Short-Term Cooperative Operational Scheme of Distribution System with High Hosting Capacity of Renewable-Energy-Based Distributed Generations

Chan-Hyeok Oh, Joon-Ho Choi, Sang-Yun Yun and Seon-Ju Ahn
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Chan-Hyeok Oh: Department of Electrical Engineering, Chonnam National University, Gwangju 61186, Korea
Joon-Ho Choi: Department of Electrical Engineering, Chonnam National University, Gwangju 61186, Korea
Sang-Yun Yun: Department of Electrical Engineering, Chonnam National University, Gwangju 61186, Korea
Seon-Ju Ahn: Department of Electrical Engineering, Chonnam National University, Gwangju 61186, Korea

Energies, 2021, vol. 14, issue 19, 1-25

Abstract: As the interconnection of renewable-energy-based distributed generations (DGs) to the distribution system increases, the local and temporary voltage and current problems, which are difficult to resolve with the existing operation method, are becoming serious. In this study, we propose a short-term operational method that can effectively resolve voltage and current violations caused by instantaneous output fluctuations of DGs in a system with a high hosting capacity of renewable energy sources. To achieve the objectives, a modified heuristic network reconfiguration method, and a method determining the maximum power output limit of individual DGs are proposed. We propose a cooperative method for controlling the power output fluctuations of renewable-energy-based DGs, which includes voltage control, network reconfiguration, and power curtailment. The proposed algorithm was verified through case studies by using a test system implemented in MATLAB environments. It can effectively resolve violations caused by DGs while minimizing the number of switching operations and power curtailment. The proposed method is an appropriate operation method to be applied to the real system as it can cope with the instantaneous output fluctuation of DGs, which was not dealt with in the existing operation method.

Keywords: active distribution network; hosting capacity; network reconfiguration; operational planning (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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