基于双馈多风电场损耗和无功裕度的优化下垂控制策略  

Optimized droop control strategy based on doubly-fed wind farms loss and reactive power margin

作　　者：李生虎[1] 章怡帆 蒋以天 薛婧 王正风 吴旭 LI Shenghu;ZHANG Yifan;JIANG Yitian;XUE Jing;WANG Zhengfeng;WU Xu(School of Electrical Engineering and Automation,Hefei University of Technology,Hefei 230009,China;Electric Power Dispatching and Communication Center,Anhui Electric Power Company,Hefei 230061,China)

机构地区：[1]合肥工业大学电气与自动化工程学院,安徽合肥230009 [2]安徽省电力公司电力调度通信中心,安徽合肥230061

出　　处：《合肥工业大学学报（自然科学版）》2020年第1期64-69,共6页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(51277049)

摘　　要：文章针对多风电场并网系统中无功功率分配不合理问题,提出一种基于双馈多风电场损耗和无功裕度的优化无功-电压下垂控制策略。基于双馈感应电机(doubly-fed induction generator,DFIG)详细模型和精确无功范围,建立了结合风电场(wind farm,WF)无功裕度、以线路功率损耗和DFIG内部铜耗为目标函数的无功优化模型。IEEE RTS 24节点算例分析表明,对比传统下垂控制策略,优化下垂控制策略对功率分配和并网点(point of common coupling,PCC)电压水平有明显的改善。For multi-wind farms and grid connected system,an optimal reactive power-voltage droop control strategy based on doubly-fed wind farms loss and reactive power margin is proposed to solve the unreasonable distribution of reactive power.On account of the detailed model of doubly-fed induction generator(DFIG)and accurate reactive power capacity,considering the reactive power ratio of wind farm(WF),the optimal power flow model of objective function which contains line power loss and internal copper loss of DFIG is established.The numerical results on IEEE RTS 24 bus test system show that the optimized droop control strategy has obvious improvement on the power distribution and the voltage level of point of common coupling(PCC).

关 键 词：双馈感应电机(DFIG)详细模型 无功-电压下垂控制 无功范围 无功裕度 无功优化 

分 类 号：TM732[电气工程—电力系统及自动化]