变压器异常失压的分析与改进研究  

Analysis and Improvement of Transformer Abnormal Loss of Voltage

作　　者：仝磊 范利伟 李强府 赵斌 TONG Lei;FAN Liwei;LI Qiangfu;ZHAO Bin(Henan Anyang Chemical Industry Limited Liability Company,Anyang,Henan 455000,China)

机构地区：[1]河南安阳化学工业集团公司,河南安阳455000

出　　处：《自动化应用》2023年第1期46-47,52,共3页Automation Application

摘　　要：变电站内一起因干式变压器绕组的测温元件导致的相间短路是一类典型事件,涉及干式变压器制造规范、该变压器的非电量保护接线、柜内电流互感器动热稳定性不足导致该开关柜拒动等因素,致使故障扩大越级跳闸。找出原因后,对其进行了研究改进,消除了故障,保障了供电系统的稳定运行。The interphase short circuit caused by the temperature measuring element of a dry-type transformer winding in the substation is a typical event,which involves the manufacturing specification of dry-type transformer,the non-electric quantity protection wiring of the transformer,and the inadequately dynamic and thermal stability of the current transformer in the cabinet leading to the refusal of the switch cabinet to operate,thus,causing the fault to expand and skip the level of tripping.After finding out the reasons,the system was improved,the fault was eliminated,and the stable operation of the power supply system was ensured.

关 键 词：感温元件 变压器故障 母线失压 动稳定性 

分 类 号：TM564.1[电气工程—电器]