A Case Analysis of Abnormal Operation of Distribution Automation Switch Caused by the Magnetizing Inrush Current Lockout
Based on the practical background of distribution automation in Yunnan power grid currently,the incorrect triggering of the excitation surge current lockout function of the distribution automation switch is analyzed by combining with a case of abnormal reaction,and the optimization suggestions is elaborate accordingly.Firstly,the parameter and protection configuration of distribution line are introduced,laying the foundation for subsequent analysis.Then,to clarify the abnormal reaction of target switch,the reaction process is reproduced based on the SOE information.Finally,the reasons for the abnormal reaction of the distribution automation switch are explained by employing the fault recording information,and optimization suggestions are provided simultaneously.
Distribution Automation SwitchAbnormal ReactionMagnetizing Inrush Current LockoutMis TriggeringFault Recording Information
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