A Two-Stage Stochastic Unit Commitment Considering Shared Energy Storage and Renewable Energy Sources

Abstract

Renewable energy sources play important role in the provision of clean electricity and the reduction of emissions in the power industry. However, the intermittency and uncertainty of renewable energy sources would bring great challenges to the secure operation of the modern power system. Energy storage is utilized to handle the above issues at an expensive cost. Shared energy storage is introduced to obtain a lower operation cost further. Firstly, the mathematical model of shared energy storage is studied. Secondly, a two-stage stochastic dispatch model for the power system considering shared energy storage and renewable energy sources is proposed to handle the uncertainty. Finally, numerical results performed on the modified IEEE 24-bus system demonstrate the effectiveness of the proposed model in the reduction of operation costs.