In this paper, the pickup units of transmission line relaying are analysed, the improving scheme of micro processor - based protection is put forward.
通过对线路保护中启动元件的分析，提出了对现有微机保护的改进意见。
Each 500 kV transmission line will be protected by two primary pilot relaying systems with a backup relaying to achieve primary and secondary protection.
由两个主控制继电保护系统对各条500千伏传输线进行保护，该控制继电保护系统上装有一只后备继电器，以实现初级保护与二次保护。
The dynamic power frequency impedance of TCSC is of great importance to the analysis of protective relaying characteristics on transmission line with TCSC.
TCSC的动态基频阻抗特性分析对研究含TCSC线路上的线路保护的特性具有重要意义。
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