Reason Analysis for Fusing of Multiphase Fuse of 10-35 kV TV at Lightning Stroke
Geng Yuan · Electrical Equipment · 2004
This paper discusses the reasons and processing methods for fusing of fuse of 10-35 kV TV at lightning stroke in neutral unearthing system as an example of 110 kV Yuxi substation. The principles that the entrance capacity impulse current can not be limited by suppression resistance installed at neutral point of TV primary winding are expounded, which is used to explain the typical phenomenon of fusing of fuse of 10-35 kV TV occurred in substation along the river area in Jiangsu for hundreds phase - times on March 1998.