Optimal planning of mobile energy storage in active distribution network

• Published in: IET smart grid 2024-02, Vol.7 (1), p.1-12
• Main Authors: Xia, Shiwei, Wang, Zizheng, Gao, Xiang, Li, Wenpei
• Format: Article
• Language: English
• Subjects: distribution network planning; mobile energy storage
• ISSN: 2515-2947; 2515-2947
• DOI: 10.1049/stg2.12139

Mobile energy storage (MES) has the flexibility to temporally and spatially shift energy, and the optimal configuration of MES shall significantly improve the active distribution network (ADN) operation economy and renewables consumption. In this study, an optimal planning model of MES is established for ADN with a goal of minimising the annual cost of a distribution system. Firstly, the annual cost of a distribution system is set up with consideration of the investment cost and operation cost of MES, wind and PV curtailment cost, network loss cost and the peak‐valley arbitrage income of MES. Then, the distributed photovoltaic and wind power access constraints, power conservation constraints of ADN, power generation constraint, system security constraint, energy coupling and displacement constraints of MES are further tailored to establish the MES planning model. Afterwards, the proposed model is solved by the second‐order cone relaxation combined with the large M algorithm. Finally, the simulation results of the modified IEEE 33‐bus distribution network validate the effectiveness of the proposed model. The MES configuration strategy was established to minimise the system operation cost with the consideration of the operational flexibility of MES. The simulation results indicate that the proposed MES configuration strategy could effectively reduce the operating cost and smooth the load fluctuation of the distribution network with a satisfied voltage level, as well as promote the consumption of renewable energy.