Title :
Method of estimating the remaining life of the 10 kV XLPE cable operated 10 years
Author :
Jiqun, Chen ; Shoutai, Wang
Author_Institution :
Shanghai BAO-Steel Corp., Shanghai, China
Abstract :
A used XLPE cable was cut into more than ten sections as samples for testing, in addition to a new sample of XLPE. These samples of each cable were divided into two groups. A series of high-voltage tests on samples were done one by one. The test voltage of each group of samples was raised step by step until breakdown. It is determined, by the method of linear regression analysis, that the statistical distribution of breakdown voltages of each group of samples follows Weibull´s distribution. According to the ratio of average breakdown voltages for the used and the new cable samples in testing, the operating years, the ageing rate and the remaining life of the used cable insulation are estimated in this paper
Keywords :
Weibull distribution; XLPE insulation; electric breakdown; insulation testing; life testing; power cable insulation; power cable testing; statistical analysis; 10 kV; 10 y; Weibull distribution; XLPE cable; ageing rate; breakdown; breakdown voltage; cable insulation; high-voltage tests; life testing; linear regression analysis; statistical distribution; test voltage; testing; Aging; Breakdown voltage; Insulation testing; Life estimation; Life testing; Linear regression; Power cable insulation; Power cables; Statistical distributions; Weibull distribution;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2000. Proceedings of the 6th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
0-7803-5459-1
DOI :
10.1109/ICPADM.2000.875666
