基于点检的发电设备状态检修系统的实施

分类号UDC硕士学位论文基于点检的发电设备状态检修系统的实施学位申请人：董超学科专业：热能工程指导教师：陈刚教授论文答辩日期2007.1学位授予日期答辩委员会主席评阅人AThesisSubmittedinPartialFulfillmentoftheRequirementsfortheDegreeofMasterofEngineeringImplementationofsystemofCondition-basedMaintenanceofpowerequipmentsbasedonsequenceddetectionCandidate:DongChaoMajor:PowerEngineeringSupervisor:Prof.ChenGangHuazhongUniversityofScience&TechnologyWuhan430074,P.R.China随着电力企业的改革，发电企业面临越来越大的竞争压力，为了在保证安全的前提下，增加发电设备的可靠性和经济性，降低发电成本，特别是降低庞大的维修费用，变得日益迫切。本文以发电设备状态检修、点检制、数据分析处理技术的相关理论、研究方法、数学模型、状态检修理论、检修系统的设计与实现为研究课题，在充分了解国内外状态检修研究应用现状及发展动向的基础上，提出了基于点检的状态检修系统的问题。文中介绍了模糊评判、模糊识别的模糊数学方法和模糊聚类方法。通过对这些理论的分析，论述了在状态检修系统利用模糊数学方法对设备进行状态评价和故障模式识别的一般方法和模型。本文提出的状态检修方法是对电厂设备运行数据分类整理的基础上，充分挖掘数据信息，运用模糊数学的理论对所有参数进行加权综合评判，得出设备的运行状态；依据设备的运行状态信息，运用模糊识别的方法进行故障诊断，从而得出设备运行的风险评判；运行人员参照设备的风险评判，结合人工现场经验判断，给出最优的检修策略。系统沿用基于Web服务器的网络化信息系统实现方式——B/S模式。它通过Web服务器，实现分布式数据库的数据资源共享；通过客户端配置的浏览器，实现通过局域网或远程Internet网的多用户应用服务。最后，本文对以上的研究工作作了总结，并提出了进一步的研究方向。关键词：状态检修(CBM)模糊数学故障模式分析AbstractWiththereformofelectricityindustryinChina,itisnecessarytoenhancecompetitiveabilityofpower-generationcorporation,toimproveeconomicoperationofpowerequipments,andtoreducethecostincludingenormousmaintenancecostwithsafeandreliabilityproduction.Infoundationofunderstandingthedomesticandforeignresearchandthedevelopmentdirection,thispaperanalyzesmanykindsofmaintenanceinpowerplantsandproposesmoreadvancedmaintenanceway—condition-basedmaintenance.Byintroducingandanalyzingthetheoryoffuzzymathematicsincludingthebasicconcepts,thefuzzycomprehensiveevaluationandthefuzzydiscriminating,thethesisdiscussesthecommonprocessandmethodoftheCBMsupportingsystembasedonsequenceddetection.TheFEMAmethodalsoisdiscussedinthethesis.Theoptimummaintenancestrategyisgivenbythewayofconditionassessmentandriskevaluation.ThesystemusescurrentlymostpopularrealizationwaywhichisbasedontheWebservernetworkinformationsystemnamedB/Smode.ThismoderealizessharingofdistributionaldatabaseresourcesthroughtheWebserverandrealizesmulti-userapplicationserviceonlocalareanetworkorthelong-distanceInternetnetthroughthebrowserinclientside.Finally,thethesissummarizesthestudiesandputsforwardproblemsforfurtherstudies.Keywords:Condition-basedmaintenance;;Fuzzymathematics;FEMA摘要ABSTRACT1绪论................................................................................................................................11.1研究背景...................................................................................................................11.2国内外研究状况.......................................................................................................21.2.1国外火力发电设备状态检修的基本情况...........................................................21.2.2国内火力发电设备开展状态检修试点情况...................................................31.3课题的研究目标及内容...........................................................................................52状态检修的理论与方法分析........................................................................................62．1状态检修基本概念及内容......................................................................................62．2状态检修的支持系统..............................................................................................62.2.1状态监测与故障诊断系统.................................................................................72.2.2运行检修决策系统.............................................................................................72.2.3检修管理系统.....................................................................................................72.3状态检修的实施步骤[15]...........................................................................................82.4状态检修的实施策略[16~18].......................................................................................92.5状态检修系统基本设计思想.................................................................................102.5.1RCM分析方法[19，20，21]...................................................................................102.5.2故障模式及后果分析（FEMA）....................................................................112.5.3模糊综合评判诊断法.......................................................................................122.6点检制.....................................................................................................................142.7模糊数学应用方法.................................................................................................152.7.1单因素模糊评判[29].............................................................................................152.7.2模糊综合评判[29,30]..............................................................................................162.7.3模糊聚类分析[31]..................................................................................................182.8本章小结.................................................................................................................203状态检修系统的总体设计..............................................................................................213.1状态检修工作流程....................................................................................................213.2状态检修系