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Loss-Impact Modification Of Locational Marginal Prices Using The Imputation Of Dissipation Power

Posted on:2010-11-16Degree:MasterType:Thesis
Country:ChinaCandidate:Z R HuangFull Text:PDF
GTID:2132360275482009Subject:Power system and its automation
Abstract/Summary:PDF Full Text Request
The practice of electricity market is the inevitable trend of electric industry in developing, which results in the change of the conventional power system in organization, and causes a series of new problems such as determining the nodal price component. Although the losses cost in nodal price is only a small fraction of the full cost, the economic signals it provides have great meaning in improving the utilization efficiency of the transmission network, and guiding the investment in generation resources, as well as planning the construction of transmission network.Firstly, this paper expounds the nodal price theory in detail, introduces the use and development trend of nodal price system in abroad regional electricity market, and analyses two typical improved nodal price methods that considering losses cost. Use this as a foundation, a new idea that applying the imputation of impedance branch dissipation power to determine the corrected nodal price considering transmission losses is advanced.Based on the new idea, the paper presents a novel algorithm of incremental transmission loss that based on the theory of imputation of an impedance-branch dissipation power. Independent of the change of the slack bus, the algorithm can reflect the influence of losses by every bus including slack, and set up the incremental relationship between every bus in system and impedance-branch dissipation physically.Combining the classic nodal price model, the algorithm is applied to Corrected nodal price considering transmission losses. Simulation results in IEEE-30 bus test system indicate that the revised nodal price can reflect the influence of losses by each bus in different location, and the economic signal including losses modification can improve the resource arrangement with less transmission losses and more effective energy transmission.
Keywords/Search Tags:Locational marginal price, Incremental transmission losses, Losses modification, Loss cost, Dissipation power component, Electricity market
PDF Full Text Request
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