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Demand Response

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Application 20200218233


Published 2020-07-09

Systems And Methods For Prediction Model Update Scheduling For Building Equipment

A building system includes building equipment operable to consume one or more resources and a control system configured to generate, based on a prediction model, predictions of a load on the building equipment or a price of the one or more resources for a plurality of time steps in an optimization period, solve, based on the predictions, an optimization problem to generate control inputs for the equipment that minimize a predicted cost of consuming the resources over the optimization period, control the building equipment to operate in accordance with the control inputs, monitor an error metric that characterizes an error between the predictions and actual values of the at least one of the load on the building equipment or the price of the one or more resources during the optimization period, detect an occurrence of a trigger condition, and in response to detecting the trigger condition, update the prediction model.


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3 Independent Claims

  • Independent Claim 1. A building system comprising: building equipment operable to consume one or more resources and affect a variable state or condition of a building, the resources provided by one or more utility systemsa control system configured to: generate, based on a prediction model, predictions of at least one of a load on the building equipment or a price of the one or more resources for a plurality of time steps in an optimization periodsolve, based on the predictions, an optimization problem to generate control inputs for the equipment that minimize a predicted cost of consuming the one or more resources over the optimization periodcontrol the building equipment to operate in accordance with the control inputsmonitor an error metric that characterizes an error between the predictions and actual values of the at least one of the load on the building equipment or the price of the one or more resources during the optimization perioddetect an occurrence of a trigger condition, the trigger condition defined as a property of the error metricand in response to detecting the trigger condition, update the prediction model to generate an updated prediction modelgenerate updated control inputs for the building equipment based on the updated prediction modeland control the building equipment to operate in accordance with the updated control inputs.

  • Independent Claim 10. A method for controlling a building system, the method comprising: operating building equipment to consume one or more resources and affect a variable state or condition of a building, the resources provided by one or more utility systemsgenerating, based on a prediction model, predictions of at least one of a load on the building equipment or a price of the one or more resources for a plurality of time steps in a time periodgenerating, based on the predictions, control inputs for the equipment that manage a predicted cost of consuming the one or more resources over the time periodcontrolling the building equipment to operate in accordance with the control inputsmonitoring an error metric that characterizes an error between the predictions and actual values of the at least one of the load on the building equipment or the price of the one or more resources during the time perioddetecting an occurrence of a trigger condition, the trigger condition defined as a property of the error metricin response to detecting the trigger condition, updating the prediction model to generate an updated prediction model generating updated control inputs for the building equipment based on the updated prediction modeland controlling the building equipment to operate in accordance with the updated control inputs.

  • Independent Claim 19. A central plant comprising: a plurality of subplants operable to consume, generate, or store one or more resources, at least one of the resources provided by a utility system at a utility ratea control system configured to: generate, based on one or more prediction models, predictions of at least one of a load on a campus served by the central plant or the utility rate for a plurality of time steps in an optimization periodsolve, based on the predictions, an optimization problem to generate control inputs for the subplants that minimize a predict cost of consuming the resource provided by the utility system over the optimization periodcontrol the subplants to operate in accordance with the control inputsmonitor an error metric that characterizes an error between the predictions and actual values of the at least one of the load on the campus served by the central plant or the utility ratedetect an occurrence of a trigger condition, the trigger condition defined as a property of the error metricin response to detecting the trigger condition, update the one or more prediction modelscontrol the plurality of subplants in accordance with an optimization strategy generated based on the one or more prediction models.