Analyzing effect of moisture content in the transformer oil using weibull technique

Abu Bakri, Nurul Afiza (2015) Analyzing effect of moisture content in the transformer oil using weibull technique. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Power transformer is an important electrical equipment in power system. Fault happen in transformer when insulation in a poor condition. Failure in insulation might be happen when moisture or air ingress in the insulation and its affect the insulating of transformer. The aim of this project is to determine the moisture level of in service transformer and to categorize the condition of moisture according to the standard IEEE C57.106-2006. By differ to determine the effect of moisture in liquid insulation and to analyze the data by using weibull method. Weibull method is used to analyze the data life with using various parameters. The research is to compare the weibull plot between excel, reliasoft and least regression. The technique was used in the research is a weibull in life data analysis. In this method, contain of data life is a failure and successful. The data is consists of age and the condition of the moisture level. From the age of transformer, it can obtain the value of median rank to plot graph. All of this parameter is considered to analyze the data and to determine whether the end life of transformer is depends on the quantity of the moisture. The consistency of each data is based on the interpretation made from the analysis of 33/11kV,15MVA & 30MVA power transformer.

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