水电站维护自动化研究与实践
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摘要
继控制自动化、管理信息化与办公自动化后,设备维护信息化与自动化已成为水电站建设和改造的焦点。自20世纪90年代以来,一些大型电厂陆续开展“状态检修”系统建设,在机组状态监测、分析及诊断方面取得了较大的进展,但由于认识、技术和管理多方面的原因,没有达到预定的目标。
     为了明确水电站维护领域研究、开发和建设的最终目标,加速维护现代化,提出了水电站维护自动化的概念。
     首先对维护自动化进行了定义,即由维护系统自动地完成各种维护行为。这些行为包括自动状态监测、自动维护决策和自动维护实施。
     给出了系统运行模型,模型清楚地描述了系统运动状态和设备健康状况之间的关系。控制自动化就是根据我们的愿望自动地控制系统的状态,使系统优质地完成指定的任务;而维护自动化的目的是自动地维护设备,使设备在健康状态下运行。此外还对维护系统、控制系统和管理系统的集成进行了描述。
     根据系统构成、行为描述及评价关系模型,制订了一套水电设施自动监测、分析与诊断的方法:
     (1)运动状态监测与分析。在控制系统的基础上,补充监测设施的运行状态,并采用越限判断、梯度计算、关联分析等方法,捕捉设施健康状态异常信息。
     (2)设施性能评价。根据完成规定任务过程中的运行状态变化曲线,计算设施完成任务的性能指标,并通过与标准和规程中的性能要求对比,以及与历史上同样条件下完成同样任务质量的对比,检测设施功能的失效和健康状态的降低。
     (3)故障树分析。以在运行状态分析和设施性能评价中检测出来的异常现象为线索,根据故障树模型,查找并列出嫌疑设备清单。
     (4)故障或降级诊断。采用模型参考故障诊断、签名分析等方法,对故障和健康状况降低进行诊断定位。
     在掌握设备健康状况的基础上,综合水情、电力市场、物资供应采购与仓储、检修人力与物力、检修场地等信息,考虑水利与航运调度等约束条件,以可靠性为中心,以经济效益最优为目标,做出检修决策,包括:维修设备、维修等级、维修时间。
     目前,虽然维护实施还需要由人工来完成,但实施方案和工艺的设计可以由计算机专家系统根据检修规程自动地完成,在数字机组上实施和优化,并采用三维可视化仿真等虚拟现实手段培训、指导检修人员。同时,长江电力已开展水轮机叶片打磨与补焊机器人的研究,可以预计将来在虚拟机组上设计好的检修实施方案可以直接输出给机器人,由机器人实施。
     中国长江电力股份有限公司与华中科技大学合作,自2001年开始开展最优维护信息系统研究,目前已在葛洲坝电站建立了10台机组和4台变压器的健康状况监测系统和远程监测与诊断系统,并采用三维可视化仿真技术建立了数字机组。该系统在葛洲坝电站的设备分析、故障预警与检修中发挥了重要作用。为实现维护自动化迈出了坚实的一步。
Condition Based Maintenance (CBM) becomes the focus area after controlautomation and office automation in hydro power plants.Remarkable progress has beenachieved in condition monitoring.However,CBM is only one of the advancedmaintenance strategies.
     In order to clarify the goal of research and accelerate the modernization inmaintenance domain,maintenance automation is proposed.
     Maintenance automation is firstly defined as that maintenance system is developed toautomatically carry out maintenance activities for human being.These activities includeautomatic condition monitoring,automatic maintenance decisions and automaticmaintenance actions.
     A system operation model is given.It clearly illustrates the relationships betweensystem operating states and facility health conditions.The goal of maintenance automationis to automatically maintain facilities in good conditions as well as that of controlautomation is to automatically regulate system states to fellow the expected orbit and tocomplete the appointed tasks.The integration of maintenance system with control systemand management system is described.
     A condition monitoring secheme is proposed on base of the diagram of systemconstitution and its behavior descriptions:
     -Operating states measurement and analysis.The operating states are integratedlymeasured.They are compared with their limits.An abnormal event is recorded when thestate(s) exceed the limits.
