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时间:2020-03-28
《考虑可中断负荷的微网能量优化.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第24卷第1期电力系统及其自动化学报Vo1.24No.12012年2月ProceedingsoftheCSU—EPSAFeb.2012考虑可中断负荷的微网能量优化言大伟,韦钢,陈眩姿,张鑫。(1.上海电力学院上海市电站自动化技术重点实验室,上海200090;2.上海浦海求实电力新技术有限公司,上海20009O)摘要:建立能量模型协调优化微网可靠性与经济性对系统经济效益的提高至关重要。考虑在并网模式和孤岛模式下都将可中断负荷纳入微网能量管理,优化各分布式电源DG(distributedgeneration)出力,并网时还包括微网与主网交换功率,使
2、微网投资运行费用和补偿停电损失费用之和最小。该模型不但考虑了微型燃气轮机热(冷)电联供的发电特性,而且将热(冷)能供给优化转化为电能供给优化统一求解,回避冷热价格对模型求解影响,简化微网综合供能模型。以一个微网系统算例验证了模型和算法的有效性,计算结果表明该方法不但能确保微网负荷的可靠、经济供电,也有利于主网整体经济供电能力的提高。关键词:微网;可靠经济;能量优化;冷热电联供中图分类号:TM311文献标志码:A文章编号:1003—8930(2012)01—0088—06MierogridEnergyOptimizationConsidering
3、InterruptibleLoadYANDa—wei,WEIGang,CHENXuan—zi。ZHANGXin(1.ShanghaiKeyLaboratoryofPowerStationAutomationTechnology。ShanghaiUniversityofElectricPower,Shanghai200090,China;2.ShanghaiPUHAIQIUSHIElectricPowerHighTechnologyCompany,Shanghai200090,China)Abstract:Establishingenergymo
4、deltocoordinateandoptimizethereliabilityandeconomyofmicrogridsystemissignificanttoenhanceeconomicbenefitsofthesystem.Asconsideringthattheinterruptibleloadcanbein—corporatedintothemicrogridenergymanagementunderbothgrid-connectedmodeandislandmode,themodelcanoptimizedifferentki
5、ndsofDGoutputtomakelowestcostsumoftheinvestment,operationandinterrup—tion,whichshouldincludetheexchangingpowerbetweenmicrogridnetworkandmainnetworkunderthegrid—connectedmode.Inthismodel,notonlythegenerationcharacteristicsofheat,coolandpowercogenerationsystemofmicrogastrubine
6、areconsidered,butalsotheoptimizationofbothheatandcoolenergyisconvertedtotheoptimizationofpowersupplyfortheunifiedsolving.Thus,thecoldandheatpricecanbeavoidedtoin—fluencethemodelsolution,whichsimplifiesthecomprehensivepower—supplymodelofmicrogridsystem.Then,theeffectivenessof
7、themodelandthealgorithmisverifiedbyacaseofmicrogridsystem.Theresultsshowthatnotonlythereliable,economicpowersupplyofmicrogridloadcanbeensured,butalsothewholee—conomicpowersupplyofmainnetworkcanbeenhanced.Keywords:microgrid;reliabilityandeconomy;energyoptimization;heat,coolan
8、dpowercogenerationsystem微网是具有自我控制、保护和管理能力的微利用DG是其最大优势嘲。微网是主网的有益补型配电系统,向用户同时
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