基于MATLAB光伏储能并网的直流微电网系统的研究与设计.docVIP

摘要

太阳能???发电是???通过逆???变器来???实现交???直流电???能变换???，再通过???与负载???相连实???现整个???太阳能???发电系???统的设???计。在???太阳能???发电系???统中，???逆变器???是重要???的组成???元件，???也是连???接光伏???板与箱???式变电???站的核???心元件???。对逆???变器的???控制，???能够更???好的实???现直流???侧太阳???能与电???能的转???换，也???能够实???现交流???侧逆变???器对小???区特定???负荷进???行供电???。除此???之外，???对于微电网系统的储能装置进行研究，了解储能特性，进一步提高了整个微电网系统的完整性。

本文是以小区建立光伏微电网系统为研究对象，通过对比光伏发电与大电网供电经济性，确立了光伏发电系统的优势。本文通过研究光伏储能微电网相关技术，利用MATLAB软件，建立光伏电池、蓄电池以及逆变器和负荷构成独立运行的微电网发电系统，采用双闭环PI控制策略，仿真结果验证了所建立的微电网具有良好的运行特性。

关键词：太阳能；微电网；蓄电池；光伏电池；PI控制

Abstract

SolarpowergenerationistorealizetheconversionofACandDCpowerthroughtheinverter,andthenconnecttotheloadtorealizethedesignoftheentiresolarpowergenerationsystem.Inthesolarpowergenerationsystem,theinverterisanimportantcomponentandthecorecomponentconnectingthephotovoltaicpanelandthebox-typesubstation.ThecontroloftheinvertercanbetterrealizetheconversionofsolarenergyandelectricenergyontheDCside,andcanalsorealizetheACsideinvertertosupplypowertospecificloadsinthecommunity.Inaddition,theenergystoragedeviceofthemicrogridsystemisstudiedtounderstandthecharacteristicsofenergystorage,whichfurtherimprovestheintegrityoftheentiremicrogridsystem.

Thispapertakestheestablishmentofphotovoltaicmicro-gridsysteminresidentialareaastheresearchobject,andestablishestheadvantagesofphotovoltaicpowergenerationsystembycomparingtheeconomicsofphotovoltaicpowergenerationandlargegridpowersupply.Inthispaper,thephotovoltaiccells,batteries,invertersandloadsformanindependentmicrogridpowergenerationsystem,andthedoubleclosed-loopPIcontrolstrategyisadopted.Thesimulationresultsverifythattheestablishedmicrogridhasgoodoperatingcharacteristics.

Keywords:solarenergy;microgrid;battery;photovoltaiccell;PIcontrol

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30037第1章引言 1

82061.1研究背景 1

155711.2国内外研究现状 1

3551.2.1国内研究现