三端智能软开关运行控制模式切换技术  

Switching Technology of Three-Terminals Soft Open Point Control Mode

作　　者：汪辉 曹毅 罗宁 高华 张彦 张裕 程浩忠[4] WANG Hui;CAO Yi;LUO Ning;GAO Hua;ZHANG Yan;ZHANG Yu;CHENG Haozhong(College of Electrical Engineering,Shanghai University of Electric Power,Shanghai 200090,China;China Southern Power Grid Research Institute Co.,Ltd.,Guangzhou 510080,China;Power Grid Planning and Research Center,Guizhou Power Grid Co.,Ltd.,Guiyang 550003,China;Key Laboratory of Control of Power Transmission and Conversion,Ministry of Education(Department of Electrical Engineering,Shanghai Jiao Tong University),Shanghai 200240,China)

机构地区：[1]上海电力大学电气工程学院,上海200090 [2]南方电网科学研究院有限责任公司,广东广州510080 [3]贵州电网有限责任公司电网规划研究中心,贵州贵阳550003 [4]电力传输与功率变换控制教育部重点实验室(上海交通大学电气工程系),上海200240

出　　处：《中国电力》2023年第4期104-111,共8页Electric Power

基　　金：中国南方电网有限责任公司科技项目(GZKJXM20210368)。

摘　　要：多馈线故障下,提出三端智能软开关(soft open point,SOP)运行控制模式切换技术。首先,结合三端SOP控制模式的内外环结构,提出了一种改进控制逻辑的控制模式切换策略;然后,为实现多馈线故障下SOP各工作模式间平稳过渡,提出了适用于多馈线故障下三端SOP的控制模式切换流程;接着,通过采用相角预同步策略,保证了失电馈线并网时相角的平滑性;最后,搭建了含三端SOP的配电系统模型,并进行仿真。仿真结果表明:所提的运行控制模式切换技术能减少直流侧最大电压波动,各端口电压和相角能够平稳过渡。This paper proposes a three-terminals soft open point(SOP)operation control mode switching technology under the multifeeder faults.Firstly,combined with the inner and outer loop structures of control mode of three-terminals SOP,a control mode switching strategy with improved control logic is proposed.Secondly,in order to realize the smooth transition between SOP working modes under multiple feeder faults,a control mode switching process suitable for three-terminals SOP under multiple feeder faults is proposed.Then,by adopting the phase angle pre-synchronization strategy,the smoothness of the phase angle when the power-loss feeder is connected to the grid is ensured.Thirdly,the phase angle pre-synchronization strategy is adopted to ensure the smoothness of the phase angle when the power-loss feeder is connected to the grid.Finally,A power distribution system model with threeterminals SOP is built for simulation.The simulation results show that the proposed operation control mode switching technology can reduce the maximum voltage fluctuation on the DC side,and the voltage and phase angle of each port can transition smoothly.

关 键 词：智能软开关 控制模式切换 多馈线故障 相角预同步 

分 类 号：TM564[电气工程—电器] TP273[自动化与计算机技术—检测技术与自动化装置]