Low-level optimization - Johnson Controls - LIT-12013967 - Software Application - OBEM Central Utility Plant Optimization - 4.3

Low level optimization determines within each group of equipment, what runs and what the optimal setpoints to execute to the allocated load. Plant Optimizer determines this in the mass, momentum, and energy (MME) solver. MME calculates temperature in (Tin), temperature out (Tout), pressure in (Pin), pressure out (Pout), and flow (F) for each device in the system. Any commands from Plant Optimizer are verified to result in conservation of energy, mass, and momentum. Equipment selection is determined using discrete programming, specifically modified branch and bound, to minimize power. Equipment selection and setpoints are determined using a mixed-integer optimization algorithm to minimize the operating cost of the plant while protecting the health of the system and equipment.