并网风电场动态无功补偿方案仿真研究  

Simulation Study on Dynamic Reactive Power Compensation Scheme of Wind Farms Connected

作　　者：王晓明[1] 穆星星[1] 唐美[2] 许天鹏[1] 肖雯娟[1] 

机构地区：[1]兰州理工大学电气工程与信息工程学院 [2]兰州理工大学机电工程学院,兰州730050

出　　处：《科学技术与工程》2013年第9期2487-2491,共5页Science Technology and Engineering

摘　　要：以异步风力发电机组为研究对象,针对目前并联电容器组的无功补偿方式所显现出来的弊端,采用动态无功补偿改善并网风电场无功特性。在风速渐变和电网短路故障的情况下,分别采用静止无功补偿和静止同步补偿进行无功补偿,并以Matlab/Simulink环境为平台,搭建风电场模型、动态无功补偿和风速模型。仿真结果表明,虽然两者均可向风电场提供无功功率补偿以稳定并网风电场电压,但是静止同步补偿器能更快地使系统电压和有功功率接近故障前的稳定运行状态,需要无功补偿容量少,更适合用于并网风电场的动态无功补偿。With the asynchronous wind generators as research object, the problems of the voltage stability and the generation mechanism of the reactive power compensation during the wind farms connected operation are ana- lyzed. For paralleling capacitor bank has shown obvious defects, therefore dynamic reactive power compensation is emploiedto improve reactive characteristics of grid-connected wind farms. With the influences of different wind dis- turbances and grid faults on wind farms, wind farm model is set up and dynamic reactive power compensation sys- tem and wind speeds are built in the Matlab/Simulink software, The simulation result shows that they can provide reactive power compensation to ensure the voltage stability of the wind farms. But STATCOM needs less reactive compensation capacity to make sure the voltage and active power approaching steady state before the faults more quickly, Therefore STATCOM is more suitable for wind farms connected dynamic reactive power compensation.

关 键 词：风电场 无功补偿 静止同步补偿器 暂态稳定性 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程]