摘要
为解决风电场并网运行存在的电压不稳问题,在风电场并网点进行电容器的分组投切和控制,并对风机安装快速投切电容器组的容量及投切规则进行了研究,提出了计及风速变化对风电场输出有功和无功功率影响的电容器总容量计算方法及控制规则。应用PSCAD/EM TDC软件,对某风电场进行了无功功率补偿优化仿真,结果表明:计算量少,总容量和分组容量计算准确,电容器动作次数较少,保证了风电场并网运行时的电压稳定。
In order to solve the voltage unstability problems in wind farm integration, the switching and controlling of capacitors at integration point are in groups. The capacity and switching rules of the quick switching capacitor group installed in wind turbines are studied. The total capacity calculation method and switching rules are put forward, which considering the change of wind speed effect on the active and reactive power. Using PSCAD/ EMTDC software to simulate the optimal reactive power compensation of the wind farm, the results showed that this method has smaller computational complexity, the total capacity and packet capacity for the reactive power compensation is accurate, the switch＇s state changes seldom, the voltage unstabilizing problems of grid-connected wind farm is solved perfectly.
出处
《吉林电力》
2008年第6期17-19,共3页
Jilin Electric Power
关键词
无功功率补偿
感应发电机
风力发电
电压稳定
reactive power compensation
induction generator
wind power
voltage-stabilizing
