MODELING OF NONLINEAR RAIL IMPEDANCE IN AC TRACTION POWER-SYSTEMS

被引：19
作者：
HILL, RJ
CARPENTER, DC
机构：
[1] University of Bath, School of Electrical Engineering, Bath, BA2 7AY, Claverton Down
来源：
IEEE TRANSACTIONS ON POWER DELIVERY | 1991年 / 6卷 / 04期
关键词：
D O I：
10.1109/61.97717
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：
Nonlinearity in the internal self-impedance of railroad rail can give rise to power frequency harmonics in traction systems. Limiting case analytical models of rail impedance, based on linear complex permeability and complete saturation, are compared with measurements for currents to 800A and frequencies to 10 kHz. The results show that for accurate representation an effective permeability of the material must be defined by prior modelling of the eddy current flux distribution within the rail iron. The usual assumption of rail internal self-impedance invariance with current is shown to be unrealistic.
引用
收藏
页码：1755 / 1761
页数：7
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