Central plant control system with device geometric modeling and control
A method for operating a subplant included in a central plant includes obtaining instruction-based equipment models associated with devices included in the subplant and comprises operating points that define an operation of the devices, generating, for each instruction-based equipment models, a geometric equipment model using the operating points from a particular instruction-based equipment model, the geometric equipment model defining at least one operating domain associated with the particular device, merging geometric equipment models to form a geometric subplant model, the geometric subplant model defining an operation of the subplant comprising devices associated with the geometric equipment models, receiving a desired operating point comprising a load value, determining, relative to the desired operating point, a nearest operating point on the geometric subplant model, setting the nearest operating point on the geometric subplant model as an actual operating point, and operating the subplant at the actual operating point for the subplant.
1. A method for operating a subplant included in a central plant, the method comprising:
obtaining one or more instruction-based equipment models, wherein each of the one or more instruction-based equipment models is associated with a particular device included in the subplant and comprises a plurality of operating points that define an operation of the particular device;
generating, for each of the one or more instruction-based equipment models, a geometric equipment model using the plurality of operating points from a particular one of the one or more instruction-based equipment models, the geometric equipment model defining at least one operating domain associated with the particular device;
merging two or more geometric equipment models to form a geometric subplant model, the geometric subplant model defining an operation of the subplant comprising one or more devices associated with the one or more geometric equipment models;
receiving a desired operating point comprising a load value;
determining, relative to the desired operating point, a nearest operating point on the geometric subplant model;
setting the nearest operating point on the geometric subplant model as an actual operating point; and
operating the subplant at the actual operating point for the subplant.
2. The method of claim 1 further comprising repeating the obtaining, generating, merging, receiving, determining, and setting steps for one or more subplants included in the central plant to determine the actual operating point for each of the one or more subplants.
3. The method of claim 1 , wherein generating the geometric equipment model comprises using a plurality of time-series data points to generate the geometric equipment model.
4. The method of claim 3 , wherein the plurality of time-series data points further comprises grouping data gathered from a real-time data collection process.
5. The method of claim 1 , wherein merging the two or more of the geometric equipment models to form the geometric subplant model further comprises summing each operating point included in the one or more geometric equipment models.
6. The method of claim 1 , further comprising defining two or more destinations of an amount of a particular resource produced by the subplant by appointing a portion of the amount to each of two or more destinations, wherein a summation of each portion is the amount of the particular resource.
7. The method of claim 1 , wherein determining the nearest operating point on the geometric subplant model further comprises determining a Euclidean distance value between the desired operating point and each of the plurality of operating points included in the geometric subplant model.
8. The method of claim 7 , wherein determining the nearest operating point on the geometric subplant model further comprises determining an operating point with a minimum Euclidean distance value.
9. A controller for at least one subplant comprising one or more devices, the controller comprising:
one or more processing circuits comprising one or more processors and memory storing instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
generating, for each of the one or more devices included in each of the at least one subplant, a geometric equipment model defining an operation of a particular one of the one or more devices;
retrieving one or more instruction-based equipment models from an instruction-based model database, wherein each of the one or more instruction-based equipment models is associated with a particular device included in one of the at least one subplant and comprises a plurality of operating points that defines an operation of the particular device;
generating, for each of the one or more instruction-based equipment models, the geometric equipment model using the one or more instruction-based equipment models retrieved from the instruction-based model database;
merging at least two geometric equipment models generated by the controller to generate a geometric subplant model, wherein the geometric subplant model is associated with one of the at least one subplant; and
receiving a desired operating point and determining, on the geometric subplant model, a nearest operating point relative to the desired operating point.
10. The controller of claim 9 , wherein the operations further comprise receiving the geometric subplant model and determining two or more destinations of an amount of a resource produced by the one or more devices by appointing a portion of the amount to each of the two or more destinations.
11. The controller of claim 9 , wherein the plurality of operating points comprise a plurality of sample points gathered by a real-time data collection process.
12. The controller of claim 9 , wherein the operations further comprise determining a Euclidean distance value between the desired operating point and each of the plurality of operating points included in the geometric subplant model.
13. The controller of claim 12 , wherein operations further comprise determining the nearest operating point with a minimum Euclidean distance.
14. A method for operating one or more subplants included in a central plant, the method comprising:
obtaining one or more instruction-based equipment models, wherein each of the one or more instruction-based equipment models is associated with a particular device included in one of the one or more subplants and comprises a plurality of operating points that define an operation of the particular device;
generating, for each of the one or more instruction-based equipment models, a geometric equipment model using the plurality of operating points from a particular one of the one or more instruction-based equipment models, the geometric equipment model defining at least one operating domain associated with the particular device;
merging two or more geometric equipment models to form a geometric subplant model, the geometric subplant model defining an operation of a particular one of the one or more subplants;
receiving a desired operating point comprising a load value;
determining, relative to the desired operating point, a nearest point on the geometric subplant model;
setting the nearest point on the geometric subplant model as an actual operating point; and
operating at least one of the one or more subplants such that the at least one of the one or more subplants produces an amount of a particular resource defined by the actual operating point.
15. The method of claim 14 , wherein generating the geometric equipment model comprises using a plurality of time-series data points to generate the geometric equipment model.
16. The method of claim 14 , wherein merging the two or more geometric equipment models to form the geometric subplant model further comprises summing each of the plurality of operating points included in the two or more geometric equipment models.
17. The method of claim 14 , further comprising defining two or more destinations of a portion of the amount of a particular resource produced by the one or more subplants by appointing the portion of the amount to each of the two or more destinations, wherein a summation of each portion is the amount of the particular resource.
18. The method of claim 14 , wherein determining the nearest point on the geometric subplant model further comprises determining a Euclidean distance value between the desired operating point and each of the plurality of operating points included in the geometric subplant model.
19. The method of claim 18 , wherein determining the nearest point on the geometric subplant model further comprises determining an operating point with a minimum Euclidean distance value.
20. The method of claim 14 , further comprising repeating the obtaining, generating, merging, receiving, determining, and setting steps for each of the one or more subplants included in the central plant to determine the actual operating point for each of the one or more subplants.