零序电流互感器接线对接地故障保护动作的影响

Influence of Zero Sequence Current Transformer Wiring on Ground Fault Protection Action

接地故障是新能源电厂常见故障,零序电流保护能有效切除故障,零序电流通过零序电流互感器采集。若因零序电流互感器接线错误,则会导致零序电流采集偏差,影响保护动作。通过接地保护跳闸切入,分析零序电流互感器接线对保护动作的影响,为新能源电厂零序电流互感器安装调试、保护故障分析提供经验。

Grounding fault is a common fault in new energy power plants.Zero sequence current protection can effectively cut off faults,and zero sequence current is collected through a zero sequence current transformer.If the wiring of the zero sequence current transformer is incorrect,it will cause a deviation in the collection of zero sequence current and affect the protection action.Through grounding protection tripping,this article analyzes the impact of zero sequence current transformer wiring on protection action,providing experience for the installation,commissioning,and protection fault analysis of zero sequence current transformers in new energy power plants.