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

Junwoo Lee, Wookyu Chae, Woohyun Kim and Sungyun Choi
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Junwoo Lee: School of Electrical Engineering, Korea University, Seoul 02841, Korea
Wookyu Chae: Smart Power Distribution Laboratory, Distribution Planning Group, Korea Electric Power Research Institute, Daejeon 34056, Korea
Woohyun Kim: Smart Power Distribution Laboratory, Distribution Planning Group, Korea Electric Power Research Institute, Daejeon 34056, Korea
Sungyun Choi: School of Electrical Engineering, Korea University, Seoul 02841, Korea

Sustainability, 2022, vol. 14, issue 7, 1-17

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.

Keywords: meshed network; radial distribution system (RDS); networked distribution system (NDS); series reactor; utilization rate; feeder imbalance; short circuit current (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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