摘要
提出了三端差动保护中三端的同步方法,重点阐述了光纤通道双向延时差的计算方法。在计算了延时差之后,详细分析了单条通道延时不一致和两条通道不一致对差动保护的具体影响,得出结论:三端差动保护中由于存在冗余通道,可以检测部分光纤双向延时不一致的情况,提高保护的可靠性。
The paper discusses synchronization methods in T-line differential protection,and focuses on how to calculate the delay difference of optical fibre channel.After the delay difference is calculated,i t analyzes the influence of single-channel different delay and two-channel different delay.The conclusion is that T-line differential protection can detect the differnet delay and improve the reliability of protection because of redundant channels.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2010年第14期156-159,164,共5页
Power System Protection and Control
关键词
三端差动保护
通道延时不一致
同步
T-line differential protection
different delay
synchronization
