Control Strategy for Line Overload and Short Circuit Current of Networked Distribution Systems

Junwoo Lee, Wookyu Chae, Woohyun Kim, Sungyun Choi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The expected increase in renewable energy sources (RESs) and electric vehicles (EVs) connected to distribution systems will result in many technical constraints. A meshed network is a promising solution; however, some remarkable challenges must be overcome. Among these, this paper mainly focuses on the line overload and short circuit current of a networked distribution system (NDS) in Korea, an advanced form of meshed network. An NDS refers to a system in which there exists permanent linkages between four feeders and N × N communication-based protection. We propose a method, which employs the tap changing control algorithm of the series reactor to control line overload and short circuit current. MATLAB/Simulink was used to evaluate the proposed method. Three different types of distribution system were employed. First, the utilization rate and feeder imbalance were analyzed in steady-state condition. Subsequently, the short circuit current was analyzed in short circuit condition. The results revealed that the proposed method can effectively prevent line overload in up to 82.7% of cases, enhance the utilization rate by up to 79.9%, and relieve the short circuit current; that is, it can contribute to system stability and the economic operation of an NDS.

Original languageEnglish
Article number4208
JournalSustainability (Switzerland)
Volume14
Issue number7
DOIs
Publication statusPublished - 2022 Apr 1

Keywords

  • feeder imbalance
  • meshed network
  • networked distribution system (NDS)
  • radial distribution system (RDS)
  • series reactor
  • short circuit current
  • utilization rate

ASJC Scopus subject areas

  • Computer Science (miscellaneous)
  • Geography, Planning and Development
  • Renewable Energy, Sustainability and the Environment
  • Building and Construction
  • Environmental Science (miscellaneous)
  • Energy Engineering and Power Technology
  • Hardware and Architecture
  • Computer Networks and Communications
  • Management, Monitoring, Policy and Law

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