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Anti-lightning evaluation method and device of high-voltage overhead power transmission line

A technology for power transmission lines and high-voltage overhead, which is used in measuring devices, measuring electrical variables, and testing dielectric strength, etc., can solve the problems of inaccurate lightning channel wave impedance, and achieve the effect of balancing safety and economy, and accurately evaluating

Active Publication Date: 2012-10-03
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD +1
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Problems solved by technology

[0009] Based on this, it is necessary to provide a lightning protection evaluation method and device for high-voltage overhead transmission lines in view of the above-mentioned problem that the calculation of lightning channel wave impedance is not accurate enough and has certain limitations

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  • Anti-lightning evaluation method and device of high-voltage overhead power transmission line
  • Anti-lightning evaluation method and device of high-voltage overhead power transmission line
  • Anti-lightning evaluation method and device of high-voltage overhead power transmission line

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Embodiment Construction

[0022] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] see figure 2 As shown, a lightning protection evaluation method for high-voltage overhead transmission lines includes the following steps:

[0024] Step S101, acquiring the lightning current amplitude. There are many methods for obtaining the amplitude of the lightning current, all of which are known technologies, and will not be repeated here.

[0025] Step S102, according to the lightning current amplitude obtained in step S101, and using the following formula to calculate the lightning channel wave impedance value:

[0026] Z = 2300 e - I 5.44 + 600 e - I 168.7 ...

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Abstract

The invention provides an anti-lightning evaluation method and an anti-lightning device of a high-voltage overhead power transmission line. The method comprises the steps of: obtaining a thunder current amplitude, calculating a lightning channel wave impedance value Z by the following formula according to the thunder current amplitude, wherein I is the thunder current amplitude; and determining a counterattack anti-lightning level of the line according to the lightning channel wave impedance value so as to further determine insulation configuration of the power transmission line. The device disclosed by the invention comprises a thunder current amplitude obtaining module, a lightning channel wave impedance value calculating module and an insulation configuration determining module. By the anti-lightning evaluation method and the anti-lightening evaluation device of the high-voltage overhead power transmission line disclosed by the invention, the lightning channel wave impedance value corresponding to any thunder current amplitude can be precisely calculated so as to more accurately evaluate the counterattack anti-lightning level of the high-voltage overhead power transmission line and determine proper insulation configuration, so that the security and the economical efficiency of the power transmission line are better balanced.

Description

technical field [0001] The invention relates to the field of lightning protection protection for transmission lines, in particular to a lightning protection evaluation method for high-voltage overhead transmission lines and a lightning protection evaluation device for high-voltage overhead transmission lines. Background technique [0002] The lightning protection design of transmission lines is very important to the safety and economy of transmission lines, so it is necessary to conduct lightning protection assessment for transmission lines. Among them, the lightning channel wave impedance is an important parameter in the lightning strike simulation model of the transmission line. The accurate value of this value is helpful to more accurately evaluate the lightning protection performance of the high-voltage overhead transmission line. [0003] The importance of the wave impedance of the lightning channel lies in: if the value of the wave impedance of the lightning channel is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R27/02
Inventor 龚有军潘春平金晓华姚文峰汪晶毅蔡汉生施春华陈鹏廖民传陈喜鹏郭晓武马辉黎景辉
Owner CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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