Identification of Equivalent Impedance Models of Downstream Networks for Harmonic Studies in Extra High Voltage Systems

Research output: Contribution to conferencesPaperContributedpeer-review

Contributors

Abstract

This paper addresses the challenge of modeling the frequency-dependent network impedance of downstream high voltage (HV) networks for accurate harmonic studies in extra high voltage (EHV) transmission systems. With the increasing integration of renewable energy sources, HVDC stations, and Flexible AC Transmission Systems (FACTS), the accurate assessment of harmonic levels within transmission systems has become crucial. The paper proposes a two-step modeling process, beginning with the determination of frequency-dependent impedance characteristics by field measurements or detailed network simulations. These characteristics are then used to fit generic equivalent circuit (EC) models, allowing for the representation of a wide range of typical impedance characteristics. Challenges encountered in the application of this framework, such as the selection of circuit topologies and parameter estimation methods, are discussed. The paper concludes with a demonstration of the suitability of various circuit models and outlines future research directions.

Details

Original languageEnglish
Pages818-823
Number of pages6
Publication statusPublished - Oct 2024
Peer-reviewedYes

Conference

Title21st International Conference on Harmonics and Quality of Power
Abbreviated titleICHQP 2024
Conference number21
Duration15 - 18 October 2024
Website
Degree of recognitionInternational event
LocationTianfu International Convention Center
CityChengdu
CountryChina

External IDs

ORCID /0000-0002-7465-5750/work/172081503
ORCID /0000-0001-5951-2033/work/172567299
Scopus 85213295153
Mendeley 277050df-91db-3194-a8b9-b593b13ce9fc

Keywords

Sustainable Development Goals

Keywords

  • harmonics, modeling, power quality, equivalent circuit model, network harmonic impedance