### Abstract

Overshoot magnitude is defined by the difference between the extreme value of the recorded voltage curve and the maximum value of the base curve. And relative overshoot magnitude is defined by the ratio of the overshoot magnitude to the maximum value of the base curve. Therefore the estimation of the maximum value of the base curve is very important to determine the relative overshoot magnitude. This paper deals with the determination of base curve and proposes the calculation procedure of the base curve based on the analysis of oscillating waveform. Examples illustrate with the difference between the definitions of relative overshoot magnitude.

Original language | English |
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Pages (from-to) | 9+809-814 |

Journal | IEEJ Transactions on Power and Energy |

Volume | 129 |

Issue number | 6 |

Publication status | Published - 2009 Jul 30 |

### Keywords

- Base curve
- Lightning impulse test
- Oscillating impulse voltage
- Overshoot
- Waveform approximation
- Waveform parameter

### ASJC Scopus subject areas

- Energy Engineering and Power Technology
- Electrical and Electronic Engineering

## Cite this

*IEEJ Transactions on Power and Energy*,

*129*(6), 9+809-814.