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Research On The Method Of Microgrid Energy Management Based On MAS In Power Market

Posted on:2018-02-03Degree:MasterType:Thesis
Country:ChinaCandidate:Y ZengFull Text:PDF
GTID:2322330542479612Subject:Electrical engineering
Abstract/Summary:PDF Full Text Request
The microgrid can weaken the fluctuations impact of renewable energy power generation on the main grid,and optimizes the configuration of a variety of energy power generation,that makes it an important part of smart grid in the future.With the increase of the scale of microgrid,the increase of distributed generation number,and the reform of electricity market,the microgrid energy management system undertakes higher requirements for flexibility and economy under the premise of safety and reliability.Based on the theory of multi-agent system,this thesis studies the related content of energy management system of microgrid.First,an optimization algorithm based on bidding equilibrium with multi-agent system(MAS)for microgrid was proposed in the thesis,which utilized MAS to simulate the bidding program in microgrid,and supported the power trade with main grid.Furthermore,aiming at the described bidding algorithm,the microgrid uses clearing price related to the information of local power sources and main grid price to calculate power expense.The optimal operation decides the price of direct power supply in microgrid after the separation of transmission and distribution,and solves the profit distribution among different distribution generation investors in microgrid.Then,this thesis focuses on the reliability of microgrid,and a microgrid storage charging and discharging strategy considering the reserve capacity was proposed.In the microgrid,an energy management system was built based on the decentralized control structure,and the bidding is applied to make the generation plan of distributed generators.The storage device considers the predicted electricity price,the supply and demand situation in microgrid as well as the state of charge(SOC)and limitation of charging and discharging itself to decide the working mode and the charging or discharging power.The storage strategy can promote the reserve capacity and reliability of microgrid,and earn a profit by charging at lower price and discharging at higher price at the same time.
Keywords/Search Tags:microgrid, multi-agent, energy management system, storage device, power reliability
PDF Full Text Request
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