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Optimal scheduling of multi-energy systems with load scheduling in multiple energy streams

An optimal day-ahead scheduling formulation for a typical multi energy system (MES) is presented in this paper. A typical MES may include components such as combined cycle gas turbines (CCGTs), renewable energy generators (REGs), battery energy storage systems (BESSs), boilers and thermal energy storage systems (TESSs). The proposed formulation includes the startup and shutdown trajectories of the CCGT components such as gas turbines (GTs), boilers and steam turbines (STs). The proposed formulation also includes a practical, load management scheme which optimally schedules the flexible components in the system including the electrical pumps, the thermal loads and the interruptible loads (ILs), thereby reducing the total operating cost of the system. The proposed formulation’s efficacy is demonstrated using a day-ahead scheduling problem solved under four scenarios.