ABB励磁常用维护.doc

ABBUNITROL 5000UNITROL5000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”Learning Center for Power Electronics and MV DriveCH-5300 Turgi / Switzerland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After this exercise you are able to show the safe operating area of the synchronous machine步骤:Procedure:贵厂发电机参数表 List the data of the synchronous machine in your plant such as:额定功率Rated PowerSn.MVA机端电压Generator terminal voltageUGn kV频率Operating frequencyfn. Hz功率因数Nominal power factorcosj直轴同步电抗Synchronous reactanceXd.pu空载励磁电流No load field currentIfo.A额定励磁电流Rated field currentIfnA Show on the power chart the safe operating area using the picture below 下面的图中示出功率图的安全操作区域- Read the rated field current from the power chart and compare the value with the data stated above?- 从功率图中读出额定电流值,和以上的参数值比较.- Read the maximum possible reactive power at 0.6 pu active power in the under excited area if the load angle limiter is set to 75?- Read the generator current with rated field current and at no active power?- 读出在有功为零,额定励磁电流时的定子电流- Read the load angle at rated power?- 读出额定功率下的功角Exercise 2Operate UNITROL 5000 using the local operating panel练习2使用现地操作面板操控UNITROL5000Objective:After this exercise you are familiar with the local operating panel of the UNITROL 5000 System目标:练习完成后应熟悉UINITROL5000系统的现地操作面板- How to operate the excitation system locally using the panel keys+- 如何使用面板键现地操作励磁系统- How to read signals- 如何读取信号- How to display alarms- 如何显示报警- How to reset alarms- 如何复位报警- How to check the ARCnet nodes- 如何检查ARCnet地址码Procedure:步骤：- Select local control mode- 选择现地控制模式- Change over from AUTO to MANUAL operating mode- 从AUTO操作模式切换至MANUAL操作模式- Select AUTO mode- 选择AUTO模式- Start excitation system and change the setpoint of the voltage regulator from 100% up to 104%- 启动励磁系统，在100%到104%范围内改变电压调节器设定值- Decrease the setpoint down to 85%. What can you observe?- 设定值降到85%，可以观察到什么？- Display the following signals on the display:- 在面板上显示下面的信号：Generator terminal voltagekV机端电压Generator currentA定子电流Active power MW有功功率Reactive powerMvar无功功率Operating FrequencyHz工作频率Power factor功率因数Field currentA磁场电流AVR setpoint%AVR设定值- Switch on excitation and display the deviation between AVR and FCR output on the last line (8th line). Switch from AUTO to MANUAL if the difference is smaller then 0.5%. Observe the generator voltage carefully for changes when you change the operating mode.- 切换模式，在第八行显示AVR和FCR输出的差别。如果差值小于0.5%，从AUTO模式切换到MANUAL模式。切换操作模式时仔细观察发电机电压变化。- Switch the local panel to alarm display mode- 将现地操作面板切换到报警显示模式。- Read the alarms on the display- 读取面板上的报警值- Open one of the resistors (X05) on the FIO board. This will activate an additional alarm. Read this alarm and try to reset the alarm.- 断开FIO板上其中一个电阻（X05），将引发另外一个报警。读取报警值，并且复位。Exercise 3 Use of the service panel of UNITROL 5000 练习3 使用UNITROL5000的手操器Objective:- Operation of the excitation system by the service panel- Changeover from channel to channel and AUTO/MAN - Indication of the most important signals- Changing of parameters- Small software modification- Better understanding of the software目标：-使用手操器操控励磁系统-通道间切换，自动手动间切换-最重要信号的指示-改变参数-细微的软件修改-对软件更好的理解Procedure:步骤：- Close the field breaker and excite the unit. Dont use the local control panel.- 合磁场开关，起励单元。不使用现地操控制面板。- Display the field current in Amps, field voltage in percent and generator voltage in volts at the same time on the panel display. Write down the signal groups and numbers. - 在手操器上同时显示磁场电流的安培值，磁场电压的标幺值，定子电压的伏特值。写下信号的组和号。- Replace all the signals on the display. Display on the first line MODE INDICATION, the second line the converter temperature CONV1_1TEMP and the third line the reference minimum indication REF_MIN_ACTIVE. - 替代手操器上所有信号。第一行显示“MODE INDICATION”,第二行显示整流桥温度“CONV1_1TEMP”，第三行显示相关最低指示“REF_MIN_ACTIVE”。