection performance of power transmission lines based on lightning strike density statistics
  • Three-dimensional evaluation method for lightning protection performance of power transmission lines based on lightning strike density statistics

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Embodiment Construction

[0021] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0022] Please refer to figure 1 , figure 1 Shown is a flow chart of a three-dimensional evaluation method for lightning protection performance of transmission lines based on lightning density statistics in a preferred embodiment of the present invention. The present invention proposes a three-dimensional evaluation method for lightning protection performance of transmission lines based on lightning density statistics, comprising the following steps:

[0023] Step S100: Conducting statistics on the density of lightning strikes on the ground;

[0024] Step S200: Calculating the lightning protection performance of the transmission line;

[0025] Step S300: Carrying out investment economic analysis of line reconstruction;

[0026] Step S400: Combining the lightning density, lightning protection per...

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Abstract

The invention provides a three-dimensional evaluation method for lightning protection performance of power transmission lines based on lightning strike density statistics, which comprises the following steps: carrying out the lightning strike density statistics on ground; performing lightning protection performance calculation on the power transmission lines; conducting investment economic analysis on the line reconstruction; combining the lightning strike density, the lightning protection performance with the investment conditions of the different line reconstruction for each section to perform priority ranking of the reconstruction; and finally forming a strategy for the lightening protection reconstruction of the power transmission line. In the three-dimensional evaluation method for the lightning protection performance of the power transmission lines based on the lightning strike density statistics provided by the invention, the lighting protection performance of the power transmission lines can be exactly evaluated, and the requirements on the reconstruction of the lightning protection on the lines with the different voltage classes of power grid enterprises to can be met.

Description

technical field [0001] The invention relates to the field of lightning protection of transmission lines, and in particular to a three-dimensional evaluation method for lightning protection performance of transmission lines based on lightning density statistics. Background technique [0002] In recent years, with the continuous enrichment of operation experience and the improvement of design level, the operation reliability of transmission lines has been greatly improved. On the one hand, the operating overvoltage of the power transmission system has been limited to a relatively low level, and line flashover faults caused by operating overvoltage rarely occur; on the other hand, good results have been achieved in external insulation work in recent years, and pollution The lightning control work has been greatly promoted, and the AC withstand voltage level of the line has been steadily improved. Under such circumstances, the flashover trip caused by lightning overvoltage has g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 赵文彬顾承昱钱之银
Owner EAST CHINA ELECTRIC POWER TEST & RES INST
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