同步调相机抑制连续换相失败的效果分析  

Analysis on the Effect of Synchronous Condenser for Continuous Commutations Failure Mitigation

作　　者：章民昊 刘建锋 周健 潘婷 ZHANG Minhao;LIU Jianfeng;ZHOU Jian;PAN Ting(Shanghai University of Electric Power,Shanghai 200090,China;State Grid Shanghai Electric Power Company Electric Power Science Research Institute,Shanghai 200080,China)

机构地区：[1]上海电力大学,上海200090 [2]国网上海市电力公司电力科学研究院,上海200080

出　　处：《上海电力大学学报》2025年第1期13-20,共8页Journal of Shanghai University of Electric Power

摘　　要：直流密集落点区域的多馈入直流系统具有负荷密度高、交直流耦合紧密、多直流相互作用等特点,交流故障引发的单回直流系统换相失败会导致功率波动,引起近区多回直流发生相继换相失败或后续换相失败,进而产生直流闭锁问题。基于上海电网实际数据,采用PSCAD/EMTDC仿真软件构建了上海地区多馈入直流输电系统模型。首先,通过仿真分析了多回直流连续换相失败现象;其次,研究了运用同步调相机抑制连续换相失败的效果;最后,通过连续改变各故障参数,比较了不同条件下接入同步调相机对换相失败的抑制效果。The multi-infeed DC(MIDC)system in the DC dense cluster area has the characteristics of high load density,close coupling between AC and DC,and multi DC interaction.The commutation failure of a single DC system caused by the AC fault generates the power fluctuation,which may cause successive commutation failure of multiple DC in near area.It poses a risk of DC blocking.Based on the actual data of Shanghai power grid,a MIDC system model of Shanghai area is built by PSCAD/EMTDC simulation software.Firstly,the phenomenon of multiple DC continuous commutation failures is analyzed through simulation.Secondly,the effect of suppressing commutation failures by synchronous condensers is studied.Finally,the effects of suppressing commutation failure by synchronous condensers under different conditions are compared through continuously changing the fault parameters.

关 键 词：直流密集落点 连续换相失败 同步调相机 动态无功补偿 

分 类 号：TM723[电气工程—电力系统及自动化]