Frequency and Temperature-Dependent Power Cable Modelling 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)
43 Downloads (Pure)

Abstract

This paper presents a RLC circuit model of long transmission cable (LTC) with consideration of frequency and temperature-dependent characteristics. Per-unit-length (p.u.1.) impedance of the LTC considering frequency-dependent characteristics are first calculated and fitted by Vector Fitting (VF) algorithm. Then, the fitted model of the p.u.1. impedance is represented by a Π section, which consists of a series of RL branches and two parallel capacitors. Impedance model of LTC with arbitrary length can be established by cascading several Π sections. In addition, the effect of ambient temperature variation on electrical performance of LTC are investigated. Simulation results show that the proposed RLC circuit model is able to reveal practical frequency and temperature characteristics, which may be used to investigate effect of power cable on stability of grid-connected inverter.
Original languageEnglish
Title of host publicationProceedings of 2018 IEEE 4th Southern Power Electronics Conference (SPEC)
Number of pages8
PublisherIEEE Press
Publication dateDec 2018
ISBN (Electronic)978-1-5386-8257-9
DOIs
Publication statusPublished - Dec 2018
Event4th IEEE Southern Power Electronics Conference, SPEC 2018 - Singapore, Singapore
Duration: 10 Dec 201813 Dec 2018

Conference

Conference4th IEEE Southern Power Electronics Conference, SPEC 2018
CountrySingapore
CitySingapore
Period10/12/201813/12/2018

Keywords

  • Frequency-dependent
  • Grid-connected inverter
  • Long transmission cable
  • RLC equivalent circuit
  • Small-signal stability analysis
  • Temperature-dependent

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