摘要
为了解一起换流阀冷却系统模块超差异常报警信号问题,对换流阀冷却系统关于此问题的相关报警进行现场处理、分析、告警信号模拟研究,对本站采用的换流阀冷却系统程序、原理进行检测分析,研究结果表明,此次换流阀冷却系统的模块超差等异常告警信号是由于直流控制保护系统只检测到换流阀冷却系统上传的跳变信号造成的。当通信故障时恢复告警信号,在恢复通信以后,直流控制保护系统依然检测不到换流阀冷却系统的当前状态,保持原有告警信号的输出。最后结合本次事故处理过程及模块超差等异常报警信号产生的原因给出预防性的措施,为以后特高压换流站在换流阀冷却方面的的安全稳定运维提供借鉴。
In order to understand the abnormal alarm signal of the converter valve cooling system module out-of-tolerance,on-site processing,analysis,and simulation research on the alarm of the converter valve cooling system on this issue,and the converter valve cooling system program used in this station.The principle is tested and analyzed,and the research results show that the abnormal alarm signal of the converter valve cooling system module is caused by the DC control protection system only detecting the jump signal uploaded by the converter valve cooling system.When the communication fails,the alarm signal is restored.After the communication is restored,the DC control protection system still cannot detect the current state of the converter valve cooling system,and maintains the output of the original alarm signal.Finally,the preventive measures are given based on the accident handling process and the cause of abnormal alarm signals such as module out-of-tolerance,which provides a reference for the safe and stable operation and maintenance of the converter valve cooling of the UHV converter station in the future.
作者
赵伟杰
罗薇
陈文
甘涛
王小岭
ZHAO Weijie;LUO Wei;CHEN Wen;GAN Tao;WANG Xiaoling(Kunming Bureau of EHV Power Transmission Company China Southern Power Grid,Kunming 650000;Yunnan Energy Regulatory Office of National Energy Administration,Kunming 650000)
出处
《电气技术》
2021年第3期69-73,共5页
Electrical Engineering
关键词
换流阀
直流控保
换流阀冷却系统
模块超差
通信
converter valve
DC control and protection
converter valve cooling system
module out of tolerance
communication
