Abstract
Electric power generation performances differ by whether air is supplied to a solid high polymer film type fuel cell, or oxygen is supplied. The reduction method of the equipment capacity of the fuel cell system of having used this characteristic is considered. When electricity demand is small, a part of electric power generated by the fuel cell is supplied to a water electrolysis device, the hydrogen and oxygen which were generated by the water electrolysis are compressed, and these store in each cylinder. On the other hand, when electricity demand is large, both gases are supplied to the fuel cell system and generated. To load change of electricity demand, in this paper, as described above, the fuel cell system in consideration of reduction of fuel cell capacity is operated. If this method is introduced into the local energy network constituted from individual houses, a hospital, office, etc., it will be estimated as what becomes 36% of capacity reduction to the conventional system.
