基于串联动态制动电阻的异步风电机组暂态稳定性研究  

Study on transient stability of asynchronous wind turbine based on series dynamic braking resistor

作　　者：肖兰[1] 赵斌[1,2] 李建[3] 范镇南[1,2] 

机构地区：[1]四川电力职业技术学院,四川成都610072 [2]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044 [3]四川省电力公司眉山公司,四川眉山620010

出　　处：《可再生能源》2011年第6期48-52,共5页Renewable Energy Resources

基　　金：中央高校基本科研业务费资助项目(CDJXS10151152)

摘　　要：以并网笼型异步风电机组为例,分析了利用串联动态制动电阻提高并网异步风电机组在电网故障下暂态稳定性的作用机理以及效果。建立了并网异步风电机组的数学模型,基于Matlab/Simulink仿真平台,对比分析了采用串联动态制动电阻、并联动态制动电阻以及无功补偿装置的作用效果。仿真结果表明,采用串联动态制动电阻可以有效改善并网异步风力发电机组的暂态稳定性;同时,采用串联动态制动电阻和无功补偿装置,可显著提高机组的暂态稳定性,减少对无功补偿的需求,降低风电场的运行成本。Take the squirrel-cage type asynchronous wind turbine as example, the mechanism and efficiency of the improvement on the transient stability of wind turbine with grid-connected used by series dynamic braking resistor under the power grid fault is analyzed, the mathematical model of asynchronous wind turbine.with grid-connected is established, the transient behaviors of the wind turbine generator system using series dynamic breaking resistor, parallel dynamic breaking resistor and reac- tive compensation device are analyzed and compared based on Matlab/Simulink,. The simulation resuits have shown that the series dynamic breaking resistor can effectively improve the transient stability of asynchronous wind turbine system. Using series dynamic breaking resistor and reactive compensation device simultaneously can improve the transient stability of wind turbine generator system significantly, which reducing the reactive compensation requirement and cost of wind farm.

关 键 词：风力发电 暂态稳定性 动态制动电阻 

分 类 号：TK89[动力工程及工程热物理—流体机械及工程] TM12[电气工程—电工理论与新技术]