     -Performance evaluation.The operation space of a turbine-generator set is dividedto operating sections such as stand-still,start-up,generation with steady load,etc.Theturbine generator set and its equipments accomplish specific task(s) in each operatingsection.The operating section is automatically identified.The performances of tasksaccomplishment are evaluated at the end of each operating section.The performanceindices are compared with the specifications in standards to detect unacceptable event(s).The variation trend of each performance index under similar operating section is made assoon as a new index is figured out or periodicly to detect performance degradationevent(s).
     -Fault tree analysis.All the possible causes of any abnormal event are searchedand listed on base of fault tree.
     -Fault or degradation diagnosis.The model based fault detection and signatureanalysis approaches are employed to analyse the suspicious equipments in order to locatethe fault or degradation.
     Although the maintenance has to be carried out by human being at this moment,theplan and the technics of maintenance can be concepted and optimized on the virtualmachine realized by use of 3D simulation techniques.The conception results can bedemonstrated on the virtual machine to direct the maintenance actions.Furthermore,China Yantze Power Cooperation Limited (CYPC) has started the research on the robotsfor turbine repair.So the conception results will be directly output to robots andaccomplished by robots in the future to realize complete maintenance automation.
     A joint study on optimal maintenance information system has been started betweenCYPC and Huazhong University of Science and Technology since 2001.The on-linecondition monitoring systems of 10 turbine generator sets and 4 transformers,the remotemonitoring and diagnosis system,and a digital emulator of turbine generator sets havebeen in service in Gezhouba Hydro Power Plant.These systems play more and moreimportant role in the analysis,diagnosis and maintenance in Gezhouba.Their successfulapplication makes significant contributions to maintenance automation。
引文
[1]中国长江电力股份有限公司,水电厂检修策略研究,项目编号:长电科2307020002,2008年。
    [2]王海,水轮发电机组状态监测、诊断及综合试验分析系统研究,华中科技大博士论文,2001年。
    [3]中国长江三峡工程开发总公司,加拿大魁北克水电公司考察报告,电力生产管理体系研究,2007年5月。
    [4]中国长江电力股份有限公司,伊泰普(巴西)电站和古里(委内瑞拉)电站考察报告,电站生产管理和检修维护方式研究,2006年12月。
    [5]中国长江电力股份有限公司,美国大古里电站和加拿大邱吉尔瀑布电站推力轴承运行维护考察报告,机组检修研究,2007年7月。
    [6]中华人民共和国电力行业标准D4838-2003,发电企业设备检修导则,中国电力出版社,2003年11月。
    [7]中华人民共和国电力行业标准DL/r1066—2007,水电站设备检修管理导则,中国电力出版社,2007年11月。
    [8]刘晓亭,水力机组现场测试手册,水利电力出版社,1993年。
    [9]北京奥技异电气技术研究所,水力机组状态监测技术及实用化发展,中国水力发电工程学会2006年年会暨学术交流会设备状态监测技术论文集,宜昌—三峡,pp.139,2006年7月。
    [10]冉毅川,丁万钦,陈泽阳,TN8000状态监测系统在三峡左岸电站的应用,第一届水力发电技术国际会议论文集(1),中国电力出版社,pp.964,2006年10月。
    [11]杨小松,郑松远,彭水水电站机组状态监测系统设计与规划,第一届水力发电技术国际会议论文集(1),中国电力出版社,pp.1016,2006年10月。
    [12]杨廷勇,吴信伟,瞿卫华,张凯,左岸电站主设备状态趋势分析系统的开发与应用,第一届水力发电技术国际会议论文集(1),中国电力出版社,pp.1022,2006年10月。
    [13]熊浩,状态监测和诊断技术在三峡电厂的应用,中国水力发电工程学会2006年年会暨学术交流会设备状态监测技术论文集,宜昌—三峡,2006年7月,pp.59。
    [14]林礼清,陈伟,任继顺,林贵海,王利霞,水口水电厂设备状态监测与诊断系统,中国水力发电工程学会2006年年会暨学术交流会设备状态监测技术论文集,宜昌—三峡,pp.81,2006年7月。
    [15]艾友忠,葛洲坝电厂最优维护方法研究与实践,华中科技大学博士学位论文,2007年。
    [16]李朝晖,叶鲁卿,水电厂智能控制·维护·管理集成系统,水电能源科学,1998年,No.2,pp.71~72.
