Being the system which presumes the relic insulating life of the relic insulating life presumption

摘要

PROBLEM TO BE SOLVED: To acquire a system capable of estimating the remaining insulation life duration of high pressure rotary machines quantitatively.;SOLUTION: The remaining insulation life duration estimating system is equipped with a known database 1 for the high pressure rotary machine 100, a means 2 acquiring the insulation data including the present insulation resistance value Ri or the dielectric loss factor tan δ_i for the high pressure rotary machine 100, a statistical multiple regression analysis means 3 estimating a gradient parameter P of the data for time lapse by performing multiple regression analysis of the data base 1 statistically for each insulation index separately, a means 4 determining the present level of the insulation data for each reliability of a plurality of steps, based on the insulation data and the gradient parameter P, and a remaining insulation life duration estimating means 5 estimating the remaining insulation life duration of the high pressure rotary machine 100 based on the gradient parameter P and the present level. The remaining insulation life duration estimating means 5 estimates a period until the insulation data for each reliability over future elapsed operation years reaches a threshold of non-destructive insulation data predicted to aggravate along the gradient parameter P to breakdown, as a remaining insulation life duration.;COPYRIGHT: (C)2006,JPO&NCIPI