一种多地DFIG联动控制的多馈入受端系统连续换相失败抑制策略  

A Continuous Commutation Failure Suppression Strategy for Multi-site DFIG Linkage Control of Multi-feeder Receiver Systems

作　　者：江毅 翁汉琍[1] 曹善康 吴宇奇 熊振钦 梅瀚予 林湘宁[2] 魏繁荣[2] 李正天[2] 李振兴[1] JIANG Yi;WENG Hanli;CAO Shankang;WU Yuqi;XIONG Zhenqin;MEI Hanyu;LIN Xiangning;WEI Fanrong;LI Zhengtian;LI Zhenxing(Hubei Provincial Collaborative Innovation Center for New Energy Microgrid(China Three Gorges University),Yichang 443002,Hubei Province,China;State Key Laboratory of Advanced Electromagnetic Engineering and Technology(Huazhong University of Science and Technology),Wuhan 430074,Hubei Province,China;College of Electrical Engineering and New Energy,Three Gorges University,Yichang 443002,Hubei Province,China)

机构地区：[1]新能源微电网湖北省协同创新中心(三峡大学),湖北省宜昌市443002 [2]强电磁工程与新技术国家重点实验室(华中科技大学),湖北省武汉市430074 [3]三峡大学电气与新能源学院,湖北省宜昌市443002

出　　处：《中国电机工程学报》2024年第9期3452-3462,I0009,共12页Proceedings of the CSEE

基　　金：国家自然科学基金企业创新发展联合基金(U22B20106)。

摘　　要：我国沿海负荷中心呈现直流多馈入的结构特征,海上风电的大规模开发使得系统在非正常工况下容易诱发次同步振荡,电压的快速波动可能会造成连续换相。针对该现象进行机理分析,通过优化双馈风电机组(doubly fed induction generator,DFIG)的控制方法,有效抑制了次同步振荡。同时,针对不同区域风电场调节能力差异,通过关联各直流落点的多馈入交互作用因子(multi-infeed interaction factor,MIIF),充分调动不同区域风电场的补偿能力抬升系统电压。该方法有效地抑制直流多馈入系统的异地连续换相失败。最后,通过PSCAD仿真对比验证所提策略的有效性。The large-scale development of offshore wind power makes the system prone to sub-synchronous oscillations under abnormal operating conditions,and the rapid voltage fluctuations may cause continuous commutation failure.In this paper,we analyze the mechanism of this phenomenon and effectively suppress the sub-synchronous oscillations by optimizing the control method of doubly fed induction generator(DFIG).At the same time,the multi-infeed interaction factor(MIIF)of each DC dropout point is associated with the difference in the regulation ability of wind farms in different regions to fully mobilize the compensation ability of wind farms in different regions to raise the system voltage.This method effectively suppresses the failure of off-site continuous commutation failure in the DC multi-infeed system.Finally,the effectiveness of the proposed strategy is verified by PSCAD simulation comparison.

关 键 词：双馈风电场(DFIG) 次同步振荡 直流多馈入 连续换相失败 

分 类 号：TM721[电气工程—电力系统及自动化] TM614