Super-Positioning of Voltage Sources for Fast Assessment of Wide-Area Thévenin Equivalents

Jakob Glarbo Møller; Hjörtur Jóhannsson; Jacob Østergaard

doi:10.1109/PESGM.2018.8585962

Super-Positioning of Voltage Sources for Fast Assessment of Wide-Area Thévenin Equivalents

Jakob Glarbo Møller, Hjörtur Jóhannsson, Jacob Østergaard

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

217 Downloads (Pure)

Abstract

A method for superimposing voltage sources is sought optimized by using a sparse triangular solver and multiprocessing. A revision to the method is suggested which exploits Schur’s complement of the network admittance matrix and optimal re-use of computations. The algorithm is implemented and parallelized for shared memory multiprocessing. The proposed algorithm is tested on a collection of large test systems and performance is found to be significantly better than the reference method. The algorithm will thereby facilitate a speed-up of methods relying on Thévenin equivalent representation such as the Thévenin equivalent method for contingency assessment.

Original language	English
Title of host publication	Proceedings of the 2018 IEEE PES General Meeting
Publisher	IEEE
Publication date	2018
ISBN (Print)	9781538677032
DOIs	https://doi.org/10.1109/PESGM.2018.8585962
Publication status	Published - 2018
Event	2018 IEEE PES General Meeting - Oregon Convention Center, Portland, United States Duration: 5 Aug 2018 → 9 Aug 2018

Conference

Conference	2018 IEEE PES General Meeting
Location	Oregon Convention Center
Country	United States
City	Portland
Period	05/08/2018 → 09/08/2018

Access to Document

10.1109/PESGM.2018.8585962

PESGM2018 000474Accepted author manuscript, 35.4 KB

Fingerprint Dive into the research topics of 'Super-Positioning of Voltage Sources for Fast Assessment of Wide-Area Thévenin Equivalents'. Together they form a unique fingerprint.

Cite this

@inproceedings{730f8d48fbaa4758b56debc18ee553b0,

title = "Super-Positioning of Voltage Sources for Fast Assessment of Wide-Area Th{\'e}venin Equivalents",

abstract = "A method for superimposing voltage sources is sought optimized by using a sparse triangular solver and multiprocessing. A revision to the method is suggested which exploits Schur{\textquoteright}s complement of the network admittance matrix and optimal re-use of computations. The algorithm is implemented and parallelized for shared memory multiprocessing. The proposed algorithm is tested on a collection of large test systems and performance is found to be significantly better than the reference method. The algorithm will thereby facilitate a speed-up of methods relying on Th{\'e}venin equivalent representation such as the Th{\'e}venin equivalent method for contingency assessment. ",

author = "M{\o}ller, {Jakob Glarbo} and Hj{\"o}rtur J{\'o}hannsson and Jacob {\O}stergaard",

year = "2018",

doi = "10.1109/PESGM.2018.8585962",

language = "English",

isbn = "9781538677032 ",

booktitle = "Proceedings of the 2018 IEEE PES General Meeting",

publisher = "IEEE",

address = "United States",

note = "2018 IEEE PES General Meeting ; Conference date: 05-08-2018 Through 09-08-2018",

}

TY - GEN

T1 - Super-Positioning of Voltage Sources for Fast Assessment of Wide-Area Thévenin Equivalents

AU - Møller, Jakob Glarbo

AU - Jóhannsson, Hjörtur

AU - Østergaard, Jacob

PY - 2018

Y1 - 2018

N2 - A method for superimposing voltage sources is sought optimized by using a sparse triangular solver and multiprocessing. A revision to the method is suggested which exploits Schur’s complement of the network admittance matrix and optimal re-use of computations. The algorithm is implemented and parallelized for shared memory multiprocessing. The proposed algorithm is tested on a collection of large test systems and performance is found to be significantly better than the reference method. The algorithm will thereby facilitate a speed-up of methods relying on Thévenin equivalent representation such as the Thévenin equivalent method for contingency assessment.

AB - A method for superimposing voltage sources is sought optimized by using a sparse triangular solver and multiprocessing. A revision to the method is suggested which exploits Schur’s complement of the network admittance matrix and optimal re-use of computations. The algorithm is implemented and parallelized for shared memory multiprocessing. The proposed algorithm is tested on a collection of large test systems and performance is found to be significantly better than the reference method. The algorithm will thereby facilitate a speed-up of methods relying on Thévenin equivalent representation such as the Thévenin equivalent method for contingency assessment.

U2 - 10.1109/PESGM.2018.8585962

DO - 10.1109/PESGM.2018.8585962

M3 - Article in proceedings

SN - 9781538677032

BT - Proceedings of the 2018 IEEE PES General Meeting

PB - IEEE

T2 - 2018 IEEE PES General Meeting

Y2 - 5 August 2018 through 9 August 2018

ER -