Line Selection Method for Distributed Small Current Grounding Based on Transformer Fault Components
A distributed line selection method based on transformer power frequency fault component and a distributed line selection method based on transformer transient fault component are proposed and analyzed.The analysis shows that pow-er frequency fault component-based method can be used in some scenarios of insufficient compensation state of the arc sup-pression coil grounding system.The proposed transient fault component-based method compares transient fault reference component of transformer's load side with transient fault component of the protected line.The two transient fault compo-nents have a close serial current relationship,and their amplitudes and waveform variations are small.Therefore,the pro-posed method has the advantages of low interference and high reliability.
grounding line selectiondistributedtransformer fault componentfault transient component
万方数据
维普
