Multi-Period Transmission Expansion Planning for Renewables-Rich Power Grid Enabling Transfer Capacity Enhancement of Hybrid AC/DC Interface

Li Shen, Li Jiang, Qing Wang, Yiyu Wen and Tingjian Liu ()
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Li Shen: State Grid Southwest Branch Corporation, State Grid Corporation of China, Chengdu 610095, China
Li Jiang: State Grid Southwest Branch Corporation, State Grid Corporation of China, Chengdu 610095, China
Qing Wang: State Grid Southwest Branch Corporation, State Grid Corporation of China, Chengdu 610095, China
Yiyu Wen: State Grid Southwest Branch Corporation, State Grid Corporation of China, Chengdu 610095, China
Tingjian Liu: College of Electrical Engineering, Sichuan University, Chengdu 610065, China

Energies, 2023, vol. 16, issue 5, 1-15

Abstract: With the increasing integration of HVDC tie-lines, the regional power systems in both the energy-exporting area and the energy-importing area have been gradually evolving into “strong DC, weak AC” systems. In this paper, a multi-period transmission expansion planning optimization model is proposed for an energy-exporting power grid with hybrid AC/DC interface. While the existing literature has not considered the dynamic security problem in TEP, this paper adopts the conventional total transfer capacity (TTC) index to evaluate the security limit of hybrid AC/DC interface under different transmission expansion schemes. Multiple objectives are considered to reduce the investment cost while promoting the consumption of renewables by enhancing the total transfer capacity of hybrid AC/DC interface. The non-dominated sorting genetic algorithm-II (NSGA-II) is used to compute the optimal solution for the proposed multi-period multi-objective transmission expansion planning problem. A case study on the modified IEEE 39-bus system is presented to demonstrate the effectiveness of the proposed method.

Keywords: transmission expansion planning; multi-period planning; renewables-rich power grid; hybrid AC/DC interface; transfer capacity (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: 2023
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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