简介:摘要:针对某电厂一起220kV操作箱无故障跳闸事故的排查过程,介绍了事故概况,经事故分析与现场检查,发现该跳闸事故的原因为跳闸中间继电器动作电压门槛过低导致跳闸。最后,提出提高电压门槛减少直流屏接地电容影响的措施。
简介:Anovelnon-communicationprotectionbasedonadaptivetrippingandreclosuretechniquefortransmissionlines,Astudyoneffectonsimulationbyusingreducedmodeloftransmissionnetworkforreal-timepowersystemsimulator,AdvanceoftheGroundRelayoftheLineProtection,AnapplicationofanANN-basedprotectiverelayforfaultdetectionusingwavelettransform,AnIntegratedSupportSystemforProtectiveRelaySettingDesignedtoEnhanceFunctionLinkageandImproveDataReusability。
简介:Agraphicalblockplatformforreal-timeDSP-baseddigitalrelaydevelopment,AnAdaptiveSchemetoPreventUndesirableDistanceProtectionOperationDuringVoltageInstability,ArtificialNeuralNetworkbasedComparatorsforGeneratingDistanceRelayCharacteristics,Discrete-Fourier-transform-basedtechniqueforremovalofdecayingDCoffsetfromphasorestimates.
简介:摘要某±500kV换流站极Ⅱ换流变Y/YC相分接头压力继电器动作,导致极Ⅱ直流系统故障停运。本文对此次事故的过程、原因分析及处理过程进行了分析介绍。