    [17]余刃、叶鲁卿、李朝晖,智能控制-维护-管理集成系统(ICMMS)及其在电力系统中的应用--(四)ICMMS框架下水电厂维护子系统的分析与设计方法,电力系统自动化,Vol.24(3),2000年,pp.33-36.
    [18]Zhang,Z.;Li,Z.;Huo,Z.;CMMS and its applications in power system,International journal of power and energy system,2006,Vol.26(1),p 75~82.
    [19]J.B.Leger,B.Iung,A.Ferro De Beca,J.Pinoteau,An innovative approach for new distributed maintenance system:application to hydro power plants of the TEMAFEX project,Computers in Industry,Vol.38(2),1999,p.138~148.
    [20]Poll,Hans Gunther;Zanutto,Jose Carlos;Ponge-Ferreira,Walter,Hydraulic power plant machine dynamic diagnosis,Shock and Vibration,Vo1.13(4-5),2006,p 409-427.
    [21]Xi-De Lai,Analysis and estimation of hydraulic stability of francis hydro turbine,Journal of Hydrodynamics,Vol.16 (2),April 2004,p.194~200.
    [22]王海,郑莉媛,水轮发电机组低频振动异常信号分析研究,水力发电,2003年, Vol.29(3),p.31~34。
    [23]Grosse,G.;Kopf E.,Shaft vibration diagnosis in condition-based monitoring,International Journal on Hydropower&Dams,Vol.3(3),1996,p.27~31.
    [24]王海,郑莉媛,水轮发电机组轴心轨迹自动识别方法研究,水力发电学报,2002年,Vol.78(3),p.73~80 。
    [25]桂中华,水轮机故障智能诊断及振动数字化预测研究,华南理工大学博士学位论文,2005年。
    [26]盛鹏,何永勇,褚福磊,水轮机空蚀在线监测与诊断系统[J].水利水电技术,2002年,Vol.33,No.7,pp.17-20.
    [27]B.BOJA,Vibro-acoustic Method for Diagnosing Cavitation of Hydro Turbines, EWRHI, Vol.18 (12), June 1997.
    [28] J.M. DOREY, E.LAPERROUSAZ, F.AVELLAN and P.DUPONT etc., Cavitation Erosion Prediction on Francis Turbines-Part3 Methodologies of Prediction", E.Cabrera et al. (eds.), Hydraulic Machinery and Cavitation. Kluwer Academic Publishers. Printed in the Netherlands, pp. 564-573, 1996.
    [29] Xavier Escaler, Eduard Egusquiza, etc., "Cavitation Erosion Pridiction in Hydro Turbines from Onboard Vibration", 22nd IAHR symposium on Hydraulic Machinery and System, Stockholm-Sweden, June29-July 2, 2004
    [30] Mehamed Farhat, Paul Bourdon, etc., "Improving Hydro Turbine Profitablity by Monitoring Cavitation Aggressiveness", CEA Electricity 99 Conference & Exposition, Vancouver, March 29-31, 1999.
    [31] Branko Bajic. Multidimensional Diagnostics of Turbine Cavitation, Journal of Fluids Engineering, DECEMBER, Vol. 124, 2002
    [32] Bourdon, P., Simoneau, R., and Avellan, F., Erosion Vibratory Fingerprint of Leading Edge Cavitation of a NACA Profile and of a Francis Modeland Prototype Hydroturbine, Bubble Noise and Cavitation Erosion in FluidSystems, ASME, New York, FED-vol.176, pp.51-67, 1993.
    [33] Yumei Wen, Manus Henry, Time Frequency Characteristics of the Vibroacoustic Signal of Hydrodynamic Cavitation, Journal of Vibration and Acoustics, vol.124, pp.469-475, Oct. 2002.
    [34] Huixuan Shi, Zhaohui Li and Yaxiong Bi, An On-line Cavitation Monitoring System for Large Kaplan Turbines, 2007 IEEE PES General Meeting, 2007
    [35] Branko Bajic, Cavitation diagnostics and monitoring, INTERNATIONAL WATER POWER & DAM CONSTRUCTION, February 2003.
