采样值差动在线路差动保护中的应用

Sampled Values Based Differential Protection for Line Differential Protection

在简要介绍基于采样值的线路差动保护的基础上,结合具体案例重点分析了采样值差动在线路保护中的2个重要作用:一是解决传统变电站中的电流互感器饱和问题;二是提高数字化变电站中抗异常数据的能力。采样值差动保护的引入可以同时解决这2个问题,从而使传统变电站和数字化变电站的线路差动保护得到有机统一。

After a brief introduction about the sampled values based line differential protection,two important effects of the sample values based differential protection（SVBDP） on the line differential protection are analyzed with practical example,i.e.solving the problem of current transformer saturation in the traditional substations and improving the capability of resisting abnormal data in the digital substations.The application of SVBDP can solve both above mentioned problems simultaneously,thus the line differential protection for traditional substations as for digital substations can achieve organic unification.