CVケーブルの絶縁診断支援エキスパートシステム

概要

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This paper describes insulation diagnosis technique of XLPE cables by means of expert system. The system mainly consists of two parts : simple diagnosis which applies the insulation resistance of cables in a live-wire state to management of deterioration tendency according to the data, and precision diagnosis which uses the values of insulating characteristics measured in a power-cut state to execute deliberate diagnosis. The system also includes a database function to accumulate the data derived from these diagnoses. As to the criterion for insulation deterioration, it acquires knowledge for its decision through hearing from experts. Visually-observed deterioration judgment is considered to aid further deterioration judgment. The system is constructed on MS-DOS running on a personal computer. The inference for insulation property grades is executed by backward reasoning of "hypothesis-verification" type implemented in OPS83. Fuzzy inference is adopted to evaluate the deterioration according to the criterion value. Since the result of insulation judgment obtained by the present system is much the same as that by experts, it is concluded that the system is confirmed in practicability.
東海大学の論文