Research on the optimization of the district energy mix for smart city operation

Abstract

In this research, in order to establish efficient energy supply plan in the smart city and derive efficient operating plan considering not only distribution of classical electricity and heat resources but also CHP, geothermal and biomass which generates both electricity and heat simultaneously, the optimization is performed. In order to carry out case study, the data of Naju city in Jeollanam-do, South Korea which is currently conducting Smart City project are used. The energy resources which are currently installed in Naju and potential resources are modeled and optimization is done to achieve energy independence rate of 20% or more by 2030, in order to reach national goal. As a result of the case study, the total energy demand of Naju in 2030 was estimated to be 2,190 GWh, and about 55% was covered by internal energy resources. With these results, city operator can establish a long-term energy plan for the city and operate the city with an optimized operation strategy in terms of cost.