    [36] Denis, E.; Fortin, T., Tools and methods for generator monitoring and maintenance, VGB PowerTech, Vol.80 (9), 2000, p.26-28.
    [37] Xuan, M. Tu; Simond, J.-J.; Wetter, R.; Keller, S., A novel air-gap monitoring system for large low speed hydro-generators, 2006 IEEE Power Engineering Society General Meeting, PES, Jun 18-22 2006, Montreal, QC, Canada.
    [38] Major, Claude; Allen, Gilles; Houle, Yves, Monitoring the air gap, International Water Power and Dam Construction, Vol.50(4), April 1998, p.40-41.
    [39] Li, Shunyuan, Chow, Jennifer M.Y., Partial discharge measurements on hydro generator stator windings case studies, IEEE Electrical Insulation Magazine, Vol.23(3),2007,p.5-15.
    [40]Hudon,Claude;Belec,Mario,Partial discharge signal interpretation for generator diagnostics,IEEE Transactions on Dielectrics and Electrical Insulation,Vol.12(2),April 2005,p.297~319.
    [41]万伟江,王伟,李成榕,顾鹏,赵建英,超高频法在发电机局部放电检测中的应用,高电压技术,Vol.30(9),2004年9月,19.38~40。
    [42]张毅刚,郁惟锗,黄成军,左问,发电机局部放电在线监测研究的现状与展望,高电压技术,Vol.28(12),2002年12月,p.32~35。
    [43]杨合民,李朝晖,王宏,基于局部放电监测的水轮发电机主绝缘诊断分析系统,电力系统自动化,2004年,Vol.28(15),pp.61~66。
    [44]陈化钢,电力设备预防性试验方法及诊断技术,中国科学技术出版社,2001年。
    [45]谈克雄,朱德恒,李福祺,高文胜,高胜友,发电机变压器放电故障诊断的基础研究和应用,电力系统自动化,2004,Vol.28(15),pp.53~60。
    [46]Osama A Mohammed,Jorge Mundulas,Improvements in RF monitoring system on generators,IEEE Transactions on Energy Conversion,Vol.4,No.2,June 1989.pp.237~243.
    [47]K.Itoh,Y.Kaneda,S.Kitmura,K.Kimura,A.Nishimura,T.Tanaka,H.Tokura,I.Okada,New noise rejection techniques on pulse-by-pulse basis for on-line partial discharge measurement of turbine generators,IEEE Transactions on Energy Conversion,Vol.11,No.3,September 1996,pp.585~594.
    [48]B.A.Lloyd,S.R.Campbell,G.C.Stone,Continuous on-line partial discharge monitoring of generator stator winding,IEEE Transactions on Energy Conversion,Vol.14,No.4,December 1999,pp.1131.
    [49]J.W.L Simpson,R.C Tychsen,Q.Su,T.R Blackbum,R.E.James,Evaluation of partial discharge detection techniques on hydro-generators in the Australian snowy mountains scheme,IEEE Transactions on Energy Conversion,Vol.10,No.1,March 1995,pp.18~24.
    [50]Advances in online monitoring and localization of partial discharges in large rotating machines,IEEE Transactions on Energy Conversion,Vol.19,No.1,March 2004,pp.53~59.
    [51]余维坤,水轮发电机局部放电在线监测方式的选择,水电站机电技术,2008年第6期。
    [52]黄成军,郁惟镛,GabePaolettiPE,巍伟,局部放电在线监测及其在大型电机中 的应用,大电机技术,2000年第6期。
    [53]陈宏福,黄成军,钱勇,江秀臣,发电机局部放电评估方法,高电压技术,2007年第8期。
    [54]许坤,周建华,茹秋实,周茁,变压器油中溶解气体在线监测技术发展与展望,高电压技术,2005年第8期,pp.30~32。
    [55]中华人民共和国电力行业标准DL/T 722-2000,变压器油中溶解气体分析和判断导则,中国电力出版社,2000年。
    [56]M.D.Judd,L.Yang,and I.B.B.Hunter,"Partial discharge monitoring for power transformers using UHF sensors Part 1:Sensors and signal interpretation," IEEE Elect.Insul.Mag.,vol.21,no.2,pp.5-13,Mar./Apr.2005.
