A Novel Optimal Operation of Integrated Electrical and Heating System with Photovoltaic and Solar Thermal System

Nowadays, combined heat and power (CHP) has been widely used in power system. In order to overcome the shortcomings in a single CHP system, an integrated electrical and heating system (IEHS) may be established. In this paper, a model of integrated electrical and heating system with solar energy is adopted. Solar energy can supply the heat by solar thermal system (STS) and power by photovoltaic (PV) system. Considering heat market and heat storage (HS), a novel operation strategy of IEHS is proposed and optimized to find the minimum operation cost with ensuring supply meet the demand. Meanwhile, the area distribution of solar energy capture installations is explored. In this paper, the non-linear optimization problem is solved using particle swarm optimization (PSO). In the case study, an eleven-bus electrical power system and an eleven-node heating system are chosen to study and analyze. Simulation results show that the proposed optimal operation strategy is effective to reduce the operation cost.