DFIG风电场经模块化多电平柔性直流并网控制策略  

Control Strategies of DFIG-based Wind Farm Grid Integration Using Modular Multilevel VSC-HVDC Technology

作　　者：李文津[1,2] 汤广福[1,2] 贺之渊 

机构地区：[1]华中科技大学电气与电子工程学院,湖北省武汉市430074 [2]国网智能电网研究院,北京市102200

出　　处：《电力系统自动化》2013年第15期20-26,共7页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(51261130471)~~

摘　　要：比较了风电场常见的3种并网方式,分别讨论了适用于风电接入的模块化多电平柔性直流输电系统启动控制策略及双馈感应发电机(DFIG)自身的启动控制,设计了稳态运行时的模块化多电平柔性直流控制器,以可靠接纳风电并网。基于PSCAD/EMTDC仿真平台分析了所提出的控制理论,验证了在稳定运行及风速改变等不同工况下,模块化多电平柔性直流输电系统均可实现风电场启动及可靠高效并网。Three conventional grid integration methods for DFIG-based wind farms are compared.Start-up control strategies for both modular multilevel voltage source converter based high voltage direct current（VSC-HVDC） system and doubly-fed induction generator are discussed.The modular multilevel VSC-HVDC controller is designed for the reliable integration of wind farms.The proposed control strategies are simulated on the PSCAD/EMTDC platform.And it reveals that the modular multilevel VSC-HVDC system can reliably and effectively realize the start-up and integration of wind farms under different conditions,such as the stable operation condition and variable wind speed condition.

关 键 词：柔性直流输电 并网方式 风电接入 双馈感应发电机 模块化多电平换流器 启动控制 

分 类 号：TM614[电气工程—电力系统及自动化]