状态参数分散度对油纸绝缘状态的评估

为了研究油纸绝缘的老化状态参量与老化状态的对应关系,以及如何准确选择反映状态的参量,对油纸绝缘进行电热联合老化实验.基于老化实验的数据,分析了在同一老化因子下各个老化特征参量的分散度,同时应用多参数诊断方法探讨这些参量如何准确反映绝缘状态.结果表明,在适当筛选参量之后,多参量诊断会在一定程度上提高绝缘状态评价的准确性,有利于优化计算和提高状态评估的准确性.

The assessment of the condition parameter deviation degree on oil-paper insulation state

In order to explain how exactly aging characteristics could reflect the aging status and how to choose the precise characteristics to make multi-parameter diagnosis,the thermal and electrical accelerated aging experiments of oil-paper insulation was put into practice.On the basis of aging test data,the deviation degrees of aging characteristic parameters under the same aging factors were studied,and the multi-parameter diagnosis method was put forward.The conclusions were made that multi-parameter method could benefit the varacity of the diagnosis,also,the proper classification of data was suggested to make diagnosis more precise.