欢迎来到天天文库
浏览记录
ID:34702283
大小:318.52 KB
页数:4页
时间:2019-03-09
《浅析水电站能量指标的影响因素分析》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10卷第6期南水北调与水利科技Vo1.10No.62012年12月South-to-NorthWaterTransfersandWaterScience8LTechnologyDec.2012doi:10.3724/SP.J.1201.2012.06097水电站能量指标的影响因素分析李慧,黄强,秦大庸(1.中国水利水电科学研究院水资源所,北京100038;2.西安理工大学水利水电学院,西安710048)摘要:水电站运行多年后,特性值会发生改变以安康水电站为例,在分析水电站能量指标影响因素的基础上,通过在变化条件下建立等出力调节模型,对水电站的能量指标进
2、行了复核。结果显示,径流系列、下游水位与流量关系、水位与库容关系这3种因素的变化使得安康水电站的保证出力分别减少0.05万kW、一O.2万kw,0.07万kW,多年平均发电量分别减少1.52亿kW·h、一0.O2亿kW·h、0.05亿kW·h。进一步分析发现,当天然入库径流量减少时,水电站能量指标相应减小;当同一流量对应的下游水位呈下降趋势时,能量指标增大;当水库同一水位对应的库容减小时,能量指标减小;在3种因素共同作用下,安康水电站能量指标减小。关键词:安康水电站;能量指标;复核;保证出力;发电量;水位库容;水位流量中图分类号:TV737;TK71文献
3、标识码:A文章编号:1672—1683(2012)06—0097—03AnalysisofInfluenceFactorsontheEnergyIndexofHydropowerStationLIHui,HUANGQiang,QINDa-yong(1.ChinaInstituteofWaterResourcesandHydropowerResearch,Beijing100038,China;2.InstituteofWaterResourcesandHydro-electricEngineering,Xi'anUniversityofTechnolog
4、y,Xi'an710048,China)Abstract:Afteryearsofoperationforthehydropowerstation,itsenergyindexneedstoberecheckedsincethecharacteristicvaluesofthehydropowerstationhavechanged.Onthebasisofanalysisoftheinfluencingfactorsontheenergyindexofthehy—dropowerstation,anoutputadjustmentmodelwasdev
5、elopedundervariableconditionstorechecktheenergyindexoftheAn—kanghydropowerstation.Theresultsshowedthatthevariationsofthreefactors,includingtherunoffseries,relationshipbe—tweendownstreamwaterlevelandflowdischarge,andrelationshipbetweenwaterleve1andreservoircapacity,reducetheguar—a
6、nteedoutputofhydropowerstationby0.5thousandkw,一2thousandkw,and0.7thousandkw,respectively,andtheaverageannualenergyoutputhadreducedby152millionkw·h,-2millionkw·h,and5millionkw·h,respectively.Moreover,theim—pactsofthecombinedactionsofthethreefactorsontheenergyindexoftheAnkanghydrop
7、owerstationwereanalyzed.There—suitssuggestedthat(1)theenergyindexdecreaseswiththedecreasingofnaturalincomingrunoff;(2)theenergyindexincrea—senwiththedecreasingofdownstreamwater1evelunderthesameflowdischargescenarios;(3)theenergyindexdecreaseswiththedecreasingofreservoircapacityun
8、derthesamewaterlevelscenarios;and(4)thee
此文档下载收益归作者所有