广东电力Issue(7)：84-87,4.DOI:10.3969/j.issn.1007-290X.2015.07.017
基于故障分量的采样值相关差动母线保护
Correlated Differential Busbar Protection of Sampling Value Based on Fault Componet
李肖博 1谭凌 1江卫良 1郝后堂1
作者信息
- 1. 国电南瑞科技股份有限公司，江苏 南京 211106
- 折叠
摘要
Abstract
Aiming at the problem of difficulty in determining action boundary of differential protection of sampling value and affection by interference,a kind of new method for correlated differential busbar protection of sampling value based on fault component was proposed which used fault component differential current at the time of internal and external faults in busbar area,correlation size and distribution law of braking current to identify the fault. This method uses short data window to calculate correlation in succession,the calculated result is normalized value of integral of sampling value which has stronger resistance ability against bad data and saturation of current transfer. In addition,action boundary is certain and constant val-ue setting is simple. Dynamic model testing result indicates that this method could rapidly and reliably cut off busbar fault and is provided with better protection performance and practical value.关键词
母线保护/采样值差动保护/相关度/电流互感器饱和/分布特性/故障分量Key words
busbar protection/differential protection of sampling value/correlation/saturation of current transformer/dis-tribution characteristic/fault component分类
信息技术与安全科学引用本文复制引用
李肖博,谭凌,江卫良,郝后堂..基于故障分量的采样值相关差动母线保护[J].广东电力,2015,(7):84-87,4.
