Optimal Power Model Predictive Control for Electrochemical Energy Storage Power Station

Chong Shao, Chao Tu, Jiao Yu, Mingdian Wang, Cheng Wang and Haiying Dong ()
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Chong Shao: State Grid Gansu Electric Power Company, Lanzhou 730000, China
Chao Tu: State Grid Zhangye Power Supply Company, State Grid Gansu Electric Power Company, Zhangye 734000, China
Jiao Yu: State Grid Gansu Electric Power Company, Lanzhou 730000, China
Mingdian Wang: State Grid Zhangye Power Supply Company, State Grid Gansu Electric Power Company, Zhangye 734000, China
Cheng Wang: School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
Haiying Dong: School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

Energies, 2024, vol. 17, issue 14, 1-18

Abstract: Aiming at the current power control problems of grid-side electrochemical energy storage power station in multiple scenarios, this paper proposes an optimal power model prediction control (MPC) strategy for electrochemical energy storage power station. This method is based on the power conversion system (PCS) grid-connected voltage and current to establish a power prediction model for energy storage power stations, achieving a one-step prediction of the power of the power station. The power prediction error is used as a power regulation feedback quantity to correct the reference power input. Considering the state of charge ( S O C ) constraint of the battery, partition the S O C into different states. Using S O C as the power regulation feedback, the power of the battery compartment can be adjusted according to the range of the battery S O C to prevent S O C from exceeding the limit value, simultaneously calculating the power loss of the energy storage power station to improve the energy efficiency. The objective function is to minimize the power deviation and power loss of the power station. By solving the objective function, the optimal switching voltage vector of the converter output is achieved to achieve optimal power control of the energy storage power station. The simulation results in various application scenarios of the energy storage power station show that the proposed control strategy enables the power of the storage station to quickly and accurately track the demand of grid scheduling, achieving the optimal power control of the electrochemical energy storage power station.

Keywords: electrochemical energy storage power station; PCS; model predictive control; SOC (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: 2024
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