Multi-Objective Optimization of Operation Scheduling for Micro-Grid Systems

With the popularity of different power generators in an electric micro-grid system, their operation scheduling as the load demand changes becomes an important task. Besides satisfying load balance constraint and generator’s rated power, several other practicalities, such a limited use of grid power and restricted ramping of power output from generators, arise and must be considered during the operation scheduling process. In this paper, we consider the operation scheduling from a two-objective (cost and emission) point of view and advocate the use of heuristics in updating the optimized solutions for better speed of search, consistency and practicalities. Our procedure proposes to develop knowledge bases from a series of prior demand-wise optimization runs and then utilizes them to modify optimized solutions. Results on island and grid connected modes and several pragmatic formulations of the micro-grid operation scheduling problem clearly indicates the merit of the proposed procedure.