基于工作点在线计算的双馈机组网侧变流器高电压穿越控制  

High Voltage Ride Through Control of Grid-side Converter in Doubly-fed Wind Turbine Based on Online Calculation of Operating Points

作　　者：王耀函 张扬帆 宋鹏[1] 刘辉[1] 吴林林[1] 张瑞芳 WANG Yaohan;ZHANG Yangfan;SONG Peng;LIU Hui;WU Linlin;ZHANG Ruifang(Key Laboratory of Grid-connected Operation Technology for Wind-Solar-Storage Hybrid System of State Grid Corporation of China(Electric Power Research Institute,State Grid Jibei Electric Power Company Limited),Beijing 100045,China)

机构地区：[1]风光储并网运行技术国家电网公司重点实验室(国网冀北电力有限公司电力科学研究院),北京100045

出　　处：《电力系统及其自动化学报》2022年第9期24-31,共8页Proceedings of the CSU-EPSA

摘　　要：为保证电网运行的安全与稳定性,避免电网电压骤升时风电机组从电网中解列,需提升风电机组高电压穿越的能力。为快速抑制高电压故障时网侧过调制引起的电压、电流冲击,首先确定电网电压骤升时网侧变流器安全运行区域。在此基础上,在线计算双馈风电机组在不同电网电压条件下的高电压穿越稳态最佳工作点,以保证网侧过调制时间最短。同时,设计了参数补偿模块以消除稳态工作点误差。仿真结果表明,该控制策略保证风电机组在电网电压故障骤升期间不脱网运行,能够根据电网要求提供一定的无功支撑,且提升了双馈风电机组在故障穿越期间的响应速度及稳态控制效果。To ensure the operation safety and stability of power grid and avoid the disconnection of wind turbines from power grid when the grid voltage suddenly rises,it is necessary to improve the capability of high voltage ride through(HVRT)of wind turbines.To quickly suppress the voltage and current impact caused by grid-side overmodulation under high voltage fault,the safe operation area for the grid-side converter is determined at first.On this basis,the optimal operating points of a doubly-fed wind turbine under different grid voltage conditions are calculated online,so that the grid-side overmodulation time is the shortest.Meanwhile,parameter compensation modules are designed to eliminate errors at the steady-state operating point.Simulation results show that the proposed control strategy can ensure that the wind turbines do not run off the grid during HVRT,which provides certain reactive power support according to the requirements of power grid and improves the response speed and steady-state control performances of wind turbines during fault ride through.

关 键 词：双馈风电机组 高电压穿越 网侧变流器控制 最佳工作点 

分 类 号：TM614[电气工程—电力系统及自动化] TM315