    [57]M.D.Judd,G.P.Cleary,and C.J.Bennoch,"Applying UHF partial discharge detection to power transformers," IEEE Power Eng.Rev.,vol.22,no.8,pp.57-59,Aug.2002.
    [58]T.Huecker and J.Gorablenkow,"UHF partial discharge monitoring and expert system diagnosis," IEEE Trans.Power Delivery,vol.13,no.4,pp.1162-1167,Oct.1998.
    [59]de Meel,H.W.;Westermann,G.D.,Hydro plant cost savings using risk management methodologies,International Journal on Hydropower and Dams,Vol.7(3),2000,p.72~76.
    [60]Rengarajan,S.;Bhoomaiah,A.;Kishore,K.KrishnaAcoustic partial discharge measurements for transformer insulation - an experimental validation,IEE Conference Publication,v 5,n 467,1999,p.288~291.
    [61]盛梦周,李朝晖,刘明军,变压器超高频检测信号处理单元的设计,湖北电力,Vol.30(1),2006年2月,pp.3 l~33。
    [62]张江,李朝晖,王宏,基于超声波法的变压器局部放电监测系统设计,湖北电力,Vol.30(1),2006年2月,pp.28~30。
    [63]Chen,Li-Jung;Tsao,Ta-Peng;Lin,Yu-Hsun,New diagnosis approach to epoxy resin transformer partial discharge using acoustic technology,IEEE Transactions on Power Delivery,Vol.20(4),p.2501~2508.
    [64]Pompili,M.;Mazzetti,C.;Bartnikas,R.,Partial discharge pulse sequence patterns and cavity development times in transformer oils under ac conditions,IEEE Transactions on Dielectrics and Electrical Insulation,Vo1.12(2),April 2005, p.395~403.
    [65]杨启平,薛五德,蓝之达,变压器局部放电在线监测技术的研究,变压器,2008年第10期。
    [66]华中科技大学,251B局放试验及空载运行在线监测结果分析报告,2006年。
    [67]武汉海泰电力科技公司,1B、14B、18B在线监测系统运行报告,2009年。
    [68]华中科技大学,NGC2发电机局部放电在线监测与分析系统现场试验报告,2007年。
    [69]Zhaohui Li,Youzhong Ai,Huixuan Shi,“Optimal Maintenance Information System of Gezhouba Hydro Power Plant”,IEEE 2007 Power Engineering Society General Meeting,June 24-28,Tampa,FL,USA.
    [70]YE Luqing,LI Weidong,LI Zhaohui et al.,An integral criterion for appraising the overall quality of a computer-based hydro turbine governing system,IEEE Transactions on Energy Conversion,Vol.10(2),1995,pp.376-38 I.Science Citation Index,No.4D,1995,pp.7229.
    [71]Schade,H.;Scheil,H.,Cost-effective operation of generators by optimizing maintenance cycles,International Journal on Hydropower and Dams,Vol.4(4),1997,p.83~87.
    [72]Lunney,H.W.M.,The longevity of Australian hydro-electric installations.Journal of Electrical and Electronics Engineering,Australia,Vol.20 (3),2000,p 225-229.
    [73]Muller,F.;Eickhoff,H.,Efficient monitoring and diagnosis for hydro powerplants,International Journal on Hydropower & Dams,Vol.3(4),1996,p.31~34.
    [74]Sandy Dunn,“Condition Monitoring in the 21 st Century”,http://www.plant-maintenance.corn/articles/ConMon21 stCentury.shtml.
    [75]H.Scheil,The hydro digest,International Water Power and Dam Construction,Vol.52 (12),December 2000,p.24~27.
    [76]Mino,Y.;Ooura,Y.;Matsue,Y.,Effective maintenance for hydro generators,International Journal on Hydropower and Dams,Vol.9(2),2002,p.66~69.
