SDH光纤自愈环网传输延时的计算与分析

SDH自愈技术在电力通信网上的应用具有重要的意义，一方面，极大地提高了传输网络的生存性和可靠性；另一方面，自愈环网技术可以从技术的角度，解决电力生产信息必须具备2种不同传输手段的要求，大大降低了对电力通信网传输系统的投资。SDH自愈环传输延时的变化是制约自愈技术在电力系统应用的一个主要因素。文章结合中国南方电网SDH主干环网的情况，对SDH传输延时进行了计算、测试和分析，并对中国南方电网SDH主干环网的结构提出了相应的优化方案。

Calculation and analysis about transmission time delay of SDH self-healing loop network

SDH self-healing loop technique has important meaning in the electric power communication network. One hand it improves the subsistence and the reliability of the network greatly, the other hand, from the technical point of view, the self-healing loop technique will satisfy the requirement of electric power production information which have to possess two different kinds of transmission means, then it can decrease the investment of the electric power communication transmission network. But the variety of SDH transmission time delay is a dominating factor that restricts the application of self-healing loop technique in electric power. Based on the test of China Southern Grid SDH network this paper outlines the calculation and analysis of SDH transmission time delay of self-healing loop network, and introduce the scheme of network maiorization of China Southern Grid SDH network.