Development of a new loss allocation method for a hybrid electricity market using graph theory |
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Authors: | Valerie S.C. Lim John D.F. McDonald Tapan K. Saha |
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Affiliation: | 1. National Electricity Market Management Company, Brisbane, Australia;2. Department of Electrical and Electronic Engineering, Imperial College, UK;3. School of Information Technology and Electrical Engineering, University of Queensland, Staff House Road, Axon Bulding Room 406, St. Lucia, Brisbane, Queensland 4072, Australia |
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Abstract: | This paper introduces a new method for allocating losses in a power system using a loop-based representation of system behaviour. Using the new method, network behaviour is formulated as a series of presumed power transfers directly between market participants. In contrast to many existing loss allocation methods, this makes it easier to justify the resulting loss distribution. In addition to circumventing the problems of non-unique loss allocations, a formalised process of loop identification, using graph theory concepts, is introduced. The proposed method is applied to both the IEEE 14-bus system and a modified CIGRE Nordic 32-bus system. The results provide a demonstration of the capability of the proposed method to allocate losses in the hybrid market, and demonstrate the approach's capacity to link the technical performance of the network to market instruments. |
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Keywords: | Loop method Power flow tracing Transmission loss allocation Counter flow Bilateral transactions |
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