Technology Description

The microgrid control system (MCS) designed by GE for this demonstration will manage and control the complicated interactions among heat and electrical power generation, power demand, energy storage, and power distribution and delivery. The MCS can optimize energy usage and offers energy security by managing backup power operation for critical loads in the event the microgrid disconnects from the bulk grid (islanded). The advanced control and optimization functions include optimal dispatch of distributed generation (DG) power resources (including renewable and energy storage), load shedding, islanded operation, and energy efficiency optimization by simultaneously controlling DG for maximum efficiency and managing the major electrical loads. The important technology contributions to improving energy efficiency and increasing energy security are (1) the ability to include various assets such as renewables, combined heat and power units, electrical and thermal storage, and controllable loads as energy management resources; (2) the ability to include future predicted values of loads, renewable generation, and fuel and electricity prices in the optimization process; (3) the ability to automatically commit / de-commit distributed energy resources (DER) as needed; and (4) the use of a predictive control strategy to address renewable generation intermittency. The system considers and combines all of these activities into an optimal dispatch model that provides advisory to operators or automated control of the micorgrid system.