Automatic Decision Making System of Timing for Washing Insulators in Coastal Substation: Multi-Event Matching Prediction of Insulator Pollution

Abstract

Insulators in coastal substation are polluted due to salty wind blowing from seaside. Hazardous level of pollution deposit causes higher leakage current under damp condition, resulting in system blackout and dam-age to substation due to flashover. To avoid those accidents, the insulators are frequently washed using much amount of pure water. This research developed a computer system for automatic decision washing timing of polluted insulators in substations with easy operation. In the computer system, newly proposed prediction method of pollution in coastal insulators called multi-event matching prediction is used to make accurate decision of timing for insulator washing.