Optimal scheduling method of controllable loads in DC-smart house with deregulated electricity market

The price of electricity has especially become expensive due to energy shortage with respect to the halting of nuclear power generation during peak hours in Japan. It is thought that a deregulated electricity market not only has a real chance to be an effective contribution to the reduction of price, but also a method for the efficient operation of thermal generators. From this background, this paper presents a method for optimal operation scheduling of controllable loads in the residential sector considering the environment of the electricity market with an aggregator who coordinates consumer demand for power receiving requests from the utility company. An optimization problem to determine the optimal price traded between the aggregator and consumers, and scheduling of controllable loads, are solved by proposed method. The simulation results indicate that a minimization of operational cost on both sides and a decrease of peak power demand are achieved by using the electricity market.