Application of Kernel C-Means Clustering and Dempster-Shafer Theory of evidence in power transformers fault diagnosis

Transformers fault diagnosis plays a vital role in running security and reliability. The detected information is collected from the disperse sensor, which is lack of the data fusion analysis and easily lead to decision error and leak. A model of oil-immersed transformer fault diagnosis based on the collaborative method of Kernel C-Means Clustering (KCM) and multi-source information data fusion is presented. The basic idea is that the trained samples are clustered first by using KCM, and then the Dempster-Shafer theory of evidence Fusion method is used to train the chosed sample, and decide the transformer fault. The result of the method shows that the above method can reduce the uncertainty efficiently and have a good performance of transformer fault diagnosis.