±800kV云广工程逆变站阀组最后断路器保护逻辑改进分析  

Improvement on Last Breaker Protection Logic for Valve Group in Inverter Station of ±800 kV Yun-Guang DC System

作　　者：汲广[1] 刘茂涛[1] 张志朝[2] 余荣兴[1] 姚自林[1] 

机构地区：[1]中国南方电网超高压输电公司广州局,广东省广州市510405 [2]中国南方电网超高压输电公司,广东省广州市510620

出　　处：《电力系统自动化》2013年第4期130-133,共4页Automation of Electric Power Systems

摘　　要：±800kV云广特高压直流输电工程单极采用双阀组串联设计,每个阀组均配置最后断路器保护。文中分析了云广特高压工程逆变站阀组最后断路器保护跳闸的原理,指出阀组最后断路器保护跳闸逻辑存在威胁系统安全的风险。针对该风险提出跳闸逻辑的改进方案,并在现场得到应用,对高压直流输电系统设计、电网安全稳定运行具有重要的参考意义。±800 kV Yun-Guang DC transmission project is designed with two series 400 kV converters for each pole, and each converter is designed with an independent last circuit breaker protection. The principle o{ last circuit breaker protection in inverter station in Yun-Guang ultra high voltage direct current （UHVDC） project is analyzed in detail. It is pointed out that the protection logic of last breaker protection exists major risk to power grid. An improved scheme of the tripping logic is given and executed on site to avoid the risk, which has important reference value on the design of high voltage DC transmission system and stable operation of power grid.

关 键 词：特高压直流输电系统 阀组 最后断路器保护 改进方案 

分 类 号：TM721.1[电气工程—电力系统及自动化] TM772