|
|
|
| Application of evidence theory for aging degree evaluation in pumping station |
| Chen Jian1,Xu Yanru2,Yu Yonghai3,Wang Jianming4,Zhang Houwen5 |
| (1.State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan,Hubei 430072,China;2.Ningxia Water Investment Group Co.Ltd.,Yinchuan,Ningxia 750001,China;3.College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing,Jiangsu 210098,China;4.Administration of Dayudu Pumping Station in Shanxi Province,Yuncheng,Shanxi 044600,China;5.Administration of Fenghuangjing Irrigation and Drainage Pumping Station in Anhui Province,Chaohu,Anhui 238341,China） |
|
|
|
|
Abstract To increase the credibility of determining the aging degree grade of pumping station,a new pumping station aging degree evaluation model based on evidence theory was built.Taking two typical pumping stations as examples,from which aging information was extracted for each index.According to pumping station aging evaluation standard,three experts were asked to give score separately on each aging degree grade for basic indices of the index system and each score as one piece of evidence after being normalized.According to the Dempster combination rule,pieces of evidence were composited to get credibility allocation of each basic index on framework of recognition as one piece of evidence.Pieces of evidence were composited in accordance with this rule and evidence synthesis formula with weighting factor,credibility allocation on framework of recognition of integrated management,electrical and mechanical equipment,buildings,metal structures and the whole pumping station figured out.Then ultimate score of pumping station aging degree was calculated according to a given formula,and aging degree grade of pumping station was found out in contrast with a given table.Compared with results from model of fuzzy-AHP comprehensive evaluation model,to some index on frame of discernment,the maximum credibility is 2.4 times as much as the maximum fuzzy membership,and both of them correspond to the same aging degree grade,except evidence conflict situation which is difficult to resolve.It showed that application of evidence theory can increase determination of pumping station aging degree grade.Each piece of evidence is necessary to be normalized before evidence combination,which can well solve situation in which the composited credibility is likely to be greater than 1.
|
|
Received: 18 June 2010
Published: 30 May 2011
|
|
|
|
| [1]陈坚 李琪 许建中 等.中国泵站工程现状及"十一五"期间泵站更新改造任务[J].水利水电科技进展,2008,(2):84-88.[2]徐艳茹.[D].武汉:武汉大学水利水电学院,2010.[3]曾庆祝.农村机电泵站存在问题及其对策[J].排灌机械,2006,24(1):46-49.[4]William A Irvin.Pump station control system and method, US,6178393Bl[P].2001 -01 -23.[5]姚凯文 张洪波 常洪军 等.模糊数学在水轮泵站老化评估中的应用[J].中国农村水利水电,2006,(6):.[6]Harris C A.Schibonski J A,Templeton F E,et al.Pump system diagnosis, US,6721683B2[P].2004 -04-13.[7]Icaga Y.Fuzzy evaluation of water quality classification[J].Ecological Indicators,2007,7(3):710 -718.[8]陶丛丛 徐波 王校利.D-S证据理论在大坝安全监控中的应用[J].红水河,2010,29(2):34-37.[9]Ayag Z.A fuzzy AHP-based simulation approach to concept evaluation in a NPD environment[J].HE Transactions,2005,37(9):827 -842.[10]Parikh C R,Pont M J,Jones N B.Application of Dempster-Shafer theory in condition monitoring applications:A case study[J].Pattern Recognition Letters,2001,22(6/7):777-785.[11]杨志荣 周建中.一种基于D-S证据理论的水轮机故障诊断方法[J].水电能源科学,2009,27(2):152-154.[12]大禹渡泵站安全鉴定委员会.大禹渡泵站安全鉴定报告书[R].北京:中国灌溉排水发展中心,2009..[13]安徽省江淮泵站安全鉴定中心.安徽省凤凰颈排灌泵站安全鉴定报告[R].北京:中国灌溉排水发展中心,2006. |
|
|
|
