Frequency-Dependent Modeling of Transformer Winding Impedance From R(ω)/L Measurements

被引：8

作者：

Chiesa, Nicola ^{[1
]}

Gustavsen, Bjorn ^{[1
]}

机构：

[1] SINTEF Energy Res, N-7465 Trondheim, Norway

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2014年 / 29卷 / 03期

关键词：

Electromagnetic transients; Electromagnetic Transients Program (EMTP); frequency response; transformer;

D O I：

10.1109/TPWRD.2014.2301597

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We describe a practical modeling approach for including the frequency dependency of transformer winding resistance in Electromagnetic Transients Program-type simulation tools, based on typical curves of R(omega)/L ratios. From the given resistance component, the inductance component is calculated via Kramers-Kronig dispersion relations. The resulting impedance is subjected to low-order rational approximation impedance by a Foster equivalent circuit. The proposed model can be easily applied to any transformer in the range of 20-500 MVA by rescaling the given Foster circuit parameters by the 50-Hz winding resistance.

引用

页码：1511 / 1513

页数：3

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