Security Region of Integrated Heat and Electricity System Considering Thermal Dynamics

The broad development of integrated heat and electricity systems (IHES) improved the energy utilization efficiency, but it also increased risk cascaded accidents difficulty operation. security region that defines permitted operation range is efficient for planning control IHESs, while accurate formulation boundary renders its applications. To address this problem, article first proposes a novel equivalent thermal model (ETM) to build direct connection between operations states variables in heating system. ETM directly characterizes network response inputs accurately describes dynamic process On basis, method construct IHES presented considering dynamics, where critical formulated with set hyperplanes. describe numerical simulations from different aspects verify effectiveness ETM. results indicate dynamics influence renewable penetration power system significantly.