Central plant optimization system with streamlined data linkage of design and operational data

Patent metadata

Field	Value
Publication number	US-10928784-B2
Application number	US-201816178361-A
Country	US
Kind code	B2
Filing date	Nov 1, 2018
Priority date	Nov 1, 2018
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

A central plant optimization system for designing and operating a central plant includes a planning tool, a central plant controller, and an optimization platform. The planning tool is configured to generate a model of the central plant. The central plant controller is configured to receive the model of the central plant from the planning tool and combine the model of the central plant with timeseries data including a timeseries of predicted energy loads to be served by equipment of the central plant. The optimization platform is configured to receive the model of the central plant combined with the timeseries data, construct an optimization problem using the model of the central plant and the timeseries data, solve the optimization problem to determine an optimal allocation of the energy loads across the equipment of the central plant, and provide optimization results to the central plant controller. The central plant controller is configured to use the optimization results to operate the equipment of the central plant to achieve the optimal allocation of the predicted energy loads.

First claim

What is claimed is:

1. A central plant optimization system for designing and operating a central plant, the central plant optimization system comprising:
a planning tool configured to obtain a model of the central plant comprising one or more element links representing physical connections between equipment of the central plant;
a central plant controller configured to receive the model of the central plant from the planning tool and combine the model of the central plant with timeseries data comprising a timeseries of predicted energy loads to be served by the equipment of the central plant;
an optimization platform configured to:
receive, from the central plant controller, the model of the central plant combined with the timeseries data;
automatically construct an optimization problem for the central plant using the model of the central plant and the timeseries data by using the elements links to build constraints that reflect the physical connections between the equipment of the central plant;
solve the optimization problem to determine an optimal allocation of the energy loads across the equipment of the central plant at each of a plurality of time steps within an optimization period; and
provide optimization results comprising the optimal allocation of the predicted energy loads to the central plant controller;

wherein the central plant controller is configured to use the optimization results to operate the equipment of the central plant to achieve the optimal allocation of the predicted energy loads.

2. The central plant optimization system of claim 1 , wherein the timeseries data further comprise a timeseries of prices for one or more resources consumed by the equipment of the central plant.

3. The central plant optimization system of claim 1 , wherein the planning tool is configured to combine the model of the central plant with plan information comprising predetermined energy loads for each time step of the optimization period.

4. The central plant optimization system of claim 1 , wherein the optimization platform is configured to receive, from the planning tool, the model of the central plant combined with the plan information and solve the optimization problem using the plan information in place of the timeseries data in response to a request from the planning tool.

5. The central plant optimization system of claim 1 , wherein receiving the model of the central plant occurs on user demand.

6. The central plant optimization system of claim 1 , wherein the central plant controller is configured to provide optimization results comprising the optimal allocation of the predicted energy loads to the planning tool.

7. The central plant optimization system of claim 6 , wherein the planning tool is configured to use optimization results for reporting and analysis of the system.

8. The central plant optimization system of claim 1 , further comprising a database configured to store shared data for the system.

9. The central plant optimization system of claim 1 , wherein the planning tool is configured to receive initial data from an external source to be used for generating the model of the central plant.

10. The central plant optimization system of claim 1 , wherein the planning tool is configured to allow user interaction, via a user interface, for designing the central plant.

11. A method for designing and operating a central plant, the method comprising:
generating, by a planning tool, a model of the central plant, the model of the central plant comprising one or more subplant models representing equipment of the central plant and one or more element links representing connections between the equipment of the central plant;
receiving, by a central plant controller, the model of the central plant from the planning tool;
combining, by the central plant controller, the model of the central plant with timeseries data comprising a timeseries of predicted energy loads to be served by the equipment of the central plant;
receiving, by an optimization platform, a model of the central plant combined with timeseries data;
automatically constructing, by the optimization platform, an optimization problem for the central plant using the model of the central plant and the timeseries data, wherein automatically constructing the optimization problem comprises automatically determining, by the optimization platform, a number of decision variables to include in the optimization problem based on the model;
solving, by the optimization platform, the optimization problem to determine an optimal allocation of the energy loads across the equipment of the central plant at each of a plurality of time steps within an optimization period;
providing, by the optimization platform, optimization results comprising the optimal allocation of the predicted energy loads to the central plant controller;
using, by the central plant controller, the optimization results to operate the equipment of the central plant to achieve the optimal allocation of the predicted energy loads.

12. The method of claim 11 , wherein the timeseries data further comprise a timeseries of prices for one or more resources consumed by the equipment of the central plant.

13. The method of claim 11 , further comprising combining, by the planning tool, the model of the central plant with plan information comprising predetermined energy loads for each time step of the optimization period.

14. The method of claim 11 , further comprising:
receiving, by the optimization platform, from the planning tool, the model of the central plant combined with the plan information;
solving, by the optimization platform, the optimization problem using the plan information in place of the timeseries data in response to a request from the planning tool.

15. The method of claim 11 , wherein receiving the model of the central plant occurs on user demand.

16. The method of claim 11 , further comprising providing, by the central plant controller optimization results comprising the optimal allocation of the predicted energy loads to the planning tool.

17. The method of claim 16 , further comprising using, by the planning tool, optimization results for reporting and analysis of the system.

18. The method of claim 11 , further comprising storing, by a database, shared data for the system.

19. The method of claim 11 , further comprising receiving, by the planning tool, initial data from an external source to be used for generating the model of the central plant.

20. The method of claim 11 , further comprising allowing, by the planning tool, user interaction, via a user interface, for designing the central plant, wherein the model is based on the user interaction via the user interface.

Assignees

• Johnson Controls Tech Co

Inventors

• Craig Peter A
• Jaeger Michael F
• Kummer James P
• Tumey Carol T

Classifications

• H02J2103/30

  Simulating, planning, modelling, reliability check or computer assisted design [CAD] of electric power networks · CPC title

• H02J13/1311

  using the power network as support for the transmission · CPC title

• H02J3/003

  Load forecast, e.g. methods or systems for forecasting future load demand · CPC title

• G05B13/04 Primary

  involving the use of models or simulators · CPC title

• G05B13/042 Primary

  in which a parameter or coefficient is automatically adjusted to optimise the performance · CPC title