An operation control strategy for a virtual pumped storage system based on a linear motor

doi:10.12028/j.issn.2095-4239.2018.0197

Abstract

Abstract: Energy storage technology is one of the key enabling technologies for smart grids. Compressed air energy storage (CAES) technology has the potential to provide a similar storage capacity as a pumped storage power station, which is characterized by a large system capacity, potentially low construction and operation costs, a long lifetime, long storage period and limited site selection. Thermodynamic principles suggest a high efficiency of the CAES with an isothermal operation. Therefore, a virtual pumped storage system (VPSS) based on the isothermal CAES is proposed in this work. A constant power operation control strategy suitable for a steady operation of VPSS and a power adjusting operation control strategy are proposed for the storage system. A simulation model of permanent magnet synchronous linear motor (PMLSM) is built within a MATLAB/SIMULINK environment and a magnetic field vector-oriented control method based on SVPWM is used to control the PMLSM. According to the system operation strategy and linear motor control strategy, the basic model of VPSS based on linear motor are simulated and the simulation results verify the feasibility of the proposed constant power operation control strategy.

Key words: virtual pumped storage system, operation control strategy, permanent magnetic synchronous linear motor, vector control

CLC Number:

TK37

FU Hao, JIANG Tong, CUI Yan, QUAN Chao. An operation control strategy for a virtual pumped storage system based on a linear motor[J]. Energy Storage Science and Technology, 2019, 8(1): 98-107.

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