Storage dimensioning and energy management for a grid-connected wind/ PV/hydrogen/battery system using MISOCP approach

Battery and hydrogen-based energy storages play a crucial role in mitigating the intermittency of wind and solar power sources. In this paper, we propose a mixed-integer second order cone program (MISOCP) to jointly optimize the dimensioning and energy management of a grid-connected wind-PV-hydrogen-battery system. With the proposed optimization formulation, we comparatively investigate the impacts of the hybrid combination of battery and hydrogen storages on an IEEE 33-bus network in 4 different scenarios. The simulation results show that, the systems with hydrogen storage renders a remarkable profit raise, up to 43.6 %, compared to those systems without hydrogen production. The power consumed by the electrolyzer far surpasses the grid power and accounts for up to 99.5 % of the renewable energies. Additionally, the power losses in the network with hydrogen storage are also reduced due to the onsite consumption.