基于灰色聚类分析的充油电力变压器绝缘故障诊断的研究

Study on Fault Diagnosis of Insulation of Oil-immersed Transformer Based on Grey Cluster Theory

油中溶解气体分析是判别变压器内部绝缘状况及发现内部故障的重要手段。本文采用灰色系统理论对变压器绝缘故障进行了分析 ,进一步提出了一种变压器绝缘故障诊断的灰色聚类模型及分析方法 ,并以范例分析验证了该模型能够应用于分析故障类型和确定故障位置 ,分析结果同时表明本文方法是有效的并具有良好的应用前景。

Dissolved gas analysis(DGA)is an important method to judge the insulation condition and find out fault inside transformer.As transformer can be considered as a complex grey system,this paper analyses transformer insulation fault with grey system theory.Furthermore,this paper brings forward a gray cluster model and the relevant method for insulation fault diagnosis.According to analysis to some fault examples,it is testified that the proposed model can be used for analyzing fault pattern and locating the fault position.Meanwhile,analysis results show the method in this paper is valid and possesses good prospect of wide application.