수소경제에서 연료전지발전의 역할

The hydrogen economy, in which hydrogen is used as a fuel for electricity and hydrogen vehicles, for energy storage/carrier, requires new industry infrastructure in which hydrogen is efficiently produced, transported and used. The Korea government announced ‘Hydrogen Economy Activation Roadmap’ in 2019 which includes plans of hydrogen supply, Fuel Cell Power Plant (FCPP) expansion and fuel cell electricity vehicle(FCEV) spreading, and released HPS(Hydrogen Portfolio Standard) forcing FCPP generation. The electricity generation section is the most important one in the hydrogen economy since it produces hydrogen by electrolysis using electricity and uses it as well to produce electricity by FCPP. This paper proposes a new generation capacity expansion planning(GCEP) model in the hydrogen economy. GCEP is an optimization model to find the capacity expansion plan of the smallest cost while satisfying yearly demand requirements and other technical and political constraints. Our GCEP model is differentiated from old ones in that ours considers hydrogen economy by formulating hydrogen a fuel, FCPP as a power plant and HPS constraint into the GCEP model. Optimal generation capacity expansion plan in the hydrogen economy is found by our GCEP model and compared and analyzed the one of the carbon economy. Empirical experiments based on Korea generation data show that LNG plant will be firstly shrinked by HPS and that high efficiency of FCPP will decrease total capacity.