Optimal Dispatch of Combined Cooling, Heating and Power Microgrid with Advanced Adiabatic Compressed Air Energy Storage

Advanced adiabatic compressed air energy storage (AA-CAES) is a promising large-scale energy storage technology inherently combined cooling, heating and power (CCHP) generation, with the additional merits of high energy efficiency, long service time and zero carbon emission. In this paper, an integrated energy system dispatch-oriented AA-CAES model is developed, where the relationships between charging, discharging, heating and cooling power, and the state of charges (SOC) of air storage (AS) and thermal energy storage (TES) is established around air and heat transfer oil mass flow rate. The economic dispatch of a CCHP microgrid with AA-CAES is then modeled as mixed integer quadratic programming (MIQP). The simulation results demonstrate that the proposed AA-CAES dispatch model delivers more practical scheduling strategies and also verifies the economic benefits of AA-CAES operating in CCHP mode for reducing system operation cost and increasing renewables accommodation.