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Analysis and operation and maintenance method for grounding state of 500kV transmission line tower

A grounding state and transmission line technology, applied in the configuration of grounding lines, measuring electricity, measuring electrical variables, etc., can solve the problem of not ensuring the lightning protection safety of base towers, and achieve the effect of improving efficiency and scientificity and ensuring normality.

Active Publication Date: 2019-06-14
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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Problems solved by technology

[0003] In the early stage of 500kV transmission line project design, the lightning protection check in the design is only a safety check of the comprehensive lightning protection grounding performance of the entire project line, and cannot ensure the lightning protection safety of each base tower in operation and maintenance. However, there is an urgent need for 500kV power transmission at present. Risk rating of tower grounding status in line operation and maintenance, to analyze the risk of tower grounding status, and realize operation and maintenance on this basis

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  • Analysis and operation and maintenance method for grounding state of 500kV transmission line tower
  • Analysis and operation and maintenance method for grounding state of 500kV transmission line tower
  • Analysis and operation and maintenance method for grounding state of 500kV transmission line tower

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[0038] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0039] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" a...

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Abstract

The invention relates to an analysis and operation and maintenance method for a grounding state of a 500kV transmission line tower. The method comprises the following steps of computing a maximum grounding resistance limit value allowed by a 500kV tower of a 500kV power transmission line section according to lightning operation data in a region where the 500kV power transmission line section is located; comparing a tower grounding resistance value obtained by actual measurement with the grounding resistance limit value to determine the grounding state of the 500kV tower; and carrying out differential operation and maintenance on the 500kV tower according to the grounding state. The grounding state of the 500kV tower is determined according to the requirements for the lightning protection grounding characteristics of the line in the operation and maintenance work of a power grid, the operation and maintenance of the 500kV transmission line tower can be realized, the support can be provided for making other operation and maintenance work programs of grounding of a 500kV transmission line, and the efficiency and the scientificity of operation and maintenance work of the line are improved, so that the normal and effective operation and maintenance work of an electric power system is ensured.

Description

technical field [0001] This application relates to the field of 500kV transmission lines, in particular to an analysis, operation and maintenance method for the grounding state of towers of 500kV transmission lines. Background technique [0002] In order to transmit the electric energy from the power plant to a distant place, the voltage must be raised to become high-voltage electricity, and then the voltage is lowered as needed near the user. This work of raising and lowering the voltage is done by the substation. In my country, common AC power transmission and transformation voltage levels include 1000kV, 750kV, 500kV, 330kV, 220kV, 110kV, 66kV, 35kV, 20kV, and 10kV. The 500kV substation is generally a hub substation. Its main functions and functions in the power system are: 1. Collect the main lines from several power plants, and connect with several key points in the power grid, and also connect with the power grid of the next level of voltage; 2. As a large 1. The con...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G7/22G01R31/02
Inventor 彭红刚王牧浪卞佳音许继葵何泽斌陈建强张珏伦国钦孟秋实单鲁平郭磊
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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