電力系統(tǒng)的守護神微課WKE知識點：縱聯(lián)差動保護的基本原理專業(yè)：電氣自動化技術(shù)適用對象：高等職業(yè)院校學(xué)生單元：輸電線路縱聯(lián)差動保護ThepatronsaintofpowersystemsKnowledgepoint:BasicprinciplesoflongitudinaldifferentialprotectionMajor:ElectricalAutomationTechnologyApplicableobjects:studentsfromhighervocationalcollegesUnit:Transmissionlinelongitudinaldifferentialprotection電力系統(tǒng)的故障及不正常工作狀態(tài)電弧燒壞電氣設(shè)備絕緣老化、設(shè)備變形電壓降低，影響用戶的正常工作破壞系統(tǒng)運行的穩(wěn)定性電力系統(tǒng)故障可能引起的后果▼

PossibleconsequencesofpowersystemfailureArcburnselectricalequipmentInsulationagingandequipmentdeformationThevoltagedrops,affectingthenormalworkofusersDestroythestabilityofsystemoperationFaultsandabnormalworkingconditionsofpowersystems電力系統(tǒng)的故障及不正常工作狀態(tài)電力系統(tǒng)的異常運行狀態(tài)指系統(tǒng)的正常工作受到干擾，設(shè)備的運行參數(shù)偏離正常值。例如：AbnormaloperatingstatusofpowersystemItmeansthatthenormaloperationofthesystemisdisturbedandtheoperatingparametersoftheequipmentdeviatefromthenormalvalues.Forexample:Overload過負荷過電流Overcurrent頻率降低FrequencyreductionVoltagedecreaseorincrease,etc電壓降低或升高等Faultsandabnormalworkingconditionsofpowersystems當(dāng)電力系統(tǒng)出現(xiàn)故障或異常時怎么辦呢？？出馬“守護神”Whatshouldwedowhenthereisafaultorabnormalityinthepowersystem?"GuardianSaint"takesaction電力系統(tǒng)繼電保護的任務(wù)電力系統(tǒng)發(fā)生故障時自動、快速、有選擇地將故障設(shè)備從電力系統(tǒng)中切除，保證非故障設(shè)備繼續(xù)運行，盡量縮小停電范圍。電力系統(tǒng)出現(xiàn)異常運行狀態(tài)時自動、及時、有選擇地發(fā)出告警信號或減負荷、跳閘。ThetasksofpowersystemrelayprotectionAutomatically,quicklyandselectivelyremovefaultyequipmentfromthepowersystemtoensurethatnon-faultyequipmentcontinuestooperateandminimizethescopeofpoweroutages.Automatically,timelyandselectivelysendoutalarmsignalsorloadreductionandtripping.WhenapowersystemfailureoccursWhenthepowersystemencountersabnormaloperatingconditions著火的原因就是負荷過大溫度過高，現(xiàn)在換新的。電力系統(tǒng)繼電保護維修人員：PowerSystemProtectionMaintenancestaff:Thecauseofthefirewasexcessiveloadandhightemperature.Nowweshouldreplaceitwithanewone.電力系統(tǒng)繼電保護——電力系統(tǒng)的“守護神”用什么來實現(xiàn)繼電保護呢？總結(jié)/Summary1故障時跳閘2異常時告警Powersystemrelayprotection-whatdoesthe"patronsaint"ofthepowersystemusetoachieverelayprotection?TriponfaultAlarmwhenabnormalityoccurs感謝您的觀看與聆聽Thanksforwatchingandlistening微課WKE知識點：高頻保護專業(yè)：電氣自動化技術(shù)適用對象：高等職業(yè)院校學(xué)生單元：輸電線路縱聯(lián)差動保護Knowledgepoint:BasicprinciplesoflongitudinaldifferentialprotectionMajor:ElectricalAutomationTechnol