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Research On Energy Dispatch Management And Optimal Operation Of Microgrid

Posted on:2018-08-06Degree:MasterType:Thesis
Country:ChinaCandidate:Y ZhuFull Text:PDF
GTID:2322330536477608Subject:Control theory and control engineering
Abstract/Summary:PDF Full Text Request
The microgrid is a new type of supplementary energy source for large scale power grids,which can effectively alleviate the energy shortage.In this paper,the problem of energy dispatching management and optimal operation of island microgrid is considered,and the characteristics of wind resource,power supply and system performance are fully considered.And the AHP method is used to solve the problem that it is difficult for the decision maker to select the optimal scheduling plan from the Pareto optimal set.The details are summarized as follows:Firstly,the research status of microgrid technology at home and abroad is introduced,in this paper.Secondly,the model including wind generators,PV arrays,diesel generators and Batteries,system operation strategy of island microgrid system,system multi-objective optimization model and Pareto optimal set evaluation are established.The two kinds of energy management strategies of systems are established with consideration of performance of four kinds of power supplies comprehensively: they are energy management strategy with diesel generator or battery group as the main power to follow the fluctuation of the net load.A model of multi-objective optimal allocation of the island microgrid system is established.The power supply installation cost,replacement cost,fuel cost and pollutant discharge cost are taken as the economic performance index,and the short rate of load capacity as the power supply reliability index.Analytic Hierarchy Process and model of multi-objective optimal allocation are applied in a comprehensive evaluation model of system optimal scheduling scheme.In the analysis of simulation,a typical island microgrid system is used as an example to analyse the comprehensively performance of two kinds of system indicators,with simulation of different power management strategies,the different combinations of power supply,different scheduling strategies and different performance index.The simulation results show that the proposed scheme is effective and practical for the performance evaluation of the island microgrid system.
Keywords/Search Tags:island microgrid, strategy of energy management, configuration of optimizal operation, system of evaluation, analytic hierarchy process(AHP)
PDF Full Text Request
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