Central plant control system with geometric modeling of operational sequences

A controller for equipment, the controller 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:

• obtaining a first geometric model for a first set of equipment and a second geometric model for a second set of equipment, the first set of equipment and the second set of equipment defined by a sequence of operation for the equipment;
• locating, on the first geometric model, a first nearest operating point based on a desired operating point;
• generating a first modified geometric model by removing, from the first geometric model, one or more operating points that do not satisfy the first nearest operating point;
• generating a merged geometric model by merging the first modified geometric model with the second geometric model;
• locating, on the merged geometric model, a second nearest operating point based on a modified desired operating point;
• and
• operating the first set of equipment and the second set of equipment in accordance with the first nearest operating point and the second nearest operating point.

A system for serving one or more loads of a building, the system comprising:

• a plurality of sets of equipment that operate to serve the one or more loads of the building, the plurality of sets of equipment comprising a first set of equipment and a second set of equipment defined by a sequence of operation;
• and
• a controller 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:
• obtaining a first geometric model for the first set of equipment and a second geometric model for the second set of equipment;
• locating, on the first geometric model, a first nearest operating point based on a desired operating point;
• generating a first modified geometric model by removing, from the first geometric model, one or more unsatisfactory operating points that do not satisfy the first nearest operating point;
• generating a merged geometric model by merging the first modified geometric model with the second geometric model;
• locating, on the merged geometric model, a second nearest operating point based on a modified desired operating point;
• and
• operating the first set of equipment and the second set of equipment in accordance with the first nearest operating point and the second nearest operating point.