600MW汽轮发电机组励磁系统故障跳闸分析及处理措施  

Analysis of Excitation System Fault Trip of 600 MW Steam Turbine Generator Unit and Its Treatment

作　　者：潘海斌 石运兴 PAN Haibin;SHI Yunxing(Inner Mongolia Jinglong Electric Power Generation Co.,Ltd.,Ulanqab 012100,China)

机构地区：[1]内蒙古京隆发电有限责任公司,内蒙古乌兰察布012100

出　　处：《内蒙古电力技术》2020年第2期38-40,共3页Inner Mongolia Electric Power

摘　　要：某600 MW汽轮发电机组发生跳闸故障,判断跳闸原因为励磁调节器灭磁控制板或霍尔元件受到干扰后,保护系统误判断灭磁电阻投入触发灭磁条件,励磁系统故障造成发变组非电量保护动作,导致发变组跳闸联跳汽轮发电机组。提出了更换灭磁控制板、消除霍尔元件干扰磁场等处理方法。There is a fault on 600 MW steam turbine generator units. And the trip is caused by the disturbance on the de-excitation control board of the excitation regulator or Hall element. The protection system misjudges that de-excitation resistance is put into operation to trigger de-excitation condition. The failure of excitation system results in the action of non-electric quantity protection of generator-transformer units, which leads to the trip of the steam turbine generator units.The solutions such as replacing the de-excitation control board and eliminating the interference magnetic field of Hall element are presented.

关 键 词：600 MW汽轮发电机组 励磁系统 故障跳闸 灭磁电阻 霍尔元件 

分 类 号：TM621.6[电气工程—电力系统及自动化]