中国电机工程学报2015，Vol.35Issue(24)：6398-6404,后插15,8.DOI:10.13334/j.0258-8013.pcsee.2015.24.015
PT断线后电抗器匝间保护新判据
New Criterion on Shunt Reactor Inter-turn Protection When PT Secondary Circuit Open
陈争光 1李岩军 1詹荣荣 1周春霞 1周泽昕 1詹智华 1余越 1李泽1
作者信息
- 1. 中国电力科学研究院,北京市海淀区 100192
- 折叠
摘要
Abstract
The strategy of blocking inter-turn protection is adopted when potential transformer (PT) secondary circuit is open, but it can expand the failure range easily. This paper analyzed the calculation method of zero sequence impedance when reactor PT secondary circuit open, characteristics of initial and terminal current was studied after inter-turn fault and external fault at the reactor, new criterion about shunt reactor inter-turn protection when PT secondary circuit open was proposed on the basis of zero sequence impedance and fault current characteristic, the correctness of the theoretical analysis was verified in PSCAD/EMTDC electromagnetic transient simulation platform, this criterion improves the existing reactor protection methods. Reactor and line system model was established in the dynamic simulation lab, dynamic simulations results verified the validity of the theoretical analysis and calculation.关键词
电压互感器断线/零序阻抗/继电保护/新判据Key words
potential transformer (PT) secondary circuit open/zero sequence impedance/relay protection/new criterion分类
信息技术与安全科学引用本文复制引用
陈争光,李岩军,詹荣荣,周春霞,周泽昕,詹智华,余越,李泽..PT断线后电抗器匝间保护新判据[J].中国电机工程学报,2015,35(24):6398-6404,后插15,8.
