配电变压器励磁涌流引起的10 kV线路保护误动分析

Analysis on Misoperation of 10 kV Line Protection Caused by Inrush Current in Distribution Transformer

深入分析了配电变压器励磁涌流引起的两起10kV线路电流保护误动事故,并结合励磁涌流的产生原理和特点,提出了防止励磁涌流引起的10kV线路电流保护误动的措施。

Two misoperation accidents of current protection of 10 kV line caused by inrush current of distribution transformer are analyzed in depth. Combined with the producing principle and characteristics of inrush current,the measures to prevent the misoperation of 10 kV line protection caused by inrush current are put forward.