黑龙江科技信息
黑龍江科技信息
흑룡강과기신식
HEILONGJIANG SCIENCE AND TECHNOLOGY INFORMATION
2012年
2期
70-70
,共1页
失磁保护动作%事故停机%控制流程
失磁保護動作%事故停機%控製流程
실자보호동작%사고정궤%공제류정
loses magnetism protection operation%accident tripping%control process
本文对沙溪口#01机组失磁保护（功率方向元件）动作事故停机从保护、励磁、调速器等专业逐一排查,确定是由于监控开机控制程序不够完善,在监控系统进行减负荷操作后＂减有功＂信号一直保持,导致#01机组有功迅速减到零,无功进相后功率方向角落入功率方向动作区内机组动作停机。
本文對沙溪口#01機組失磁保護（功率方嚮元件）動作事故停機從保護、勵磁、調速器等專業逐一排查,確定是由于鑑控開機控製程序不夠完善,在鑑控繫統進行減負荷操作後＂減有功＂信號一直保持,導緻#01機組有功迅速減到零,無功進相後功率方嚮角落入功率方嚮動作區內機組動作停機。
본문대사계구#01궤조실자보호（공솔방향원건）동작사고정궤종보호、려자、조속기등전업축일배사,학정시유우감공개궤공제정서불구완선,재감공계통진행감부하조작후＂감유공＂신호일직보지,도치#01궤조유공신속감도령,무공진상후공솔방향각락입공솔방향동작구내궤조동작정궤。
The operating accident tripping of loses magnetism protection（power directional element） to Unit #01 in ShaXikou plant was investigated from protection,excitation,velometer and so on in the paper.The imperfect starting monitor and control control procedure was determined to be the cause.After the load shedding was run the signal of active power shedding would be kept,which would result the active power of Unit #01 to reduce to zero rapidly.Then after reactive power led in the phase,power angle would enter the power direction operating area and unit would operate to be off.
