高压直流输电工程交流母线分裂运行跳闸逻辑分析及优化

Logic Analysis and Optimization of AC Bus Splitting Operation in HVDC Project

分析了贵广I回、II回及糯扎渡直流工程的交流母线分裂运行的判断逻辑,说明了交流母线分裂运行的跳闸逻辑不断优化的过程,指出了当前交流母线分裂运行跳闸逻辑仍存在的问题。针对交流母线分裂运行后各运行换流器和交流滤波器的不同连接情况,提出了优化后具有较强可操作性的跳闸策略,避免了不必要的换流器跳闸,对高压直流输电系统设计、电网运行和防止事故扩大具有重要的参考意义。

The judgment logic of AC busbar splitting operation of Guiguang I,II and Nuozhadu DC Engineering is analyzed.The process of continuous optimization of tripping logic for split operation of AC bus is explained,and the problems existing in current tripping logic for split operation of AC bus are pointed out.According to the different connection conditions of converters and AC filters after the split operation of AC bus,a tripping strategy with strong operability after optimization is proposed to avoid unnecessary converter tripping.This paper has important reference significance for HVDC system design,power grid operation and accident prevention.