Sensitivity Analysis for Estimating the Salt-induced Damage to Voltage Current Transformer due to Typhoon

Abstract

The purpose of this paper is to analyze the correlation relationship between the salt satin environment and the actual damage of electric power distribution equipment caused by existing two typhoons including the 2012 typhoon No.4 (T1204) and the 2011 typhoon No.15 (T1115). The T1204 caused salt stain damage to voltage current transformer (VCT) while the T1115 caused no damage to VCT installed in a same target area. In this paper, the salt stain environment during two typhoons, which includes the maximum wind speed, the accumulated rainfall, and Na⁺ flux, is evaluated by a weather reproduction simulation to discuss the causal relationship between the salt stain environment and the VCT damage. As a result, a damage evaluation model is proposed to evaluate the salt-induced damage risk potential of the VCT for the reasonable restoration activity.