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Line arrester installation site selection method

A line arrester and installation point technology, applied in the direction of overhead line/cable equipment, etc., can solve the problems of random selection of line arrester installation points and different quality of personnel, so as to reduce the randomness, improve the quality of point selection, reduce The effect of labor intensity

Active Publication Date: 2017-09-29
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no uniform specification for the selection of installation points for line arresters. The selection of points mainly depends on the technicians of the team, and the quality of personnel is different, which leads to the randomness of the installation points of line arresters.

Method used

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  • Line arrester installation site selection method
  • Line arrester installation site selection method
  • Line arrester installation site selection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as figure 1 As shown, the implementation steps of the method for selecting points for installation of line arresters in this embodiment include:

[0020] 1) Determine the tower coordinates of the line, and import the tower coordinates of the line into the map;

[0021] 2) Determine the installation point to be selected on the map;

[0022] 3) For each candidate installation point, obtain the corresponding evaluation value of each lightning damage factor. Each lightning damage factor includes the span L1, the historical lightning strike point L2, the river or valley L3, the metal mining area L4, the slope L5, and the high Difference L6, altitude L7, lightning density L8, L9 within 2 kilometers of the substation incoming line, and summing up the values ​​of each lightning damage factor to obtain the weighting factor and K;

[0023] 4) According to the weight factor and K, select the installation point to be selected as the final installation point of the arrester.

[0024] I...

Embodiment 2

[0036] This embodiment is basically the same as the first embodiment, and the main difference is that the implementation of step 4) is different.

[0037] In this embodiment, the detailed steps of step 4) include: sorting all the candidate installation points according to the weight factor and K, and selecting at least one weight factor and the candidate installation point in the best direction of K from the ranking result as the final Point of installation of lightning arrester.

Embodiment 3

[0039] This embodiment is basically the same as the first embodiment, and the main difference is that the implementation of step 4) is different.

[0040] In this embodiment, the detailed steps of step 4) include:

[0041] S1) Preliminary screening is performed according to whether the assessment value of the lightning damage factor specified in the assessment value of each lightning damage factor meets the standard (for example, not 0) as the preliminary screening condition; in this embodiment, the specific selection is to select L9 Whether it meets the standard is used as a preliminary screening condition for preliminary screening. The evaluation value of L9 within 2 kilometers of the substation incoming line is 1 (within 2 kilometers of the substation incoming line of the to-be-selected installation point) as an absolute condition for the selection;

[0042] S2) According to the preliminary screening result, the candidate installation point is selected as the final lightning arres...

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Abstract

The invention discloses a line arrester installation site selection method that comprises the following steps of: 1) determining the tower coordinates of a line and importing the tower coordinates of the line into a map; 2) determining candidate installation sites on the map; 3) for respective candidate installation sites, acquiring the evaluated values of corresponding respective lightning damage factors, wherein the respective lightning damage factors include a span length L1, a historical lightning stroke point L2, a river or valley L3, a metal mining area L4, a slope L5, an elevation difference L6, altitude L7, ground stroke density L8, transformer station inlet line within 2 km L9, and summing the values of respective lightning damage factors to obtain a weight factor summation K; 4) selecting a candidate installation site as a final arrester installation site according to the weight factor summation K. The method can not only improve the quality of site selection and reduce randomness due to different quality of personnel, but also can greatly reduce the labor intensity of operators.

Description

Technical field [0001] The invention belongs to the technical field of electric power engineering, and in particular relates to a method for installation and selection of line arresters. Background technique [0002] Overhead transmission lines have long transmission distances and occupy wide passages. They are generally distributed in open areas in cities, rural areas or mountainous areas. From the perspective of safety and insulation, the height of transmission line towers is generally above 20m, and most transmission lines are operating in exposed environments. Line towers are often the tallest structures nearby. In areas with heavy lightning, line towers are struck by lightning. The probability is higher. After the transmission line is struck by lightning, it may cause a power outage, seriously affecting the production and life of residents. For this reason, power supply departments often choose to install lightning arresters and other auxiliary lightning protection facilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/04
CPCH02G1/04
Inventor 巢亚锋赵世华王峰王成段建家岳一石黄福勇
Owner STATE GRID CORP OF CHINA
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