厦门柔性直流换流站保护系统信号回路改进方法研究  

Improvement of Signal Circuit for Protection System in Xiamen HVDC Converter Station

作　　者：田存建 TIAN Cunjian(State Grid Fujian Electric Power Supply Co.,Ltd.,Maintenance Branch,Xiamen,Fujian 330031,China)

机构地区：[1]国网福建电力有限公司检修分公司,福建厦门330031

出　　处：《东北电力技术》2018年第2期25-30,46,共7页Northeast Electric Power Technology

摘　　要：结合厦门±320 kV柔性直流换流站"12.13"跳闸事件及换流站直流控制保护系统动作特性,对柔性直流换流站典型的控制保护系统信号回路进行研究。针对直流分压器二次回路设计缺陷,提出了3种改进方法。给出了详细电路,并通过仿真验证了3种方法的可行性。结合柔性直流换流站的工程实际应用,对3种方法进行深入分析,指出了各自的优缺点及改造中的注意事项,同时提出下一步研究计划。In conjunction with the“12.13”tripping event of Xiamen+320 kV flexible DC converter station and operation characteristics of DC control protection system in converter station.It studies the signal loop of typical control and protection system of flexible DC converter station.In view of the design defects of the low voltage of the DC voltage divider,three improved methods are proposed.Three methods are analyzed in depth.The respective merits and demerits are pointed out.At the same time putted forward further research plan.

关 键 词：柔性直流换流站 直流控制保护系统 直流分压器 电压合并单元 物理隔离 

分 类 号：TM721.1[电气工程—电力系统及自动化]