- Change the set point to its minimum by using the reference key on the service panel. - 使用手操器的相关键改变设定值到最低。- REF_MIN_ACTIVE should be logic one now. How does the software indicate this? - “REF_MIN_ACTIVE”现在应该是逻辑值。软件如何指示？- Changeover to manual mode by using the service panel.- 使用手操器切换至手动模式。- Decrease the set point in manual mode. What does happen with the signal MODE INDICATION?- 手动模式下降低设定值，“MODE INDICATION”信号有什么变化？- Change the ramp time RAMP_TIME1_REF_A for the set point of the AUTO mode to 20 seconds. - 设定自动模式下的上升时间“RAMP_TIME1_REF_A”为20秒。- Check your modification with the rise and lower buttons of the local control panel.- 使用现地控制面板的上翻，下翻按钮，检查所做修改。- Reduce the thermal set point of the field current limiter to 70% and the maximum value to 80%.- 降低磁场电流限制器的温度设定值到70%，最高为80%。- Make a software modification so that binary output DO06 indicates that auto and manual mode are balanced. Use the signal ready for transfer RDY XFER A M. Test your modification. - 修改软件，使DO06的二进制输出值指示自动和手动模式的平衡。使用信号“RDY XFER A M”试验所做修改。- Save the modification by using the function BACKUPSTOREMODE. - 使用“BACKUPSTOREMODE”保存修改。Exercise 4Use of the Commissioning and Maintance Tool “CMT”练习4使用调试维护工具“CMT”Objective:- Operation of the excitation system by CMT- Changing of parameters- Finding parameters in the software- Uploading and saving of parameters- Procedure to download a new parameter set- Use of the trending function- Uploading the fault logger目标：-使用CMT操控励磁系统-改变参数-软件中找参数-上传并保存参数-下载一个新的设定参数的步骤-使用趋势曲线功能-上传故障日志 Procedure:步骤：- Connect your laptop to the simulator and start CMT.- 连接笔记本电脑和装置，启动CMT。- Excite the unit by using CMT.- 使用CMT，起励。- Changeover from AUTO to MANUAL. What is the group and signal number you use to perform any changeover?- 从AUTO模式切换至MANUAL模式。您应该使用哪个组的哪个信号来完成模式的切换？- Upload the parameter set and save it under an appropriate name in the user directory C:/UN_5/USER.- 上传设定的参数，并命名保存至用户路径C:/UN_5/USER- Compare the parameter sets with the default values. - 比较参数设定值和默认值。- Open the parameter file UN5TMOD.qop and download the parameter. Save the new parameter in the FLASHPROM. Do not forget to enable the function blocks in parameter 2504. Write down a download procedure.- 打开参数文件“UN5TMOD.qop”，并下载参数，将新的参数保存到FLASH。不要忘记使能2504号参数，功能锁定。写下下载步骤。- Adjust the time.- 调整时间。- Try to find in the parameter list the signal number of the following signals:- 试着在参数表中找到以下参数的号- Generator voltage in percent-定子电压的标幺值。- Active power in MW-有功功率- AVR set point after the set point influence-AVR的设定点- Control voltage of the channel-通道的控制电压- MAN mode active-手动模式激活- Overexcited limiter active-过励限制器激活- Modify the software so that in case the maximum set point is reached LED8 of the local control panel lights up. Test your modification. - 修改软件，使现地控制面板的LED8，在设定值达到最大时亮起。试验此修改。- Use the trending to record the start sequence. Record the following signals:- 使用趋势曲线，记录起始时序。记录以下信号：- Generator voltage -定子电压- Excitation current-励磁电流- Control voltage-控制电压- Excitation on-起励- Soft start-软启动Scale the binary signals so that they appear on the top of the graph. Also avoid overlapping of all signals. 选定二进制信号，使它们在图中的上部显示。并且应避免所选信号的重叠。- Save the graph in the user directory.- 保存绘图至用户路径。- Use the data logger to record the start sequence. Record the following signals:- 使用数据日志记录起始时序。记录以下信号- Generator voltage -定子电压- Excitation current-励磁电流- Control voltage-控制电压Trigger the data logger as soon the generator voltage achieve 30% of its nominal value.只要定子电压到达正常值的30%，触发数据日志。- Simulate converter over temperature and upload the fault logger again.- 仿真整流桥超温，并再次上传故障日志。- Reset the fault by using CMT.- 使用CMT复位故障。练习5使用励磁控制终端“ECT”目的:- 使用ECT运行励磁系统- 如何使用仪表盘显示信号- 如何在参数和信号列表中找到信 号- 如何改变参数- 使用趋势曲线功能- 如何使用数据日志功能- 如何显示报警和故障信息- 如何复位故障信息步骤：使用操作界面（二级）- 连接笔记本电脑至UNITROL 5000桌面装置，启动ECT- 按照以下图示，根据您的发电机数据，标度仪表盘。定子电压有功功率无功功率定子电流磁场电流磁场电压- 使用ECT操作面板上的键投入断开磁场开关。- 投入励磁系统，观察定子电压和磁场电流。- 由AUTO模式切换至MANUAL模式，再返