It compares the pilot distance protection with power line carrier (PLC) in the single or double frequency and the differential protection with optical fiber in the loop or chain connection.
比较单频率与双频率载波通道的纵联距离保护和环状与链状连接光纤通道的差动保护方案。
Carrier protection has been playing a very important role in normal operation of HV transmission line. It can cut-off the fault quickly to ensure the system operating stably.
高频保护对于高压线路的正常运行起着极其重要的作用，它可以快速切除故障，保障系统的稳定。
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