Abstract
Combined heat and power (CHP) units, as integrated power and heating systems, aim for the flexibility of the electric system and efficiency of the heating system. In this study, the static and dynamic models for CHP units are presented, and a novel control strategy for heat and power coordination and distribution is proposed based on the design of heat-to-power support, heat state reconstruction, and accurate energy balance. Simulation results of a 300 MW CHP unit prove that the proposed strategy improves the unit power load-following capability and meanwhile ensures reliable heat supply.
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