Reduced Order Model of A Lumped Parameter Frequency Dependent Transmission Line

被引：1
|
作者：
Gurrala, Gurunath [1 ]
Mukherjee, Pritam [1 ]
Challa, Kiran Kumar [1 ]
机构：
[1] Indian Inst Sci, Dept Elect Engn, Bangalore, Karnataka, India
来源：
2019 9TH INTERNATIONAL CONFERENCE ON POWER AND ENERGY SYSTEMS (ICPES) | 2019年
关键词：
Frequency dependent transmission line model; lumped parameter model; rational functions; vector fitting algorithm; ELECTROMAGNETIC TRANSIENTS;
D O I：
10.1109/icpes47639.2019.9105401
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Accurately fitting rational functions to the frequency response of modal impedances is very crucial for including frequency dependency in lumped parameter models of transmission lines. Vector fitting is widely used for fitting rational functions to the frequency response of modal impedances and then a RL equivalent circuit is obtained from rational functions to get lumped parameter transmission line model in the modal domain. A single-step method is proposed in this paper to directly fit a R-L equivalent circuit to the frequency response of modal impedances. A close enough fitting is achieved with lesser number of passive elements using the proposed method. This method is validated by comparing its EMTP-RV simulation results for a 3-phi 220kV line with cascaded constant lumped parameter pi-model and the standard frequency dependent line of EMTP-RV.
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页数：6
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