Environmental Emission Based Multi-objective Economic Dispatch Scheduling with Demand Flexibility in Micro-grid

This paper presents an optimized framework for multi-objective environmental emission based economic generation schedule with demand flexibility in micro-grid. The environmental pollution produced by conventional generators is a major problem in power system operation. Economic scheduling of generators optimizes only cost without any concern on emissions. Multi-objective economic emission dispatch optimizes the cost and emission in a compromised manner. Paradigm is changing in modern power system with management from demand side. Demand flexibility provides an optimal scheduling by balancing load demand and generation of various generators. Renewable energy sources like wind turbine generators and photo-voltaic module are main generation sources in micro-grid. In this paper, test system with three conventional generators, a wind turbine generator and a photo-voltaic module has been proposed. Two scenarios have been presented with and without renewable energy sources. Demand flexibility effects on cost and emission demonstrates the effectiveness of management from demand side. Multi-objective economic dispatch results shows the improvement considering all sources and considering all sources without renewable energy sources.