Comparison of Rational Krylov and Vector Fitting in Transient Simulation of Transmission Lines and Cables

Aziz Gueye; Ilhan Kocar; Emmanuel Francois; Jean Mahseredjian

doi:10.1109/TPWRD.2023.3272927

Comparison of Rational Krylov and Vector Fitting in Transient Simulation of Transmission Lines and Cables

Aziz Gueye, Ilhan Kocar, Emmanuel Francois, Jean Mahseredjian

Research output: Journal article publication › Journal article › Academic research › peer-review

3 Citations (Scopus)

Abstract

This paper presents stringent comparisons between Vector Fitting (VFIT), Relaxed Vector Fitting (R-VFIT) and Rational Krylov Fitting (RKFIT) techniques in the fitting of transmission line and cable functions to rational forms while accounting for the frequency dependence of electrical parameters. The fitting procedures encapsulate new solution strategies to improve fitting performance. Various case studies are presented to assess the performance of RKFIT in terms of model order reduction, passivity violation and computing times. In addition, the use of RKFIT in obtaining the frequency dependent cable model (FDCM) is demonstrated for the first time together with a resolved case study that showed unstable behavior with the universal line model (ULM) methodology.

Original language	English
Article number	10115497
Pages (from-to)	3333-3341
Number of pages	9
Journal	IEEE Transactions on Power Delivery
Volume	38
Issue number	5
DOIs	https://doi.org/10.1109/TPWRD.2023.3272927
Publication status	Published - 1 Oct 2023

Keywords

Cable constants
electromagnetic transients
frequency dependent cable model (FDCM)
line constants
rational krylov approximation
universal line model (ULM)

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering

More information

10.1109/TPWRD.2023.3272927

Cite this

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abstract = "This paper presents stringent comparisons between Vector Fitting (VFIT), Relaxed Vector Fitting (R-VFIT) and Rational Krylov Fitting (RKFIT) techniques in the fitting of transmission line and cable functions to rational forms while accounting for the frequency dependence of electrical parameters. The fitting procedures encapsulate new solution strategies to improve fitting performance. Various case studies are presented to assess the performance of RKFIT in terms of model order reduction, passivity violation and computing times. In addition, the use of RKFIT in obtaining the frequency dependent cable model (FDCM) is demonstrated for the first time together with a resolved case study that showed unstable behavior with the universal line model (ULM) methodology.",

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Comparison of Rational Krylov and Vector Fitting in Transient Simulation of Transmission Lines and Cables

Abstract

Keywords

ASJC Scopus subject areas

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