大规模海上风电高电压穿越研究进展与展望

Review on High Voltage Ride-Through Strategies for Offshore Doubly-Fed Wind Farms

海上风电因其风速高、风力稳定、对环境影响小、发电量大等特点成为可再生能源的发展重心。因海上传输线路产生容性无功,风电场容易面临高电压穿越问题。梳理了当前国内外海上风电机组高电压穿越的发展历程,并以当前主流机型双馈风机系统为研究对象,从风机控制器控制策略、电压源换流器控制策略、增加补偿装置以及增加组合保护电路方面,对目前文献进行了分类和总结。通过对现有高电压穿越方法的综述,指出了大规模海上风电场高电压穿越存在的问题和进一步研究方向。

Offshore wind power has become the priority of renewable energy utilization due to high wind speed,stable wind power,small impact on the environment and large power generation.In order to prevent the wind turbine from being off-grid,it is important to study the high voltage ride-through strategies of wind turbine.This paper summarizes the development history of high voltage ridethrough,both domestic and foreign,and takes the mainstream model doubly-fed wind power system as the research object.This paper classifies and summarizes the current literature from the aspects of improving control strategy,adding hardware protection equipment.Through the review of existing high-pressure traversing methods,it aims to point out the problems existing in the current high voltage ride-through of large-scale offshore wind farms and the direction that needs further research.