Wide frequency range medium-voltage grid impedance analysis by current injection of a multi-MW power converter

Frederik Hahn, Sebastian Bruske, Berthold Benkendorff, Giampaolo Buticchi, Friedrich W. Fuchs, Marco Liserre

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)

Abstract

More and more energy is fed especially by decentralized converters from renewable energy sources into the grid. Therefore, it is important to know the grid behavior at a wide frequency range from the fundamental frequency up to the kHz-range. This paper presents an advanced impedance medium-voltage measurement system with a high frequency range for an electrical medium-voltage grid. A sinusoidal current of a predefined frequency is injected into the grid. With this, the grid impedance is calculated from the measured magnitude and phase of the injected current and the resulting voltage. The measurements will be executed at different frequencies to produce approximate continuous impedance versus frequency characteristic of the grid at the measured coupling point. Results of a ready to use, low-voltage impedance measurement system are discussed, and the design considerations the basic concept and first simulation results of the developed medium-voltage system are presented in this paper.

Original languageEnglish
Title of host publication2016 18th European Conference on Power Electronics and Applications, EPE 2016 ECCE Europe
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9789075815245
DOIs
Publication statusPublished - 25 Oct 2016
Externally publishedYes
Event18th European Conference on Power Electronics and Applications, EPE 2016 ECCE Europe - Karlsruhe, Germany
Duration: 5 Sep 20169 Sep 2016

Publication series

Name2016 18th European Conference on Power Electronics and Applications, EPE 2016 ECCE Europe

Conference

Conference18th European Conference on Power Electronics and Applications, EPE 2016 ECCE Europe
Country/TerritoryGermany
CityKarlsruhe
Period5/09/169/09/16

Keywords

  • High frequency power converter
  • Impedance measurement
  • Power quality

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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