Reliability Evaluation of Coupled Heat and Electricity Systems with CSP Considering Thermal Dynamic Characteristics

Abstract

This paper proposes a reliability evaluation method for the coupled heat and electricity (CHE) systems containing concentrated solar power (CSP) plants considering thermal dynamic characteristics. Firstly, the structure and the operation mechanism of the CHE system are introduced. The system framework containing conventional units, CSP plants, combined heat and power (CHP) units and electric heater (EH) is constructed for cogeneration. Then the dynamic characteristic models of heating network and thermal load are introduced. Additionally, taking the sum of system operation cost and load curtailment cost as objective function, the optimal load curtailment model of the CHE system is established. Finally, considering the thermal dynamic characteristics and the random failure of each equipment in the system, the model is applied to calculate the reliability indices by sequential Monte Carlo method. The simulative results show that considering the thermal dynamic characteristics can significantly improve the reliability of the CHE system.