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Coordinated Control Method Of Multi-microgrid Based On MAS And CA

Posted on:2018-03-18Degree:MasterType:Thesis
Country:ChinaCandidate:X Y LiuFull Text:PDF
GTID:2322330518457523Subject:Computer software and theory
Abstract/Summary:PDF Full Text Request
At present,the micro-grid control research in the world is being carried out in full swing.However,in the future development,the application of large multi-microgrid distribution systems consisting of many sub-microgrids which can provide electrical energy will be highly competitive.This puts more demands on the power and voltage control of the microgrid.Although many scholars at home and abroad have carried out some research,but the research on power control of microgrid is still a bottleneck.The input and output power and voltage of various micro-sources are unstable in the microgrid,so it is important to propose an effective power/voltage control method.The content of this paper is based on the power and voltage distributed coordination control problem of multi-microgrid.Firstly,this paper discusses the basic concepts of microgrid,introduces the research situation of microgrid,builds the basic microgrid architecture,and introduces the active and reactive power characteristics of microgrid.This paper introduces the characteristics of MAS and CA and their application in the present,and then pointed out that it is used in the power grid to monitor the micro-grid voltage variation within the feasibility of the internal.Secondly,this paper studies the advantages and disadvantages of MAS and CA in real application,and proposes a MAS and CA based distributed coordination control model for multi-microgrid.Then the power self-optimizing control strategy of multi-microgrid in islanding mode and grid-connected mode is described in detail.Thirdly,in the algorithm part,considering that the microgrid system is more complicated than the simple single microgrid system,the system contains a variety of micro-sources.The interactive function in MAS is accomplished not only by the exchange of information between each agent and the surrounding environment,but also by the interaction among different Agents in the same working system.In this paper uses a hybrid algorithm combining Q-Learning and PS,and the Knowledge Query and Operational Language is used as the communication language which can make each agent carry on more effective communication.Finally,this paper establishes a simulation model of multi-microgrid which based on PSCAD.The hybrid algorithm of Q-learning and PS is applied to the MAS and CA-based double layer multi-microgrid control strategy.Simulation results show that the method is effective for the voltage/power regulation of the multi-microgrid.
Keywords/Search Tags:MAS, CA, multi-microgrid, Q-learning, PS algorithm
PDF Full Text Request
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