Partitioned Fitting and DC Correction for the Simulation of Electromagnetic Transients in Transmission Lines/Cables

Miguel Cervantes; Ilhan Kocar; Jean Mahseredjian; Abner Ramirez

doi:10.1109/TPWRD.2018.2849854

Partitioned Fitting and DC Correction for the Simulation of Electromagnetic Transients in Transmission Lines/Cables

Miguel Cervantes
, Ilhan Kocar
, Jean Mahseredjian
, Abner Ramirez

The Hong Kong Polytechnic University

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

19 Citations (Scopus)

Abstract

This letter proposes a two-stage fitting procedure for transmission line/cable functions in which low-frequency samples are exclusively considered. At the first stage, fitting is performed for a reduced band by excluding frequencies close to DC. Reducing the fitting range improves the numerical conditioning of the overall system of equations and relieves fitting. The second stage consists of finding a correction term for the out-of-band samples close to DC. The procedure, when used with the recently introduced frequency-dependent cable model approach, allows modeling transmission lines and cables with improved fitting precision at low frequencies. Overall, the new approach is called frequency-dependent model (FDM) with DC correction, i.e., FDM/DC. It can be used to complement the prevailing universal line model in two ways: for reducing the integration errors due to unbalanced fitting and for improving the precision of DC response. Two examples are provided to demonstrate the utility of the new approach.

Original language	English
Article number	8399543
Pages (from-to)	3246-3248
Number of pages	3
Journal	IEEE Transactions on Power Delivery
Volume	33
Issue number	6
DOIs	https://doi.org/10.1109/TPWRD.2018.2849854
Publication status	Published - Dec 2018

Keywords

electromagnetic transients
Frequency dependent line models
HVDC transmission lines

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering

More information

10.1109/TPWRD.2018.2849854

Cite this

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title = "Partitioned Fitting and DC Correction for the Simulation of Electromagnetic Transients in Transmission Lines/Cables",

abstract = "This letter proposes a two-stage fitting procedure for transmission line/cable functions in which low-frequency samples are exclusively considered. At the first stage, fitting is performed for a reduced band by excluding frequencies close to DC. Reducing the fitting range improves the numerical conditioning of the overall system of equations and relieves fitting. The second stage consists of finding a correction term for the out-of-band samples close to DC. The procedure, when used with the recently introduced frequency-dependent cable model approach, allows modeling transmission lines and cables with improved fitting precision at low frequencies. Overall, the new approach is called frequency-dependent model (FDM) with DC correction, i.e., FDM/DC. It can be used to complement the prevailing universal line model in two ways: for reducing the integration errors due to unbalanced fitting and for improving the precision of DC response. Two examples are provided to demonstrate the utility of the new approach.",

keywords = "electromagnetic transients, Frequency dependent line models, HVDC transmission lines",

author = "Miguel Cervantes and Ilhan Kocar and Jean Mahseredjian and Abner Ramirez",

note = "Funding Information: Manuscript received November 21, 2017; revised April 15, 2018; accepted June 7, 2018. Date of publication June 28, 2018; date of current version November 20, 2018. This work was supported by NSERC IRC in multi time-frame simulation of transients for large scale power systems. Paper no. PESL-00231-2017. (Corresponding author: Ilhan Kocar.) M. Cervantes, I. Kocar, and J. Mahseredjian are with the Department of Electrical Engineering, Polytechnique Montreal, Montreal, QC H3T 1J4, Canada (e-mail:, [email protected]; ilhan.kocar@ polymtl.ca; [email protected]). Publisher Copyright: {\textcopyright} 1986-2012 IEEE.",

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N1 - Funding Information: Manuscript received November 21, 2017; revised April 15, 2018; accepted June 7, 2018. Date of publication June 28, 2018; date of current version November 20, 2018. This work was supported by NSERC IRC in multi time-frame simulation of transients for large scale power systems. Paper no. PESL-00231-2017. (Corresponding author: Ilhan Kocar.) M. Cervantes, I. Kocar, and J. Mahseredjian are with the Department of Electrical Engineering, Polytechnique Montreal, Montreal, QC H3T 1J4, Canada (e-mail:, [email protected]; ilhan.kocar@ polymtl.ca; [email protected]). Publisher Copyright: © 1986-2012 IEEE.

PY - 2018/12

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N2 - This letter proposes a two-stage fitting procedure for transmission line/cable functions in which low-frequency samples are exclusively considered. At the first stage, fitting is performed for a reduced band by excluding frequencies close to DC. Reducing the fitting range improves the numerical conditioning of the overall system of equations and relieves fitting. The second stage consists of finding a correction term for the out-of-band samples close to DC. The procedure, when used with the recently introduced frequency-dependent cable model approach, allows modeling transmission lines and cables with improved fitting precision at low frequencies. Overall, the new approach is called frequency-dependent model (FDM) with DC correction, i.e., FDM/DC. It can be used to complement the prevailing universal line model in two ways: for reducing the integration errors due to unbalanced fitting and for improving the precision of DC response. Two examples are provided to demonstrate the utility of the new approach.

AB - This letter proposes a two-stage fitting procedure for transmission line/cable functions in which low-frequency samples are exclusively considered. At the first stage, fitting is performed for a reduced band by excluding frequencies close to DC. Reducing the fitting range improves the numerical conditioning of the overall system of equations and relieves fitting. The second stage consists of finding a correction term for the out-of-band samples close to DC. The procedure, when used with the recently introduced frequency-dependent cable model approach, allows modeling transmission lines and cables with improved fitting precision at low frequencies. Overall, the new approach is called frequency-dependent model (FDM) with DC correction, i.e., FDM/DC. It can be used to complement the prevailing universal line model in two ways: for reducing the integration errors due to unbalanced fitting and for improving the precision of DC response. Two examples are provided to demonstrate the utility of the new approach.

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Partitioned Fitting and DC Correction for the Simulation of Electromagnetic Transients in Transmission Lines/Cables

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Keywords

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