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Research On Microgrid Control Strategy Including Distributed Generations Interfaced With Inverters

Posted on:2014-02-05Degree:MasterType:Thesis
Country:ChinaCandidate:C ZhangFull Text:PDF
GTID:2232330395988994Subject:Motor and electrical appliances
Abstract/Summary:PDF Full Text Request
New energy is attracting more and more attention with the increasingly serious current situation of energy crisis and environmental protection along with more than one accidence in traditional centralized power grid. Distributed generations gathering the dispersed clean energies and turn it into electrical power that can be consumed locally, have a number of advantages, such as high reliability and everywhere independence,and is improving rapidly in scientific research and technological development. Microgrid benefits for both utility grid and consumer, because it has a full use of distributed energy by combining the power generator and the energy storage unit. It is one of the effective styles of using distributed energies, and the combination covers the shortage of intermittency and randomness. It is studied In this paper that control strategied of the microgird with inverter interfaced distributed generations, focusing on the stability of voltage magnitude and frequency during the islanding mode,and a simulation is done on MATLAB/Simulink.Firstly, this paper starts with the introduction of hardware architecher which has some different units and connecting ways,and it is discussed on the market condition and technical hot points of wind power, photovoltaic power and battery.Secondly, the advantage and disadvantage in kinds of control strategies are discussed from the perspective of management, and related formulas are derived, a solution is proposed for both reliability and adaptability.Thirdly, the droop control model by two ways are built, and the results are compared based on the deviation of voltage magnitude and frequency.Finally, a microgrid simulation with the depart model is completed, and a battery with power adjustment is added to solve the power unbalance, proved to be effective to stabilize microgrid voltage and frequency. Except for the simulation, a test platform is built for30kVA permanent magnet synchronous generator to perform the experiment about wind power generation.
Keywords/Search Tags:Microgrid, Islanding mode, Distributed generator, Inverter, Droop control
PDF Full Text Request
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