基于转子动能控制的双馈风电机组频率控制改进方案  

Improved Frequency Control Strategy for DFIG-based Wind Turbines Based on Rotor Kinetic Energy Control

作　　者：刘彬彬[1] 杨健维[1] 廖凯[1] 何正友[1] 

机构地区：[1]西南交通大学电气工程学院,四川省成都市610031

出　　处：《电力系统自动化》2016年第16期17-22,共6页Automation of Electric Power Systems

基　　金：四川省科技厅国际合作计划资助项目(2015HH0055)~~

摘　　要：针对传统转子动能控制的转速恢复过程对频率响应的不利影响,提出了一种基于转子动能控制的双馈风电机组频率控制改进方案。该方案通过引入恒定附加功率,使双馈风电机组在释放转子动能后稳定运行在较低转速,待系统频率恢复稳定后再进行转速恢复,从而达到改善频率响应特性的目的。基于MATLAB/Simulink搭建了含双馈风电机组的四机两区域仿真模型,并对所提方案进行了仿真验证。仿真结果表明,相比于传统的转子动能控制方法,所提出的改进方案能有效改善转速恢复对频率响应的不利影响,提升风电机组参与系统调频的效果。In order to eliminate the impact of rotor speed recovery process of the conventional kinetic energy control on the frequency response , an improved frequency control strategy for doubly ‐fed induction generator （ DFIG ） based wind turbines based on rotor kinetic energy control is proposed . This scheme aims to make DFIG‐based wind turbines stably operate at a low speed after releasing its kinetic energy through introducing a constant additional power . And the rotor speed recovery process would not start until system frequency returns to normal value , so as to improve frequency response . The model of four ‐machine two‐area system with DFIG‐based wind turbines is developed by MATLAB/Simulink . Simulation results show that , compared with the conventional rotor kinetic energy control , the proposed control method is able to effectively eliminate the impact of the rotor speed recovery process on the frequency response , and the performance of wind turbines participating into frequency regulation is improved .

关 键 词：风力发电 转子动能控制 双馈感应发电机 频率响应 

分 类 号：TM614[电气工程—电力系统及自动化] TM315