Deconvolution Technique for Analysing the Lightning Impulse Voltage Measuring System

Abstract

This paper proposes a new numerical deconvolution algorithm, which has advantage in speed over other two techniques. In the paper, three basic algorithms have been examined to analyse standard lightning impulse voltage from the given output response and unit step response of a measuring system. Full and front-chopped impulses are assumed as an input voltage. The numerically reconstructed inputs are compared with the analytical impulses. The proposed fast method, not precise enough under certain circumstances, is studied a cause of its error and its algorithm is modified to avoid cancellation error. The modified deconvolution method has been tested in possible circumstances and proven most accurate amongst three.