电力系统保护与控制2016，Vol.44Issue(5)：36-41,6.DOI:10.7667/PSPC150874
变压器多侧励磁涌流产生机理及对差动快速动作区影响研究
Transformer's multi-side inrush current generation mechanism and its influence on the differential protection's fast action zone
姚东晓 1邓茂军 1倪传坤 1王立德 2马和科 1吕利娟 1黄继东1
作者信息
- 1. 许继电气股份有限公司，河南 许昌 461000
- 2. 国网湖南省电力公司检修公司，湖南 长沙 410000
- 折叠
摘要
Abstract
Multiple sides' inrush currents of transformer are similar to inside fault currents, which is likely to cause the differential protection's fast action zone malfunction. This paper studies two multi-side inrush current's mechanism and analyzes the effects on two different types of differential protection fast action zones. First, the inrush current's mechanism generated from high-side and low-side windings when closing the high-side breaker without load led to core saturation and its effect on phase differential protection fast action zone; second, the inrush current's mechanism generated from high-side, mid-side and low-side windings when cutting off the outside region fault led to core saturation and its effect on longitudinal differential protection fast action zone. Based on the analysis of two inrush current generation mechanism and characteristics, it puts out that the winding differential protection should not deploy fast action zone, and the longitudinal differential protection's fast action zone should add error prevention measures. And it puts forward specific improvement program which has been proven to prevent malfunction in many experiments.关键词
变压器/多侧励磁涌流/差动保护/快速动作区/恢复性涌流/区内故障Key words
transformer/multi-side inrush current/differential protection/fast action zone/restorative surge/fault zone引用本文复制引用
姚东晓,邓茂军,倪传坤,王立德,马和科,吕利娟,黄继东..变压器多侧励磁涌流产生机理及对差动快速动作区影响研究[J].电力系统保护与控制,2016,44(5):36-41,6.
