Assessment of errors introduced by common assumptions made in power system studies

Jaime Peralta, Francisco De León, Jean Mahseredjian

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Power system studies using commercial or in-house developed software are performed making several assumptions. This paper analyzes the errors introduced by the most common modeling simplifications made for load-flow, short-circuit, and transient stability studies. Load-flow studies for transmission systems almost invariably rely on the positive-sequence approach. While this may be acceptable for most transmission system conditions, errors of up to 15% can be found by not considering the unbalanced nature of power systems components. Errors larger than 10% are found in short-circuit studies by using symmetrical components. Common assumptions also introduce differences in transient stability analysis. The results for the studied test case show differences of up to 14% in the determination of the maximum clearing time. With the current development status of computing hardware and available algorithms, more accurate modeling is currently available even for large systems.

Original languageEnglish (US)
Title of host publication2011 IEEE PES General Meeting
Subtitle of host publicationThe Electrification of Transportation and the Grid of the Future
DOIs
StatePublished - Dec 9 2011
Event2011 IEEE PES General Meeting: The Electrification of Transportation and the Grid of the Future - Detroit, MI, United States
Duration: Jul 24 2011Jul 28 2011

Publication series

NameIEEE Power and Energy Society General Meeting
ISSN (Print)1944-9925
ISSN (Electronic)1944-9933

Other

Other2011 IEEE PES General Meeting: The Electrification of Transportation and the Grid of the Future
CountryUnited States
CityDetroit, MI
Period7/24/117/28/11

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Keywords

  • Electromagnetic Couplings
  • Multiphase Systems
  • Positive-Sequence
  • Short-Circuit
  • Transient stability
  • Transmission and Distribution Networks
  • Unbalanced Load-Flow

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering

Cite this

Peralta, J., De León, F., & Mahseredjian, J. (2011). Assessment of errors introduced by common assumptions made in power system studies. In 2011 IEEE PES General Meeting: The Electrification of Transportation and the Grid of the Future [6038966] (IEEE Power and Energy Society General Meeting). https://doi.org/10.1109/PES.2011.6038966