楚雄特高压换流站阀组解、闭锁顺序控制策略分析

针对特高压直流输电系统阀组解、闭锁顺序控制策略的复杂性,以±800kV云广特高压直流输电工程楚雄换流站为例,探讨了±800kV特高压直流换流站阀组解、闭锁顺序控制策略,分析了阀组之间配合时的解、闭锁原理,尤其重点分析了解锁单极第2个阀组和闭锁单极第1个阀组的原理及在站间通信丢失的情况下阀组间的解、闭锁顺序控制策略。该控制策略的成功应用对后续的特高压直流输电工程具有直接的指导意义。

Sequence Control Strategies of Deblocking and Blocking Valve Groups for YG UHV Convertor Station

In view of the complexity of ultra-high voltage direct current (UHVDC) transmission system about the sequence control strategies for deblocking and bocking valve groups, it explores the sequence control strategy of deblocking and blocking of valve groups in ±800 kV YG UHVDC converter station. It mainly analyzes the principles of deblocking single pole of the second valve group and blocking single pole of the first valve group, as well as the sequence control strategies of deblocking-blocking in case of losing communication between stations. This control strategy has direct guided meaning for the follow-up UHVDC transmission project.