落雷電流波形推定方法および落雷電流波形推定装置

Japanese Patent JP7133442

B2

To provide a highly accurate lightning current waveform estimation method and a lightning current waveform estimation device, based on measured values of a radiated magnetic field or a radiated electric field from a lightning strike.SOLUTION: The method of estimating a lightning current waveform from discrete data of measured values of a magnetic field waveform of a radiated magnetic field or an electric field waveform of a radiated electric field due to a lightning strike, includes the steps of: replacing a time partial differential term of a current with an expression of a difference in a calculation formula of a value at a distant observation point of the magnetic field waveform or the electric field waveform generated from a current of the lightning strike by the Maxwell's equation; separating a discrete data term that is the earliest in time from an integral term of the current to obtain a basic formula for calculating a lightning current waveform including the integral term in a height direction; and sequentially integrating in the height direction from beginning data of the discrete data of the measured magnetic field waveform or electric field waveform in the basic formula to obtain the lightning current waveform.SELECTED DRAWING: Figure 1

Kazuo Shinjo
Hironao Kawamura

JP2018212208A

September 08, 2022

November 12, 2018

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Hokuriku Electric Power Co., Inc.

G01W1/00; G01R29/00; G01R29/08; G01W1/16

JP6284566A
JP11295365A

WO2014077337A1
US20110095763

Patent Business Corporation Minami Patent Office

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