Page 121 - 2024年第55卷第7期
P. 121

TSMSEcombinedwithIOOA - BILSTM forthefault
                                       diagnosismethodofhydropowerunitshafting

                                                                                     1
                                                                       1,2
                                                          1
                                                1
                                   ZHANGJianbo,LIXiang,ZENGYun ,TANGKuaji
                        (1.SchoolofMetallurgyandEnergy,KunmingUniversityofScienceandTechnology,Kunming 650093,China;
                        2.YunnanUniversityhydraulicMachineryIntelligentTestEngineeringResearchCenter,Kunming 650093,China)
                  Abstract:Inordertoimprovetheaccuracyofshaftingvibrationfaultdiagnosisofhydropowerunits,anewdiag
                  nosticmethodisproposed.Firstly,thevibrationsignaldecompositionwascarriedoutbasedontheCEEMDAN.
                  Secondly ,basedontheideaoftime - shiftedandmulti - scale,aTSMSEmodelisproposedtoovercomethepoorro
                  bustnessandlackofcoarsegranulationoftraditionalMSE.Finally,thefaultfeaturesetextractedbyTSMSEwas
                  inputintotheBiLSTMoptimizedbyIOOAforfaultfeatureclassification.WithaddingSNR = 5dBnoisetotheorigi
                  nalsignalandintroducingtwomultiscaleentropiestocomparewithTSMSE ,theanti - noiseperformanceandrobust
                  nessofTSMSEareanalyzed.Theresultsshowthatthestabilityandanti - noiseperformanceofTSMSEfeatureex
                  tractionareobviouslybetterthantheothertwoinagivendataset.Atthesametime ,theaccuracyoftheproposed
                  faultdiagnosismodelis100% and97.22% respectivelyinthecaseoforiginalsignalandnoisysignal ,whichveri
                  fiesthegoodperformanceoftheproposedmodelandprovidesanewscientificmethodforfaultdiagnosisofhydro
                  powerunits.
                  Keywords:hydroelectricgeneratingset;featureextraction;TSMSE;IOOA - BILSTM;faultdiagnosis


                                                                                    (责任编辑:王 婧)




              (上接第 861页)
                            Researchonsafetymonitoringdesignsystem forspecialstructuresof
                                 highconcretefacerockfilldamsundercomplexconditions

                                                                       3
                                           3
                                  1,2
                                                         1,2
                                                                                                1,2
                                                                                     3
                       MAChunhui ,LUXi,JIADongyan ,ZHOUHeng,ZHANGQun,YANGJie
                   (1.StateKeyLaboratoryofEco - hydraulicsinNorthwestAridRegion,Xi’anUniversityofTechnology,Xi’an 710048,China;
                      2.InstituteofWaterResourcesandHydro - electricEngineering,Xi’anUniversityofTechnology,Xi’an 710048,China;
                                     3.NorthwestEngineeringCorporationLimited,Xi’an 710065,China)
                  Abstract:Inordertoenhancethesafetymonitoringofspecialstructuressuchasextrudedsidewalls,hightoe
                  piers ,andhightoewallsinahighpanelrockfilldamproject,theshortcomingsanddeficienciesinthesafetymo
                  nitoringdesignofthesespecialstructuresaresummarizedbasedonthesafetymonitoringdesigndataofpanelrock
                  filldams.Bygatheringandorganizingnumericalanalysisresultsofhighconcretefacerockfilldamswithspecial
                  izedstructuresofhightoepiers ,hightoewalls,andextrudedsidewallsinChina,weunearthedthedeformation
                  andstress - strainlawsofspecializedstructures.Furthermore ,weidentifieddeformation,stress - strain,tempera
                  ture,joints,andseepageofspecializedstructuresasthekeypointsofsafetymonitoringdesign.Basedonthe
                  safetymonitoringdesigndataofexistingpanelrockfilldamprojects ,weformulatedasafetymonitoringdesignsys
                  temforthespecializedstructuresofhighpanelrockfilldams.Thissystemcanprovidescientificguidanceforthe
                  safetymonitoringdesignofspecializedstructuresofunder - constructionandplannedpanelrockfilldams ,thereby
                  significantlyenhancingthesafetymonitoringlevelofpanelrockfilldams.
                  Keywords:hightoepier;hightoewall;extrudingthesidewall;monitoringdesignsystem


                                                                                    (责任编辑:韩 昆)







                                                                                                —  8 7 3 —
   116   117   118   119   120   121   122   123   124   125   126