TRANSIENT RECOVERY VOLTAGE MEASURING DEⅥCE, TRANSIENT RECOVERY VOLTAGE MEASURING METHOD, AND RECORDING MEDIUM

摘要

By using the waveform transformation based on the proportional value of the time from the origin, a common tangent line between the ridge portion existing from the origin to the tangent value and the ridge portion corresponding to the tangent value is easily generated. A waveform converting section (12) for converting the transient recovery voltage waveform based on a proportional value obtained by multiplying a time from the origin by a proportional constant, a storage section (20) for storing a transient recovery voltage waveform including multiple frequencies, In the waveform, until the two points at which the maximum value becomes equal are determined by the waveform determining section 13 and the waveform determining section 13 that determine two points at which the maximum value becomes equal, An arithmetic unit 122 for adjusting the proportional constant; a contact detection unit 14 for obtaining two points of the transient recovery voltage waveform corresponding to the two points determined by the wave height determination unit 13; And a tangential line generating section 15 for generating a first tangent line passing therethrough.