Capacity Configuration Method of Energy Storage System in Data Center Based on Improved Quantum Gravity Search Algorithm

In order to guarantee the power supply reliability(PSR) and reduce the electricity cost of data center, a capacity configuration method of energy storage system(ESS) in data center based on improved quantum gravity search algorithm(QGSA) is proposed. Firstly, the availability is used as an index to evaluate the PSR, and an availability model is formulated to analyze the PSR of data center; Secondly, considering the investment and revenue of ESS, the capacity configuration model of ESS considering the PSR is formulated to maximize the revenue; Then, the levy flight and adaptive adjustment strategy of contraction expansion(CE) coefficient is proposed to improve the QGSA, and the improved QGSA is used to solve the capacity configuration model of ESS; Finally, simulation analysis is conducted with typical daily loads of a certain data center, and the results show that the proposed capacity configuration method of ESS can ensure the PSR of data center and obtain considerable revenue.