Impedance-Based Modelling Method for Length-Scalable Long Transmission Cable for Stability Analysis of Grid-Connected Inverter

Weihua Zhou*, Yanbo Wang, Zhe Chen

*Corresponding author

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

3 Citations (Scopus)
40 Downloads (Pure)

Abstract

This paper presents an impedance-based modelling method for length-scalable long transmission cable (LTC), which is able to assess influence of LTC on stability of grid-connected inverter (GCI). Electrical parameters of power cable in per unit-length (p.u.l.) are first extracted from the measured terminal short-circuited and open-circuited admittances. Then, the terminal admittance of power cable in different length can be derived on the basis of the obtained p.u.l. parameters. Finally, a decoupled two-port circuit model is established for the LTC using the derived terminal admittance. Simulation results are given to validate effectiveness of the proposed impedance based modelling method for LTC. The proposed impedance based modelling method is able to avoid repetitive terminal impedance measurement. Also, the proposed model is able to support impedance-based stability criterion for GCI with length scalable LTC.
Original languageEnglish
Title of host publicationProceedings of 2018 IEEE 4th Southern Power Electronics Conference (SPEC)
Number of pages8
PublisherIEEE Press
Publication dateDec 2018
Article number8635872
ISBN (Electronic)9781538682579
DOIs
Publication statusPublished - Dec 2018
EventThe 4th IEEE Southern Power Electronics Conference, SPEC 2018 - Singapore, Singpore, Singapore
Duration: 10 Dec 201813 Dec 2018
http://spec2018.sg/

Conference

ConferenceThe 4th IEEE Southern Power Electronics Conference, SPEC 2018
LocationSingapore
CountrySingapore
CitySingpore
Period10/12/201813/12/2018
Internet address

Keywords

  • Grid-connected inverter
  • Impedance-based stability analysis
  • Long transmission cable
  • p.u.l. parameters
  • Two-port circuit

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