基于DVR的双馈风电机组不对称电压故障穿越  

Asymmetrical voltage fault ride-through of wind turbine with DFIG using DVR

作　　者：凌禹[1] 窦真兰 LING Yu;DOU Zhenlan(Department of Electrical Engineering,Shanxi Datong University,Datong 037003,China;Electric Power Research Institute,State Grid Shanghai Municipal Electric Power Company,Shanghai 200434,China)

机构地区：[1]山西大同大学电气工程系,山西大同037003 [2]国网上海电力公司电力科学研究院,上海200434

出　　处：《电力自动化设备》2019年第2期65-70,77,共7页Electric Power Automation Equipment

基　　金：山西省自然科学基金资助项目(2015011065);大同市基础研究项目(2015112)~~

摘　　要：基于动态电压恢复器DVR(Dynamic Voltage Restorer)能够在短时间内恢复电压的特点,研究了DVR协助双馈风电机组穿越不对称电压故障的能力。针对双馈风电机组,选择了合适的DVR拓扑结构及其补偿策略,分析了基于比例-谐振PR(Proportional-Resonant)控制器的DVR控制方法,并提出采用单环电压反馈控制的策略。利用PSCAD/EMTDC搭建的详细仿真平台,展示了在DVR的保护下双馈风电机组成功穿越不对称电压故障的能力及其改善的瞬态性能。Based on the characteristics that DVR( Dynamic Voltage Restorer) can restore voltage in a short time,the capability of DVR to assist DFIG( Doubly-Fed Induction Generator) wind turbines for the improvement of asymmetrical voltage fault ride-through is investigated. For DFIG wind turbines,the topology and compensation strategy of DVR are selected. The DVR control method based on proportional-resonant controller is analyzed and a single-loop voltage feedback control strategy is proposed. The simulation experiments are performed with PSCAD/EMTDC. Results show that DFIG wind turbines can successfully ride through asymmetrical voltage faults under DVR protection and its improved transient behaviors.

关 键 词：双馈感应电机 故障穿越 风力发电 动态电压恢复器 不对称电压故障 

分 类 号：TM614[电气工程—电力系统及自动化]