一种电网解列、并列与联络线潮流综合控制方法  

An Integrated Control Method of Splitting,Paralleling and Tie-line Power Flow

作　　者：刘家军[1] 王锟 谭雅岚[1] 杨松 任娟 LIU Jiajun;WANG Kun;TAN Yalan;YANG Song;REN Juan(Institute of Water Resources and Hydro-electric Engineering,Xi’an University of Technology,Xi’an 710048,Shaanxi,China)

机构地区：[1]西安理工大学水利水电学院,陕西西安710048

出　　处：《电气传动》2020年第8期100-106,共7页Electric Drive

基　　金：国家自然基金项目(51077109)。

摘　　要：为提高智能电网的自愈能力,提出了一种电网解列、并列与联络线潮流综合控制方法。在已安装的柔性交流输电(FACTS)装置中增加电气设备,使其转换成背靠背VSC-HVDC并网装置,结合失步解列判据及统一潮流控制器(UPFC)的控制原理,分析了电网解列、并列与联络线潮流控制三者间的相互作用机理。深入研究了3种运行模式间的转换电路,实现了不同运行状态之间的相互转换,增强了电网稳定性和恢复能力,提高了系统自动化水平。最后在PSCAD/EMTDC中搭建了系统仿真模型,验证了其可行性。In order to improve the self-healing ability of the smart grid,a integrated control method which is of power grid splitting,paralleling and tie-line power flow control was proposed. The flexible AC transmission(FACTS)device installed in power grid was converted to a back-to-back VSC-HVDC grid-connected device by adding electrical equipment. Combined with the out-of-step splitting criterion and the control theory of unified power flow controller(UPFC),the interaction mechanism of grid disconnection,paralleling and tie-line power flow control was analyzed. The conversion circuit among the three operating modes was researched in more depth to achieve the mutual conversion of different operating states,the stability and the capabilities of the grid were recovered,and the automation level of system was improved. Finally,the system model was simulated in PSCAD/EMTDC and the results verify its feasibility.

关 键 词：失步解列 同期并列 联络线潮流控制 控制策略 电网自愈 

分 类 号：TM762[电气工程—电力系统及自动化]