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1、电力市场下的无功优化CHANGSHAUNIVERSITYOFSCIENCE&TECHNOLOGY毕业设计(论文)题目:电力市场下的无功优化电力市场下的无功优化电力市场下的无功优化摘要随着电力市场在世界各地的不断改革,无功电压辅助服务作为一项重要的辅助服务,从无偿提供到有偿服务已经成为电力市场发展的趋势,无功电价的提出也势必对系统运行产生影响,进而对无功规划产生影响。传统的电力企业必须打破发、输、配电一体化的电力服务结构。无功的控制在电力市场条件下作为一种辅助服务,是使电网中的输电交易能够顺利进行的一个重要条件。对地区电网进行实时无功优化具有如下优点:提高系统的安全性;改善系统中无功的
2、分布,是系统各个节点电压保持在一个较好的水平;降低系统网损,使得系统的运行费用降低。本文以屏南县电网作为例子,在计及电价的基础上,分析电力市场条件下的无功优化。首先,根据电网主接线图画出结构简图,根据给定数据确定线路和变压器型号;其次,计算线路和变压器参数,再用BPA软件进行潮流计算;再次,提出无功优化数学模型,对屏南县电网进行无功优化计算;最后,分析在计及无功电价的情况下,无功优化前后屏南县电网获得了多少经济效益。关键词:电力市场;降低网损;无功优化电力市场下的无功优化REACTIVEPOWERMARKETOPTIMIZATIONABSTRACTWiththeelectricity
3、marketaroundtheworldcontinuetoreform,reactivepowerandvoltagesupportservicesasanimportantsupportservices,fromfreetopaidservicesprovidetheelectricitymarkethasbecomethedevelopmenttrendoftheproposedreactivepowerpriceisboundtohaveonthesystemrunningImpact,thenanimpactonthereactivepowerplanning.Enterp
4、risesmustbreakthetraditionalpowergeneration,transmissionanddistributionservicestointegratedpowerstructure.Reactivepowercontrolinpowermarketconditionsasasupplementaryservice,istomakethetransmissiongridinthetransactionscanbeanimportantconditionforthesmooth.Regionalpowergridinrealtimereactivepower
5、optimizationhasthefollowingadvantages:improvedsecurityofthesystem;toimprovethedistributionsystem,reactivepower,asystemvoltageofeachnodetomaintainagoodlevel;reducesystempowerloss,loweroperatingcostsmakethesystem.Inthispaper,asanexamplePingnangrid,takingintoaccountthereactivepowerpricebasedonthea
6、nalysisoftheelectricitymarketreactivepoweroptimizationunderthecondition.First,accordingtoapowergridstructureofthemainwiringdiagramofthepicture,accordingtothegivendatatodeterminethelineandtransformermodels;Second,thecalculationoflineandtransformerparameters,thenBPApowerflowcalculationsoftware;ag
7、ainproposedmathematicalmodelofreactivepoweroptimizationofPingnanCounty,thereactivepoweroptimization;Finally,theprice,takingintoaccountthecaseofreactivepower,reactivepowerbeforeandafteroptimizationPingnanhowmucheconomicgain.Keyword