直流保护系统出口回路存在的问题及改进建议  

Outlet Circuit Existing Problems in HVDC Protection System and Comments

作　　者：朱韬析[1] 郭卫明[1] 何杰[1] 

机构地区：[1]中国南方电网公司超高压输电公司广州局,广州市510405

出　　处：《电力建设》2010年第3期26-29,共4页Electric Power Construction

摘　　要：首先比较了直流保护系统出口回路与传统交流保护出口回路的特点;然后结合实例分析了直流保护系统出口回路存在的问题,如投切压板操作易对保护出口继电器造成冲击,而且投入压板瞬间在保护出口继电器辅助接点副边侧可能感应出较高电压,从而导致误出口;最后提出了改进建议。The paper introduces characters of DC protection system outlet circuit and traditional AC protection outlet circuit first.And then it analyzes outlet circuit existing problems in HVDC protection system in combination with some examples,such as impact of in/off pressing board operation on protection outlet relay,while the protection outlet relay auxiliary node sub-side may induce higher voltage at the moment of board put-in,which may result in wrong outlet.Some improving suggestions are given at last.

关 键 词：直流输电 保护系统 出口回路 

分 类 号：TM72[电气工程—电力系统及自动化]