Patent US10190793 Energy Financial Settlements

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Patent US10190793

Issued 2019-01-29

Building Management System With Electrical Energy Storage Optimization Based On Statistical Estimates Of Ibdr Event Probabilities

A central plant that generates and provides resources to a building. The central plant includes an electrical energy storage subplant configured to store electrical energy purchased from a utility and to discharge the stored electrical energy. The central plant includes a plurality of generator subplants that consume one or more input resources. The central plant includes a controller configured to determine, for each time step within a time horizon, an optimal allocation of the input resources and the output resources for each of the subplants in order to optimize a total monetary value of operating the central plant over the time horizon. The total monetary value includes revenue from participating in incentive-based demand response programs as well as costs associated with resource consumption, equipment degradation, and losses in battery capacity.

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3 Independent Claims

1. A building management system comprising: building equipment configured to consume electrical energy and generate thermal energy for use in satisfying a thermal energy load of a building; thermal energy storage configured to store at least a portion of the thermal energy generated by the building equipment and to discharge the stored thermal energy; electrical energy storage configured to store electrical energy purchased from a utility and to discharge the stored electrical energy; and a controller configured to determine, for each time step within a time horizon, an optimal amount of electrical energy to allocate to an incentive-based demand response (IBDR) program by optimizing a value function that accounts for revenue predicted to result from participating in the IBDR program based on statistical estimates of IBDR event probabilities; wherein the controller is configured to estimate the IBDR event probabilities based on a history of past IBDR events, each of the past IBDR events comprising an invitation to participate in the IBDR program in exchange for a monetary incentive.
8. A method for optimizing revenue from participating in an incentive-based demand response (IBDR) program, the method comprising: storing electrical energy in electrical energy storage, wherein the electrical energy is purchased from a utility; determining statistical estimates of IBDR event probabilities based on a history of past IBDR events, each of the past IBDR events comprising an invitation to participate in the IBDR program in exchange for a monetary incentive; determining, for each time step within a time horizon, an optimal amount of the stored electrical energy to allocate to the IBDR program by providing a value function that accounts for revenue predicted to result from participating in the IBDR program based on the statistical estimates of the IBDR event probabilities; discharging electrical energy from the electrical energy storage based on the optimal amount of the stored electrical energy to allocate to the IBDR program; and using the discharged electrical energy to participate in the IBDR program.
15. A controller for allocating an amount of electrical energy to an incentive-based demand response (IBDR) program, the controller comprising: a processing circuit configured to: generate statistical estimates of IBDR event probabilities based on a history of past IBDR events, each of the past IBDR events comprising an invitation to participate in the IBDR program in exchange for a monetary incentive; predict an expected revenue from participating in the IBDR program from the statistical estimates of the IBDR event probabilities; determine, for each time step within a time horizon, the amount of electrical energy to allocate to the IBDR program by performing an optimization of a value function that accounts for the expected revenue predicted to result from participating in the IBDR program; and cause electrical energy storage to discharge electrical energy based on the amount of electrical energy to allocate to the IBDR program.