Optimal operation of wind-solar-hydrogen storage system based on energy hub

Along with the exhaustion of fossil fuels and the environmental pollution problem, renewable energy will surely become the mainstream of the future energy sector in the world. The uncertainty of large-scale intermittent energy output brings a great challenge to the safe operation of power grids. In this paper, taking into account the volatility and randomness of wind power and solar energy, we present a multi-energy coupling model with the core of hydrogen energy based on energy hub. To maximize operational profits of multi-energy system, an optimization problem is formulated to achieve coordinated operation using matrix coupling methodology. The matrix coupling mode can represent the input-output relationship of energy carriers. The CPLEX software is used to obtain the optimal solution in the dispatching period. In contrast with the traditional operation mode without the utilization of hydrogen, simulation results indicate that the proposed model achieves the higher penetration of renewable energy and more profits.