Performance Modeling of A Wind-Solar-Hydrogen Multi-Energy System for Economic Operation

In the past decades, the installation of wind and
solar energy has rapidly increased. The electric grid has been
ever increasingly penetrated with such intermittent renewable
source, which inevitably increase the schedule difficulty and cause
stability issues. To solve such problems and efficiently utilize
the renewable energy, electrolyzer plants are integrated within
the grid. In this work, we propose a performance modeling
method to evaluate the economic operation of multi-energy
system with a wind turbine, PV farm, and electrolyzer plants.
The proposed model considers the uncertainty of the wind speed,
solar irradiance, and electricity and hydrogen price variation.
The estimated system revenue is compared with and without
the electrolyzer plant at hourly electricity spot price and four hour hydrogen spot price. Meanwhile, the estimated system
revenues with summer and winter electricity price are evaluated
separately. In the summer, the system operator can increase the
revenue by participating the hydrogen market, whereas, during
the winter, the electricity revenue is greater than the hydrogen
revenue due to the expensive electricity price.