Optimal Scheduling of AC–DC Hybrid Distribution Network Considering the Control Mode of a Converter Station

Xu Tang, Liang Qin (), Zhichun Yang, Xiangling He, Huaidong Min, Sihan Zhou and Kaipei Liu
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Xu Tang: Hubei Key Laboratory of Power Equipment & System Security for Integrated Energy, Wuhan 430072, China
Liang Qin: Hubei Key Laboratory of Power Equipment & System Security for Integrated Energy, Wuhan 430072, China
Zhichun Yang: Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China
Xiangling He: Hubei Key Laboratory of Power Equipment & System Security for Integrated Energy, Wuhan 430072, China
Huaidong Min: Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China
Sihan Zhou: Hubei Key Laboratory of Power Equipment & System Security for Integrated Energy, Wuhan 430072, China
Kaipei Liu: Hubei Key Laboratory of Power Equipment & System Security for Integrated Energy, Wuhan 430072, China

Sustainability, 2023, vol. 15, issue 11, 1-17

Abstract: Due to the difference in types of loads between regions and the increasing integration of random elements such as electric vehicles (EVs) and distributed generations (DGs), distribution station areas (DSAs) are facing challenges such as unbalanced load rates and voltage violations. An AC–DC hybrid distribution network formed by interconnecting AC-DSAs using flexible DC technology can not only address these issues, but also offer more efficient interfaces for EV charging piles and DC devices on the DC side. To fully leverage the advantages of the technology and coordinate dispatchable elements within each DSA, this paper proposes an optimal scheduling model, which balances the load rate between DSAs, improves voltage profiles, and considers the control mode of the converter station as a dispatchable element, taking into account its impact on the voltage deviation on the DC side. Simulation results demonstrate the effectiveness of the proposed model in balancing load rate and improving voltage profiles. Moreover, rational decision-making regarding the selection of the control mode for converter stations can effectively mitigate the voltage deviation on the DC side without deteriorating the voltage deviation on the AC side.

Keywords: AC–DC hybrid distribution network; control mode of converter station; distribution station area; load rate balancing; optimal scheduling; voltage control (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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