摘要
雷击情况下DPFC(分布式潮流控制器)的电压和电流暂态特性分析是DPFC设计和工程运行中需要考虑的重要问题。首先,在介绍DPFC的结构和工作原理的基础上,分别搭建了DPFC子模块集中布置于变电站与分散布置于输电线路两种情况的仿真模型。然后,仿真分析了DPFC在雷电反击避雷线与雷电绕击输电线时的电磁暂态特性,获得了遭受雷击时DPFC关键位置的过电压和过电流水平。最后,针对雷电反击与绕击情况,对比分析了DPFC子模块集中布置与分散布置时过电压和过电流的差异。得出以下结论:雷电反击避雷线时,集中布置的DPFC对地过电压和子模块端口过电压大于分散布置时的结果;无论绕击还是反击,集中布置的DPFC子模块和避雷器过电流均小于分散布置时的结果。
The analysis of transient voltage and current characteristics of DPFC(distributed power flow controller)under lightning strikes is an essential consideration in its design and operational management.Firstly,the structure and operational principles of DPFC are introduced,and simulation models are respectively constructed for two sce⁃narios:a centralized arrangement of DPFC sub-modules in substations and a decentralized arrangement along trans⁃mission lines.Subsequently,the electromagnetic transient characteristics of DPFC are simulated and analyzed in the case of back strikes on the conductors and circling strikes on the transmission line,and the overvoltage and over⁃current levels at critical positions of DPFC during lightning strikes are thereby obtained.Finally,the differences in overvoltage and overcurrent between the centralized and decentralized arrangement of DPFC sub-modules are com⁃pared and analyzed in the case of back strikes and circling strikes.It is concluded that when lightning strikes the lightning conductor,the overvoltage to earth and the overvoltage at the submodule port of the centrally arranged DPFC are larger than the results of the decentralized arrangement;the overcurrents of the submodule of the centrally arranged DPFC and the arrester are smaller than the results of the decentralized arrangement.
作者
宋金根
周路遥
李时泰
孟祥瑞
邵先军
卢铁兵
SONG Jingen;ZHOU Luyao;LI Shitai;MENG Xiangrui;SHAO Xianjun;LU Tiebing(State Grid Zhejiang Electric Power Co.,Ltd.,Hangzhou 310007,China;State Grid Zhejiang Electric Power Co.,Ltd.Research Institute,Hangzhou 310014,China;North China Electric Power University,Beijing 102206,China)
出处
《浙江电力》
2023年第11期63-71,共9页
Zhejiang Electric Power
基金
国网浙江省电力有限公司科技项目(5211DS20008F)。
关键词
分布式潮流控制器
过电压
过电流
电磁暂态
雷击
DPFC
overvoltage
overcurrent
electromagnetic transient
lightning strike
作者简介
宋金根(1968),男,高级工程师,主要从事电力设备管理工作;通信作者:周路遥(1992),男,工程师,主要从事输变电设备状态监测分析及状态评价技术研究工作。
