ABB励磁常用维护

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1、ABBUNITROL5000UNITROL5000励磁系统操作培训运行及维护UN5000桌面模型机-功率图-手操器-调试及维护工具“CMT”LearningCenterforPowerElectronicsandMVDriveCH-5300Turgi/SwitzerlandUNITROL5000Hands-onTrainingPage13ABBUNITROL5000练习1根据贵厂发电机参数绘制功率图目标:经过练习后可安全操作设备Afterthisexerciseyouareabletoshowthesafeoperatingareaofthesynchronous

2、machine步骤:Procedure:贵厂发电机参数表·Listthedataofthesynchronousmachineinyourplantsuchas:额定功率RatedPowerSn…………………………………..MVA机端电压GeneratorterminalvoltageUGn…………………………………kV频率Operatingfrequencyfn…………………………………..Hz功率因数Nominalpowerfactorcosj………………………………直轴同步电抗SynchronousreactanceXd…………………………………..pu空载励磁电

3、流NoloadfieldcurrentIfo…………………………………...A额定励磁电流RatedfieldcurrentIfn……………………………………A·Showonthepowerchartthesafeoperatingareausingthepicturebelow·下面的图中示出功率图的安全操作区域-Readtheratedfieldcurrentfromthepowerchartandcomparethevaluewiththedatastatedabove?-从功率图中读出额定电流值,和以上的参数值比较.-Readthemaximumpossible

4、reactivepowerat0.6puactivepowerintheunderexcitedareaiftheloadanglelimiterissetto75°?--Readthegeneratorcurrentwithratedfieldcurrentandatnoactivepower?UNITROL5000Hands-onTrainingPage13ABBUNITROL5000-读出在有功为零,额定励磁电流时的定子电流-Readtheloadangleatratedpower?-读出额定功率下的功角UNITROL5000Hands-onTrainingPag

5、e13ABBUNITROL5000Exercise2OperateUNITROL5000usingthelocaloperatingpanel练习2使用现地操作面板操控UNITROL5000Objective:AfterthisexerciseyouarefamiliarwiththelocaloperatingpaneloftheUNITROL5000System目标:练习完成后应熟悉UINITROL5000系统的现地操作面板-Howtooperatetheexcitationsystemlocallyusingthepanelkeys+-如何使用面板键现地操作励磁系

6、统-Howtoreadsignals-如何读取信号-Howtodisplayalarms-如何显示报警-Howtoresetalarms-如何复位报警-HowtochecktheARCnetnodes-如何检查ARCnet地址码Procedure:步骤：-Selectlocalcontrolmode-选择现地控制模式-ChangeoverfromAUTOtoMANUALoperatingmode-从AUTO操作模式切换至MANUAL操作模式-SelectAUTOmode-选择AUTO模式-Startexcitationsystemandchangethesetpoint

7、ofthevoltageregulatorfrom100%upto104%-启动励磁系统，在100%到104%范围内改变电压调节器设定值-Decreasethesetpointdownto85%.Whatcanyouobserve?-设定值降到85%，可以观察到什么？-Displaythefollowingsignalsonthedisplay:-在面板上显示下面的信号：UNITROL5000Hands-onTrainingPage13ABBUNITROL5000GeneratorterminalvoltagekV机端电压Generato