| Abstract |
The wind power industry is a new renewable energy industry, and vigorously developing the wind power industry is of great significance to adjusting the energy structure, promoting the revolution of energy production and consumption, and promoting the construction of ecological civilization. Wind farms are mostly built in the ridges, hills, Gobi desert and coastal areas with abundant wind resources, and the special geographical environment makes the production and auxiliary equipment vulnerable to lightning strikes. The soil resistivity of the wind site is high and the corrosion is strong, the design of grounding network is difficult, the construction location is small, the existing grounding materials are difficult to transport, and the grounding network is a hidden project, which is difficult to maintain in the later stage and the repair cost is high. It is urgent to solve the problem of grounding design and construction in high resistivity and corrosive geological environment. A wind power project is located on the edge of the Kubuqi Desert in Inner Mongolia Autonomous Region, with a construction capacity of 200 MW. The geology is mainly composed of windblown fine sand, and the electrical resistivity is relatively high. The average approximate value of each location is 300-600 Ω. m, which is 2-4 times the electrical resistivity of loess and has a certain degree of corrosiveness. This design scheme can effectively improve the lightning protection and resistance reduction performance of the wind power generation system by studying the grounding layout, anti-corrosion performance of grounding materials, and resistance reduction performance of the project The safety, reliability, and economy of the grounding system provide technical reference and basis for the construction of similar projects in the future.
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