Impact of momentary cessation voltage level in inverter-based resources on increasing the short circuit current

Namki Choi, Bohyun Park, Hwanhee Cho, Byong Jun Lee

Research output: Contribution to journalArticle

Abstract

This study analyzed the impact of varying the momentary cessation (MC) voltage level on the short circuit current of inverter-based resources (IBRs). To analyze the impact of the IBR MC function on the short circuit current, this paper proposes an advanced IBR model for fault current calculation to reflect its fault characteristics and a scheme for analyzing the influence of MC on the short circuit current. Based on the proposed methods, the authors conducted case studies using planning data from the Korea Electric Power Corporation (KEPCO). The influence of MC was investigated on the IBRs located at the southwest side of the KEPCO systems by screening the fault currents while varying the MC voltage. This paper demonstrates that the minimum MC voltage level needed for the fault current not to exceed the circuit breaker (CB) capacity can be proposed through analyzing the impact of MC voltage level on the short circuit current. The test results based on the proposed scheme showed that the short circuit current to power systems could not violate CB capacity if IBRs adjusted the MC voltage level higher than the lowest MC voltage level.

Original languageEnglish
Article number1153
JournalSustainability (Switzerland)
Volume11
Issue number4
DOIs
Publication statusPublished - 2019 Feb 1

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Short circuit currents
Electric fault currents
Electric potential
resource
resources
Electric circuit breakers
Korea
corporation
planning data
Industry
Screening
Planning
electric power

Keywords

  • Control strategy of inverters
  • Fault current
  • Grid integration of renewable energy systems
  • Inverter-based resources (IBRs)
  • Momentary cessation (MC)

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Renewable Energy, Sustainability and the Environment
  • Management, Monitoring, Policy and Law

Cite this

Impact of momentary cessation voltage level in inverter-based resources on increasing the short circuit current. / Choi, Namki; Park, Bohyun; Cho, Hwanhee; Lee, Byong Jun.

In: Sustainability (Switzerland), Vol. 11, No. 4, 1153, 01.02.2019.

Research output: Contribution to journalArticle

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