Quick Evaluation Method for Electrical Life of XLPE Insulation Material Used in HV Cables
In order to meet the demand for quick life evaluation of XLPE insulation materials for HV cables in China,an innovative life index comparison evaluation method has been proposed.The evaluation of the electrical life index n value in this evaluation method is based on the assumption that the cumulative breakdown probability of the sample cable conforms to the Weibull distribution function,and the experimental principle adopts the approximate simplification method.Through comparing the life index n value of HV cables of the same model and specification made on the same production line by the sample to be evaluated of XLPE insulation material with unknown electrical life and the reference sample of XLPE insulation material with known electrical life after long-term use,it is easy,fast,and accurate to evaluate the life of XLPE insulation material for HV cables with unknown electrical life.Based on relevant case studies,it is shown that this evaluation method has the advantages of low experimental cost,high evaluation efficiency,and wide applicability.
万方数据
维普
