基于储能型DVR的双馈风电机组电压穿越协调控制  

Coordinated Control of Voltage Ride Through for DFIG Wind Turbine Systems Using Energy-based DVR

作　　者：许建兵[1] 江全元[1] 石庆均[2] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027 [2]重庆市电力公司长寿供电局,重庆市401220

出　　处：《电力系统自动化》2013年第4期14-20,共7页Automation of Electric Power Systems

基　　金：国家重点基础研究发展计划(973计划)资助项目(2012CB215106);国家高技术研究发展计划(863计划)资助项目(2011AA05A113);浙江省科技计划资助项目(2009C34013);浙江省自然科学基金资助项目(R1080089)~~

摘　　要：针对双馈感应发电机(DFIG),提出了一种基于超级电容器(SC)储能的动态电压调节器(DVR)实现电压穿越的协调控制策略。在电网电压故障时,基于SC的DVR对DFIG端口电压进行完全补偿,使得DFIG端口电压始终维持在正常水平;并通过DFIG和基于SC的DVR协调控制,减少DFIG在故障期间输出的有功功率,从而减少故障期间所需的DVR功率和容量。在MATLAB/Simulink环境下搭建仿真模型,分别进行了对称和不对称故障下的零电压穿越、低电压穿越和高电压穿越仿真。仿真结果证明了所提出的协调控制策略的有效性。A coordinated control strategy, which uses super capacitor （SC）-based dynamic voltage restorer （DVR）, is proposed to improve the voltage ride through capability of doubly fed induction generators （DFIGs）. The voltage level of DFIG stator is fully compensated by SC based DVR during grid faults. The active power of DFIG is deceased by the coordinated control to minimise the power rating of DVR. A simulation model is established in MATLAB/Simulink. Zero voltage ride through, low voltage ride through and high voltage ride through during symmetrical and asymmetrical grid faults are simulated respectiveLy, The validity of the proposed coordinate control strategy is verified by the simulation results.

关 键 词：双馈感应发电机 风力发电 超级电容器 动态电压调节器 电压穿越 协调控制 

分 类 号：TM315[电气工程—电机] TM714.2