贵广Ⅰ回直流输电系统VBE故障分析

Analysis on the VBE Fault in Guizhou – Guangdong I HVDC System

为解决贵广Ⅰ回直流输电系统因阀基电子设备(VBE)故障在线处理时导致直流故障重启的问题,进行了相关的实验验证。结果显示:贵广Ⅰ回直流系统的VBE系统在线断开单组光发射模块电源开关引起换流失败是由于VBE设计上的缺陷引起,并非如生产厂家所说的"一种偶然现象"。基于研究结果,对改进VBE设计及其检修提出了建议。

A case of fault recovery in Guizhou – Guangdong ⅠHVDC System from VBE fault treatment is analyzed,and the relative experiments are carried out in this paper.The results show that the commutation failure of the HVDC system is caused by the power switch opening of single optical transmitter module in the VBE system,and this is actually due to a defect of the VBE design,not an accidental phenomena as what the VBE producer said.The study results in propositions for improving VBE design and its maintenance.