    [77]曾洪涛,“基于Community Intelligence的水电企业模型及应用研究”,华中科技大学博士学位论文,2006年。
    [78]陈燚涛、李朝晖,水轮发电机组三维动态仿真研究,电力系统自动化,2001年,Vol.25(8),pp.49~52。
    [791郭江,李朝晖,陈燚涛,水轮发电机组及其操作可视化仿真系统,中国电机工 程学报,2005年,Vol.25(7),pp.137~143。
    [80]陈燚涛,李朝晖,基于数字化模型的水轮机调速系统状态监测与分析,电力系统自动化,2005年5月10日,Vol.29(9),pp.72~76。
    [81]陈燚涛,李朝晖,面向检修的水电设备数字化建模,电力系统自动化,2005年,Vol.29(7),pp.79~83。
    [82]王跃武,李朝晖,陈燚涛,面向检修的水电厂设备技术资料多媒体管理系统,水电自动化与大坝监测,Vol.27(2),2003年4月,pp.66~69。
    [83]Jiang Guo,Zhaohui Li,Visualization of a hydro-electric generating unit and its applications,Proceedings of the IEEE International Conference on Systems,Man and Cybernetics,v3,Oct 5-8 2003,Washington,DC,United States,p.2354-2359.
    [84]Jiang Guo,Zhaohui Li,Yitao Chen,Yuewu Wang and Shijie Chen,Virtual Environment Conception for CBM of Hydro-electric Generating Units,Proc.of PowerCon 2002,IEEE PES,IEEE Catalog Number:02EX572,ISBN:0-7803-7459-2,Oct.2002,pp.1957~1961.
    [85]卢万里,面向状态检修的水电机组三维可视化仿真研究,武汉大学硕士学位论文,2005年。
    [86]吴正佳,杜义贤,陈鹏,基于Pro/Engineer的水电机组仿真技术研究,水力发电,2006年02期。
    [87]王百众,罗亚林,方昊,马莉,张洁,王若冰,谢敏,核电站维修的三维数字化动态管理,核动力工程,Vo1.26(2),2005年4月,p.196~198。
    [88]Vinson,Robert N.;Maynard,Richard L.,Development of a hydro operator/maintenance apprenticeship training programProceedings of the International Conference on Hydropower - Waterpower,v 2,1995,p 1234-1242.
    [89]汪鑫,李朝晖,王宏,水轮发电机状态监测与诊断系统的研究,大电机技术,2004年第2期,pp.1~6。
    [90]史会轩,大型水轮机空化在线监测与分析—方法及应用研究,华中科技大学博士学位论文,2008年。
    [91]Wu Daohu,Li Zhaohui,Acoustic session,International Water Power & Dam Construction,2005,Vol.57(1):pp.31 ~33.
    [92]LI Zhaohui et al.,Real time simulation and performance measurement of hydro-turbine governing systems,La Houille Blanche,No.7,1998,pp.32~37.
    [93]Zhaohui Li,Yitao Chen and Jiang Guo,Integrated Maintenance Features of Hydro Turbine Governors,Proc.of PowerCon 2002,IEEE PES,IEEE Catalog Number:02EX572,ISBN:0-7803-7459-2,Oct.2002,pp.1984~1988.
    [94]LI Zhaohui et al.,Model based fault detection for hydro turbine governing systems,Proceedings of CESA'96-IMACS & IEEE Multiconference,Symposium on Control,Optimization and Supervision,Lille-France,July 9-12,1996,Vol.1 of 2,pp.701~706.
    [95]LI Zhaohui et al.,An orthogonal test approach based control parameter optimization and its application to a hydro-turbine governor,IEEE Transactions on Energy Conversion,Vo1.12(4),1997,pp.388-393.Science Citation Index,No.1D,1998,pp.833.Engineering Index,Vol.97,No.7,1998,pp.2575,no.032999.
    [96]胡国,李朝晖,杨兴斌,曾洪涛,葛洲坝电厂19F机组励磁系统状态监测与诊断,水电自动化与大坝监测,Vol.29(2),2005年4月,pp.23~27,41
    [97]罗云,李朝晖,面向维护的水力发电设备远程实时监视方法,水电自动化与大坝监测,Vol.31(1),2007年2月,pp.57~60.
    [98]郭江,曾洪涛,李朝晖,水电厂维护分布式协同决策支持系统研究,中国电机工程学报,Vol.25(15),2005年8月,pp.127~132