Through the fault of 110kV MY line in a substation,the trip of line protection action on both sides of the line,at the same time,the trip of 110 kV double busbar protection in the substation due to the wrong action of MY line CT ratio,resulting in the accident expansion;Through the analysis of the cause of the incident,the problem is finally determined,through the analysis and diagnosis of the incident to further grasp the analysis of Protection Maloperation event,and to the future acceptance,operation and maintenance matters for attention to put forward corresponding recommendations.
关键词
母线保护/CT变比/保护误动/原因分析
Key words
bus protection/CT ratio/protection maloperation/cause analysis
维普
万方数据