Journal
ENERGIES
Volume 15, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/en15103521
Keywords
model predictive control; load balancing; PV ramp rate control; building efficiency
Categories
Funding
- EPRI
- U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy (EERE) [DE-0007163]
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This paper proposes a two-level model predictive control-based approach for coordinated control and energy management. The system can simultaneously manage building loads and energy storage to achieve different operational objectives through the design of specific power trajectory tracking performance functionals and energy trim function.
This paper uses a two-level model predictive control-based approach for the coordinated control and energy management of an integrated system that includes photovoltaic (PV) generation, energy storage, and building loads. Novel features of the proposed local controller include (1) the ability to simultaneously manage building loads and energy storage to achieve different operational objectives such as energy efficiency, economic cost efficiency, demand response and grid optimization through the design of specific power trajectory tracking performance functionals, (2) an energy trim function that minimizes the impact of solar forecasting errors on system performance, and (3) the design of a state of charge controller that uses day-ahead forecast of solar power and building loads to intialize energy storage at the start of each day. The local controller is tested in simulation using an exemplary system with PV generation, energy storage and dispatchable building loads. Two sample days with different PV forecasts and multiple case scenarios are considered, and the performance of the algorithm in managing the real and reactive net building load trajectories and the ramp rate of PV injections into the utility network are evaluated. The simulations are based on actual forecasted and measured PV data, and the results show that the local controller meets the tracking requirements for real and reactive power within the operating constraints of the building.
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