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Micro-Grid Optimization as Grid - Connected in Pool-Based Power Market Under Pay-as-Bid and Uniform Pricing
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Abstract
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This paper presents optimal operation of hybrid fuel cell/diesel generator/battery as known Micro-grid in pool market under various power pricing strategies such as uniform pricing and pay ad bid pricing. The present paper focuses on the comparison of two different strategy rules applied in a centralized wholesale power market: uniform pricing and pay-as-bid. The market consists of an Independent System Operator (ISO) and Dispersed Energy Resources as DER in Micro-grid (MG) and Main Utility Grid (UG) as Power Generators (Players) who submit their offers to the ISO in the form of curves. The ISO purchases energy from the Independent Power Producers (IPPs) in order to cover the electricity demand. The power producers do not know the costs, the offers and the payoffs of their competitors and therefore they use an adaptive learning tool to compensate their lack of knowledge trying to maximize their revenue. The effect of the power pricing strategy on electricity price, in a environment of market consisting of power producers with similar attributes, i.e. cost, capacity range, adaptation and reaction capability, is analyzed for both two pricing strategy systems. This paper presents a multi-objective formulation for optimal sizing of micro grid (MG) in distribution systems, under two strategy of pool power market in order to maximize net present worth (NPW). The implemented technique is based on Genetic Algorithm (GA) and weight method that employed to obtain the best compromise between these costs. Simulation performed on test distribution system to demonstrate the effectiveness of the proposed procedure. Copyright (C) 2012 Praise Worthy Prize S.r.l. - All rights reserved.
Keywords:
Micro-Grid
Distribution Generation
Electricity Market
Pool Market
Pay as Bid
Uniform Pricing
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