Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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发电机裂相横差保护报警分析与处理

来源:电工电气发布时间:2020-12-19 10:19 浏览次数:676
发电机裂相横差保护报警分析与处理
 
陈熙平,张杰,张强
(雅砻江流域水电开发有限公司,四川 成都 610056)
 
    摘 要:介绍了发电机裂相横差保护报警现场检查方法,分析了裂相横差保护报警原因,确认报警原因为发电机中性点电流互感器(CT)故障。对CT故障原因进行分析可知,是运行环境温度长期过高,CT绝缘等级不够,且设备本身存在质量问题等因素造成。对该故障提出了现场改善措施,运行实践表明,该改善措施效果明显。
    关键词:中性点电流互感器(CT);裂相横差;保护报警;故障
    中图分类号:TM312;TM452     文献标识码:B     文章编号:1007-3175(2020)12-0039-04
 
Analysis and Treatment of Generator Split-Phase Transverse Differential Protection Alarm
 
CHEN Xi-ping, ZHANG Jie, ZHANG Qiang
(Yalong River Hydropower Development Co.,Ltd, Chengdu 610056, China)
 
    Abstract: This paper introduces the on-site inspection method of the generator split-phase transverse differential protection alarm, analyzes the cause of the alarm, and confirms that the cause of the alarm is the generator neutral current transformer (CT) fault. By analyzing the causes of CT fault, the operating environment temperature is too high for a long time, the CT insulation class is low, and the equipment itself has quality problems. The field improvement measures are put forward for the fault, and the operation practice shows that the improvement measures are effective.
    Key words: neutral current transformer; split-phase transverse differential; protection alarm; fault
 
参考文献
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