韶钢宽板厂主变差动保护动作的故障分析及改进措施  

Failure Analysis of Differential Protection Act of Main Transformer in Shao-Gang Broad Plate Factor and Measures for Improvement

作　　者：戴毅 王兴龙 黄璐 

出　　处：《电工技术》2006年第10期10-12,共3页Electric Engineering

摘　　要：介绍美国SEL-587差动继电器在韶钢宽板主变应用的一般技术性能,并阐述了主变差动保护动作后的判断方法、动作原因分析以及改进措施。This paper introduces common technical performance of US SEL-587 differential relay used in broad plate main transformer of Shao-Gang, summarizing method of judgment, act reason analysis and measures for improvement following the main transformer differential protection act.

关 键 词：差动继电器 相量图 差动动作电流 差动制动电流 折线率 

分 类 号：TM581.4[电气工程—电器]