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Generation Dispatch Techniques for Remote Communities With Flexible Demand
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DOI：10.1109/TSTE.2015.2408335.png)
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Remote communities are typically isolated from the main electricity grid and require local generation, most often relying on expensive resources (especially diesel) to supply their load. The economic and logistical aspects are such that there is value in exploring different approaches to reduce the consumption of diesel and to increase the energy input from local renewables. In this paper, we focus on using the virtual storage capabilities of the demand side to perform diesel generation optimization. Specifically, we revisit the economic dispatch (ED) problem by adapting it to the presence of flexible demand. We compare three different formulation approaches: 1) where demand is reallocated heuristically to shave the peak; 2) where the reallocation is itself optimized; and 3) that attempts to optimize the overall efficiency of the diesel units. A case study based upon a remote microgrid shows that flexible demand can decrease diesel fuel consumption in an economically meaningful manner, which is still significant given the costs associated with the purchase and haulage of diesel to these small communities.
Keyword:
Demand response (DR)
distributed generation
economic dispatch (ED)
microgrids
power generation economics
remote communities
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