静止无功发生器在风电场电网中的应用研究  

Application Research of Static Var Generator in Wind Power System

作　　者：王钢[1] 赵莉君[1] 李捷[1] 余亚冰[2] 

机构地区：[1]山西省电力公司太原供电公司,山西太原030012 [2]兰州理工大学电气工程与信息工程学院,甘肃兰州730050

出　　处：《工矿自动化》2012年第9期63-66,共4页Journal Of Mine Automation

基　　金：甘肃省自然科学基金项目(1014RJZA013)

摘　　要：分析并比较了晶闸管控制电抗器型无功补偿装置和静止无功发生器的动态响应时间和谐波特性,得出静止无功发生器动态响应速度更快、谐波含量更低的结论;对静止无功发生器在风电场电网正常运行和发生三相接地短路故障时的应用情况进行了仿真研究,结果表明,静止无功发生器可在风电场电网正常运行时降低输电线路损耗、抑制并网点电压的波动和闪变,在电网发生短路故障时增强风机低电压穿越能力;在某风电场通过断开静止无功发生器端子排上330kV母线PT空气开关来模拟电网三相接地短路故障,测试结果证明,静止无功发生器能够在较短的时间内达到最大容性无功输出,提高了电网运行的稳定性。The paper analyzed and compared dynamic response time and harmonic characteristics of thyristor controlled reactor type static vat compensator and static var generator, and got a conclusion that static var generator has quicker dynamic response speed and lower harmonic content. It did simulation research of static vat generator applied in wind power system at normally running time and three-phase grounding short-current fault time separately. The simulation results showed that static var generator can reduce transmission line loss and restrain voltage fluctuation and flicker of the coupling when wind power system runs normally and enhance low voltage ride through ability when short-current fault happens. It also simulated three-phase grounding short-current fault by cutting off 330 kV PT air switch of terminal board of static var generator in a wind power system, and got a result that the static var generator can achieve the maximum capacitive reactive output in a short time so as to improve stability of power grid.

关 键 词：风力发电 风电场 静止无功发生器 低电压穿越 谐波特性 

分 类 号：TD605[矿业工程—矿山机电]