CONTROLLING AN HVAC SYSTEM IN ASSOCIATION WITH A DEMAND-RESPONSE EVENT
First Claim
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1. A method of carrying out a demand response (DR) event by a control system, the method comprising:
- identifying, by the system, a DR event period for the DR event;
accessing a plurality of parameter sets;
generating candidate setpoint schedules for the DR event period for each of the plurality of parameter sets;
simulating each of the candidate setpoint schedules using a thermodynamic model of how one or more structures respond to one or more heating, ventilation, and air conditioning (HVAC) systems;
generating predicted indoor temperature profiles or HVAC duty cycle schedules for each of the simulated candidate setpoint schedules;
evaluating a cost function for each of the predicted indoor temperature profiles or HVAC duty cycle schedules;
selecting an optimal predicted indoor temperature profile or HVAC duty cycle schedule that minimizes the cost function; and
controlling the one or more HVAC systems during the DR event period in accordance with the optimal predicted indoor temperature profile or HVAC duty cycle schedule.
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Abstract
A control system includes an energy management system in operation with intelligent, network-connected thermostats located in structures. The thermostats are operable to control HVAC systems. Control during a DR event period may be performed based on an optimal control trajectory of the HVAC system, where the control trajectory is optimal in that it minimizes a cost function.
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Citations
20 Claims
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1. A method of carrying out a demand response (DR) event by a control system, the method comprising:
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identifying, by the system, a DR event period for the DR event; accessing a plurality of parameter sets; generating candidate setpoint schedules for the DR event period for each of the plurality of parameter sets; simulating each of the candidate setpoint schedules using a thermodynamic model of how one or more structures respond to one or more heating, ventilation, and air conditioning (HVAC) systems; generating predicted indoor temperature profiles or HVAC duty cycle schedules for each of the simulated candidate setpoint schedules; evaluating a cost function for each of the predicted indoor temperature profiles or HVAC duty cycle schedules; selecting an optimal predicted indoor temperature profile or HVAC duty cycle schedule that minimizes the cost function; and controlling the one or more HVAC systems during the DR event period in accordance with the optimal predicted indoor temperature profile or HVAC duty cycle schedule. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A control system for controlling operations of one or more HVAC systems in one or more structures, the control system comprising:
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one or more processors; and one or more memory devices comprising instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising; identifying, by the system, a DR event period for the DR event; accessing a plurality of parameter sets; generating candidate setpoint schedules for the DR event period for each of the plurality of parameter sets; simulating each of the candidate setpoint schedules using a thermodynamic model of how one or more structures respond to one or more heating, ventilation, and air conditioning (HVAC) systems; generating predicted indoor temperature profiles or HVAC duty cycle schedules for each of the simulated candidate setpoint schedules; evaluating a cost function for each of the predicted indoor temperature profiles or HVAC duty cycle schedules; selecting an optimal predicted indoor temperature profile or HVAC duty cycle schedule that minimizes the cost function; and controlling the one or more HVAC systems during the DR event period in accordance with the optimal predicted indoor temperature profile or HVAC duty cycle schedule. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification