广东电力2026，Vol.39Issue(3)：61-71,11.DOI:10.3969/j.issn.1007-290X.2026.03.007
直流闭锁暂态过电压机理与阀基电子设备逻辑优化
Mechanism of Transient Overvoltage During DC Blocking and Optimization of Valve Base Electronics Logic
摘要
Abstract
To address the abnormal operation of overvoltage protection during the valve control retrofit debugging of the Tian-Guang HVDC project,this paper conducts a comprehensive analysis of the event development process by examining the converter valve triggering and protection trip logic,and establishing an equivalent DC circuit model.The results indicate that the transient overvoltage during DC blocking was caused by abnormal conduction of the rectifier-side converter valve,rooted in a logic defect within the valve control system that allowed trigger pulses to be issued even after blocking.To resolve this,a logic optimization strategy is proposed to actively send cut-off pulses upon the disappearance of the deblocking signal.Using the RTDS(Real-Time Digital Simulator)hardware-in-the-loop platform of the Tian-Guang HVDC project,the fault was reproduced and the effectiveness of the proposed measure was verified.Both simulation and field application demonstrate that the optimization effectively prevents false triggering of the converter valve and overvoltage incidents.This study provides a practical reference for optimizing control logic and ensuring the safe and stable operation of DC engineering.关键词
阀基电子设备/直流过电压保护/异常动作/晶闸管电子板/策略优化/触发脉冲Key words
valve base electronics(VBE)/overvoltage protection/abnormal operation/thyristor electronics board/strategy optimization/trigger pulse分类
信息技术与安全科学引用本文复制引用
武霁阳,彭光强,陈礼昕..直流闭锁暂态过电压机理与阀基电子设备逻辑优化[J].广东电力,2026,39(3):61-71,11.基金项目
中国南方电网有限责任公司科技项目(CGYKJXM20240106) （CGYKJXM20240106）
