双馈式风电场暂态电压控制系统及其RTDS试验  

Transient voltage control system and RTDS test for doubly-fed wind farm

作　　者：李少华 张爱玲 张崇见[2] 郝正航[2,3] 张望 柴建云[3] 姚致清 

机构地区：[1]许继电气股份有限公司,河南许昌461000 [2]许继集团有限公司,河南许昌461000 [3]清华大学电机工程与应用电子技术系,北京100084

出　　处：《电力自动化设备》2014年第9期137-142,共6页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51267003);中国博士后科学基金资助项目(2013M531678);许继电气股份有限公司资助项目(2012)~~

摘　　要：为了提高双馈式风电场的暂态电压支撑能力,提出了风电场暂态无功附加控制方案。通过理论分析得出以下结论:强电网条件下,依靠风机自身无功支撑暂态电压跌落,会引起转子电流显著增长;而在弱电网条件下,风电场发出暂态无功不仅有利于抑制暂态电压跌落,而且转子励磁电流的增长也是可以接受的。为了实施所提方案,制作了由工控机、现场总线和光纤设备构成的试验样机,并在实时数字仿真器上进行了闭环试验。试验结果证明了理论分析的正确性。In order to enhance the grid-voltage support ability of DFIG（Doubly fed Induction Generator） wind farm,a strategy of the additional transient reactive power control of wind farm is presented. Theoretical analysis points out that：when connected with a strong power grid,the transient voltage support by the reactive power of wind turbines will result in the obvious increase of rotor current;when connected with a weak power grid,the reactive power generated by wind farm may suppress the transient voltage sag while the rotor exciting current increase is tolerable. For implementing the control strategy,a prototype composed of industry computer,field bus and fiber-optical is designed and the closed-loop test is conducted based on RTDS. Results validate the correctness of theoretical analysis.

关 键 词：风电场 电压控制 RTDS 弱电网 试验 

分 类 号：TM614[电气工程—电力系统及自动化]