| 摘要 |
<P>PROBLEM TO BE SOLVED: To assess accurately a remaining life of an insulator provided on a power receiving/distributing device. <P>SOLUTION: This method for assessing remaining life of the power receiving/distributing device equipped with the insulator includes processes of: (a) providing beforehand a sensor insulator composed of a material which is the same as or equivalent to the insulator which is an object to be assessed on the power receiving/distributing device; (b) measuring successively a surface resistivity on the surface of the sensor insulator and a humidity near the surface; (c) updating successively the first correlation which is a correlation between the surface resistivity measured in process (b) and the humidity measured in process (b); (d) calculating a surface resistivity B corresponding to a prescribed humidity A based on the first correlation updated in process (c), and updating the second correlation which is a correlation between the calculated surface resistivity B and the number of years of use D; and (e) determining the remaining life of the power receiving/distributing device based on the second correlation updated in process (d). <P>COPYRIGHT: (C)2009,JPO&INPIT |
