含抽水蓄能的电力系统优化调度研究.doc

学号：常州大学毕业设计（论文）（2012届）题目学生学院专业班级校内指导教师专业技术职务校外指导老师专业技术职务二○一二年六月PAGEIV含抽水蓄能的电力系统优化调度研究摘要：我国电力系统中火电机组比重较大；同时电网负荷升高，峰谷差加大，使得火力发电系统的运行成本增加，给电力系统经济安全、机组合理调度提出了更高的要求。抽水蓄能以抽水、发电进行削峰填谷的独特运行方式实现电力负荷的调节和系统的安全稳定运行，是现代电力系统有效的调节工具。本文以含抽水蓄能的电力系统，基于混合整数规划方法，建立了含抽水蓄能的电力系统优化调度的数学模型。结合机组运行的经济性和安全性考虑了多个约束条件，以最小发电成本为目标函数，本文采用10台火电机组和1台抽水蓄能机组的算例进行仿真，将火力发电系统在加入抽水蓄能前后发电成本以及出力情况进行对比分析，研究火力发电系统中加入抽水蓄能所带来的容量效益，体现了抽水蓄能电站的削峰填谷的功能。关键词：抽水蓄能；混合整数规划；火力发电系统；优化调度；削峰填谷OptimalSchedulingResearchofPowerSystemwithPumpedStorageStationAbstract：Thereisalargeproportionofthermalpowerunitsinpowersystemofourcounty.Meanwhile,loadanddifferencebetweenthepeakandvaleinthepowergridhavebecomegreater,whichwillincreasetheoperationcostsofpowersystem.Sotheeconomicsecurityofpowersystemandreasonableschedulingofunitsneedtobepaidmoreattention.Pumpedstoragestationhasuniqueoperatingmodeofpumpingandpowergenerationtotakeadvantageofpumpedstorageforpeakloadshaving.Itachievespowerloadregulationandasafeandstableoperationofpowersystem.Itisalsoaneffectiveregulatorytoolofmodernpowersystem.Thispapersetsupmathematicalmodelofoptimalschedulingofpowersystemincludingpumpedstorage.Themixedintegerprogrammingmethodhasbeenadopted.Combiningwiththeunitoperationofeconomyandsafety,itconsidersmultipleconstraintconditions.Ittreatstheminimumcostofpowergenerationastheobjectivefunction.Inthispaper,oneexampleofthe10thermalpowerunitsandapumpedstorageunitcarriesonthesimulationcalculation.ItcomparesandanalyzespowergenerationcostsandPowergenerationsituationofthermalpowersystembeforeandafterjoiningpumpedstorage.Itstudythermalpowergenerationsystemaddingthecapacitybenefitsofpumpedstorage,andreflectsthefunctionofpeakloadshavingofpumpedstoragestation.Keywords：pumpedstorage；mixedIntegerprogramming；thermalpowersystem；optimalScheduling；peakloadshaving目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc327302627"摘要PAGEREF_Toc327302627\hIHYPERLINK\l"_Toc327302628"目录PAGEREF_Toc327302628\hIIIHYPERLINK\l"_Toc327302629"1绪论PAGEREF_Toc327302629\h1HYPERLINK\l"_Toc3273026