两种直流侧卸荷直驱风机LVRT分析  

Comparative analysis of PMSG LVRT on two different chopper

作　　者：任天鸿[1] 晁勤[1] 唐彬伟 王海亮 谢双玲 

机构地区：[1]新疆大学电气工程学院,新疆乌鲁木齐830047 [2]北京金风科创风电设备有限公司,北京100176 [3]江苏电力公司检修分公司输电检修中心,江苏南京211100 [4]海南耐迪电力工程有限责任公司,海南海口570217

出　　处：《电源技术》2016年第3期715-718,共4页Chinese Journal of Power Sources

基　　金：科技部"国家国际科技合作专项资助"项目(172013DFG61520);国家自然科学基金资助项目(51267020)

摘　　要：随着并网风电机组的日益增加,风力机组与电网间的相互影响日益突出。国家电网企业标准Q/GDW 392-2009及国标GB/T19963-2001均对风电机组的低电压穿越能力提出了明确的技术要求。分析了大功率永磁风力发电系统在电网电压跌落时的暂态特性,建立了基于Chopper与超级电容器的两种直流侧卸荷电路及相应的控制策略。并在PSCAD/EMTDC软件环境下搭建了相应的并网仿真模型,仿真对比了在电网电压严重跌落时两种卸荷电路对机组暂态特性的影响。仿真结果表明在网侧电压跌落的时候,两种卸荷方式在稳定直流侧电压和系统恢复方面,各有优势。With the increase of wind turbine more and more, the interaction of wind power and power grid became increasingly prominent. The enterprise standard of state grid Q/GDW 392-2009 GB/T19963-2001 clarified a clear technical requirements for the LVRT of wind turbine. Based on the voltage drop transient characteristic of large power PMSG, the actual grid connected-PMSG and chopper ultracapacitor, the model of them were set up in PSCAD/EMTDC, specific to the terrible voltage drop of PCC. The two different transient characteristic were simulated and compared of chopper circuits. From the result it is clearly that at the PCC voltage drop, the two different circuits have their own different advantages at the DC voltage and system recovery etc

关 键 词：直流侧卸荷电路 超级电容器 永磁直驱并网系统 低电压穿越 

分 类 号：TM77[电气工程—电力系统及自动化]