某换流站调相机轴振保护跳机问题分析及处理  

Analysis and Treatment of Tripping Problem of Phase Modulator Shaft Vibration Protection in a Converter Station

作　　者：王正伟 马春安 周军 石生超 祁富志 WANG Zhengwei;MA Chunan;ZHOU Jun;SHI Shengchao;QI Fuzhi

机构地区：[1]国网青海省电力公司电力科学研究院,青海西宁810008

出　　处：《青海电力》2023年第4期51-56,共6页Qinghai Electric Power

摘　　要：某换流站年检期间,进行第三大组交流滤波器母线充电操作时,1号调相机发生跳机事故,通过对调相机分散控制系统(Distributed Control System,简称DCS)、汽轮机监视仪表系统(Turbine Supervisory Instruments System,简称TSI)信号干扰排查及调相机振动干扰测试,判断调相机跳机事故原因为二次屏柜中本体信号受到了较为严重的干扰,并且为调相机振动保护系统二次回路接线及装置接地提出了抗干扰措施。During the annual inspection of a converter station,an incident occurred where the No.1 modulator experienced a jump accident while charging the busbar of the third largest group of AC filters.After conducting investigations into signal interference from the Distributed Control System(DCS)and Turbine Supervisory Instruments system(TSI),as well as performing vibration interference tests on the modulator,it was determined that the jump accident was caused by severe ontology signal interference in the secondary screen cabinet.Consequently,proposed measures for enhancing anti-interference capabilities were put forth for both secondary circuit wiring and device grounding within the modulator’s vibration protection system.

关 键 词：调相机 二次系统 信号干扰 接地网 

分 类 号：TM342[电气工程—电机]