A lightning protection evaluation system for a wind power plant

Abstract

The invention relates to a lightning protection evaluation system for a wind power plant. In order to overcome the defect that the existing lightning protection test detection cannot well reflect theeffectiveness and safety of the lightning protection effect of the wind power plant lightning protection device, the system mainly comprises five modules of a parameter input module, a lightning protection modeling module, a lightning stroke characteristic simulation module, a post-lightning-stroke overvoltage characteristic simulation evaluation module and an insulation optimization and evaluation report generation module. The method comprises the following steps of firstly, establishing a model of a terrain, a fan, a line, a tower, a lightning arrester and a grounding system of the wind power plant, simulating the lightning stroke characteristic of the wind power plant on the basis, and simulating the overvoltage characteristic of the wind power plant after lightning stroke to complete the systematic evaluation of the lightning protection effect of the wind power plant. According to the present invention, the wind power plant lightning protection effect can be systematically and completely evaluated, the safety and reliability of the wind power plant are improved, the equipment damage accidents caused by lightning stroke are reduced, the generating capacity of the wind power plant is improved, and the economic income of the wind power plant is increased.

Description

technical field [0001] The invention relates to a lightning protection evaluation system for a wind power plant, in particular, a system for evaluating the effect of a lightning protection device in a wind power plant. Background technique [0002] With the continuous increase of the installed capacity of wind power generating sets and the continuous expansion of the scale of wind power plants, higher requirements are put forward for the reliability of the operation of wind power plants. There are many reasons for the abnormal operation of wind power plants, among which the outage and equipment damage ratio of wind power plants caused by lightning is relatively high. Therefore, it is very necessary to carry out lightning protection for wind power plants, but the lightning protection problems of wind power plants have the following characteristics: the structure of wind power generating units is towering; The cabin shell and other materials are composite materials, and the l...

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Problems solved by technology

[0003] In order to overcome the shortcoming that the existing lightning protection test detection can not reflect well the effectiveness and safety of the lightning protection effect of the wind power plant lightning protection device, the invention provides a kind of lightning protection evaluation system for the wind power plant, first Establish models of the terrain, wind turbines, lines, towers, lightning arresters, and grounding systems of the wind power plant. On this basis, simulate the lightning strike characteristics of the wind power plant, and simulate the overvoltage characteristics of the wind power plant after lightning strikes, and complete the wind power plant. Systematic Evaluation of Lightning Protection Effects in Power Plants

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