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Microgrid Experimental Platform Construction And Energy Management Strategy

Posted on:2020-07-24Degree:MasterType:Thesis
Country:ChinaCandidate:Y M ZhangFull Text:PDF
GTID:2392330599960530Subject:Engineering
Abstract/Summary:PDF Full Text Request
China's traditional non-renewable energy reserves are limited,and more harmful substances are generated during the use process,which causes various human diseases,and our ecosystem is destroyed step by step.In the urgent situation of energy crisis and deteriorating ecological environment,distributed generation has many advantages such as low investment,low pollution,high energy efficiency,flexible operation mode and high reliability.Therefore,it is used as a renewable energy source.One form has been widely used in practice.At the same time,in order to solve the problem of incompatibility between the distribution network and the distributed power supply and improve the capacity of the large power grid to absorb new energy,the concept of the micro-grid is generated.At present,all countries in the world are carrying out micro-grid experimental platforms and demonstration projects.The main work of this paper is to build a micro-grid experimental platform and conduct micro-grid power management technology experiment based on the whole physical platform,and develop an experimental verification of the control strategy using RT-LAB simulation system.First of all,This paper introduces the research background of microgrid,summarizes the key experimental projects and demonstration projects of microgrid at home and abroad,and studies the microgrid system architecture,and builds a micro-grid full physical simulation platform.Hardware design,communication design and monitoring system design were carried out separately.In the context of the experimental platform,the energy management system optimization scheduling experiment is carried out,and the error of the output prediction accuracy of the renewable energy at different time scales and the deviation of the microgrid scheduling are analyzed.Secondly,the different operating modes and control strategies of the microgrid are introduced.Different control strategies adapt to different environments and requirements.The power controller design and voltage and current controller design provide theoretical support for the subsequent chapters.Finally,A distributed coordinated control method for island-type microgrid is proposed to ensure the reliability of distributed voltage and frequency control effects.The control strategy method model is constructed by RT-LAB simulation platform,and the model is processed.The simulation experiment analysis proves the effectiveness of the control strategy method and provides support for the theoretical method verification of the research group.
Keywords/Search Tags:microgrid, experiment platform, Optimal operation, RT-LAB simulation, technical application
PDF Full Text Request
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