PTN网络保护技术在电力系统中的应用研究

Design and Application of Measurement System with Failure Analysis

摘要: PTN网络结合了SDH和传统以太网的优点，可以满足智能电网对时间同步、组播、QOS等通信需求。分析了广域继电保护新业务的时延需求、通道恢复时延同路径需求和PTN常用的保护技术，研究了适用于满足广域继电保护业务的网络保护技术．最后通过搭建的仿真测试环境检验了Wrapping保护和1∶1 LSP保护对PTN网络时延的影响。仿真结果表明Wrapping保护和1∶1 LSP保护可以满足广域继电保护业务对网络时延的要求。

Abstract: PTN network combines the advantages of SDH and traditional Ethernet. It can satisfy the smart grid for time synchronization, multicast, QOS and so on. This paper analyzes the time delay requirements of wide-area protection, the requirements of communication channel reconvery time delay with the same path and PTN protection technology. And we study the network protection technologies suit to the PTN networks carrying the wide-area protection. Finally, the time delay of Wrapping protection and 1∶1 LSP protection are verified by simulation testing. The simulation results are shown that Wrapping protection and 1∶1 LSP protection can meet the requirements of the wide-area relay protection in the PTN network.