南方电网技术2011，Vol.5Issue(z1)：120-122,3.
一起110kV双回线路相继速动的保护动作分析
Analysis on the Protection Actions Quick in Succession in a Double-Circuit Transmission Line
龙雪涛1
作者信息
- 1. 广东电网公司佛山供电局调通中心,广东佛山528000
- 折叠
摘要
Abstract
A mutual speed-up protection is used in relay protection devices in order to implement instant protection for an 110 kV Double-Circuit line with parallel-operation. With the analysis of an actual fault, protection misoperations caused by unsuitable sitting-value of Zone 3 impedance relay of an 110 kV double-circuit line with power source at each end . It is suggested that Zone 3 impedance relay's protection area do not include LV Side of tail-end Transformer to avoid mal-trip when mutual speed-up protection used in double-circuit transmission lines on the same pole with two side power.关键词
双回线路/相继速动保护/继电保护Key words
Double-Circuit line/ Mutual speed-up protection/ relay protection分类
信息技术与安全科学引用本文复制引用
龙雪涛..一起110kV双回线路相继速动的保护动作分析[J].南方电网技术,2011,5(z1):120-122,3.
