Thunder and lightning protection-based spatial optimization arrangement method for large-scale wind power plant

Abstract

The invention discloses a thunder and lightning protection-based spatial optimization arrangement method for a large-scale wind power plant. Based on a physical model of thunder and lightning leader progression, a calculation method for a dynamic striking distance of fan blades is given. An electric geometric method is combined with the physical model of the thunder and lightning leader progression; an electric geometric analysis model for the fan blades is built; by utilizing the electric geometric model of the fan blades, a protective range of a blade lightning protection system is given; thunder and lightning between fans of the large-scale wind power plant are calculated in a mutual shielding manner; and a fan arrangement interval of the wind power plant is determined from the perspective of thunder and lightning protection. The method can reduce the lightning stroke number of the wind power plant on the whole and has a certain positive effect on stable operation of the wind power plant.

Description

technical field [0001] The invention relates to a space optimization layout method of a large-scale wind farm based on lightning protection. Background technique [0002] Wind power is an important part of clean energy, and its large-scale development can effectively promote the reform of the world's energy system. However, due to the environment in which the wind farm is located and the special structure of the wind turbine itself, it is extremely vulnerable to atmospheric lightning strikes. In wind farm lightning strike accidents, blade damage accounts for more than 40% of the total lightning strike damage, and most of them are irreparable damage. The high cost of fan blade cost, hoisting and maintenance has seriously affected the economic and stable operation of wind farms. However, the current layout of wind farms is mainly aimed at power generation efficiency, and there are few studies on the optimization of wind farm layout from the perspective of wind farm lightning ...

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Problems solved by technology

[0004] From the above research, it is found that the layout of existing wind farms has not been analyzed from the perspective of lightning protection, and the economic losses caused by lightning strikes on wind farms have always been high. Looking for an optimal layout of wind farms from the perspective of lightning protection method, which complements the design methods of existing wind farms, and has certain reference significance for the safe and economical operation of wind power

[0005] In terms of lightning protection for wind turbines, most of them are based on experimental research, and the objects are mostly single blades or single wind turbines, which are not suitable for analysis and research on the layout optimization of wind turbines in large-scale wind farms. At the same time, in terms of simulation modeling, the existing The simulation research still takes a single wind turbine as the research object, and does not study the lightning protection optimization layout of the entire wind farm

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