申请人:Mitsubishi Electric Corporation
公开号:EP2579283A1
公开(公告)日:2013-04-10
Provided is a diagnosis method for an oil-filled electrical apparatus (1), which is for evaluating the degree of danger of copper sulfide being generated within the oil-filled electrical apparatus (1), comprising: a first step for detecting a specific compound contained within insulating oil (55) inside the oil-filled electrical apparatus (1); a second step for evaluating the possibility of copper sulfide being generated inside the oil-filled electrical apparatus (1), on the basis of the result detected by the first step; and a third step for diagnosing the degree of danger of a malfunction occurring in the oil-filled electrical apparatus (1), on the basis of the evaluation result obtained in the second step. The specific compound contains dibenzyl disulfide and/or a reaction product of a radical resulting from dibenzyl disulfide, and
di-tert-butyl-p-cresol and/or a reaction product of a radical resulting from di-tert-butyl-p-cresol, or, di-tert-butyl-phenol and/or a reaction product of a radical resulting from di-tert-butyl-phenol.
提供了一种用于充油电气设备(1)的诊断方法,该方法用于评估充油电气设备(1)内部产生硫化铜的危险程度,包括: 第一步骤,用于检测充油电气设备(1)内部绝缘油(55)中所含的特定化合物; 第二步骤,用于评估充油电气设备(1)内部产生硫化铜的可能性:第一步,检测充油电气设备 (1) 内部绝缘油 (55) 所含的特定化合物;第二步,根据第一步检测的结果,评估充油电气设备 (1) 内部产生硫化铜的可能性;以及第三步,根据第二步获得的评估结果,诊断充油电气设备 (1) 发生故障的危险程度。特定化合物包含二苄基二硫和/或由二苄基二硫产生的自由基的反应产物,以及
二叔丁基对甲酚和/或二叔丁基对甲酚产生的自由基的反应产物,或 二叔丁基苯酚和/或二叔丁基苯酚产生的自由基的反应产物。