A new method of determining the mean curve of lightning impulses according to IEC 60060-1
A new method of determining the mean curve of lightning impulses according to IEC 60060-1
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根据 IEC 60060-1 确定雷电冲击平均曲线的新方法
DOI:
10.1049/cp:19990511
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发表时间:
1999
影响因子:
3.1
通讯作者:
H. Borsi
中科院分区:
文献类型:
--
作者:
A. Brede;P. Werle;E. Gockenbach;H. Borsi
In this contribution a new method for the determination of mean curves of lightning impulses is presented. The method is in accordance with the actual standard IEC 60060-1 and based on mathematical curve fitting using the least mean square (LMS) error as quality criterion and the Gauss-Newton or the Levenberg-Marquardt algorithms in order to solve the nonlinear equations. The presented procedure reproduces measured lightning impulses in a more suitable way than conventional functions and is therefore able to determine mean curves of standard lightning impulses as well as of lightning impulses superimposed by oscillations or overshoots. A comparison of results obtained with the described method and other curve fittings by using the IEC-TDG and measured data produced by a special generating circuit shows that the new method is more favourable.