发电机PT慢熔造成的停机事故及应对措施研究  

Research on Shutdown Accidents Caused by Generator PT Slow Melting and Countermeasures

作　　者：靳玉祥 郭建斌 李瑞春 Jin Yu-xiang;Guo Jian-bin;Li Rui-chun

机构地区：[1]山西国锦煤电有限公司,山西交城030500 [2]晋控电力山西长治发电有限责任公司,山西潞州046000 [3]山西国金电力有限公司,山西文水033000

出　　处：《电力系统装备》2022年第1期90-92,共3页Electric Power System Equipment

摘　　要：保护装置对发电机出线电压进行采集时,需要经PT变换为标准二次侧电压,而PT发生慢熔故障,将直接引发保护动作,造成停机事故。基于此,把握事故带来的危害,结合实例对事故现象展开分析,通过事故调查、影响分析、过程分析可以确定动作逻辑,并围绕事故原因提出有效应对措施,能够降低事故发生概率,为类似情况处理提供参考。When the protection device collects the output voltage of the generator,it needs to be transformed into a standard secondary side voltage by PT.However,a slow-blow failure of the PT will directly trigger the protection action and cause a shutdown accident.Based on this,grasp the hazards caused by the accident,analyze the accident phenomenon in combination with examples,determine the action logic through accident investigation,impact analysis,and process analysis,and propose effective countermeasures around the cause of the accident,which can reduce the probability of accidents,and for similar situations Provide reference for processing.

关 键 词：发电机 PT慢熔 停机事故 

分 类 号：TM621[电气工程—电力系统及自动化]