抗时延抖动的线路纵差保护分组传输通道配置参数影响分析

分组传送网承载电力通信时分复用业务存在随机时延抖动，严重的随机时延抖动会影响线路纵差保护数据的实时性，进而威胁电网安全。在全面分析分组传送网调度机制和时延抖动原理的基础上，建立了分组传送端到端随机时延抖动的数学模型。数值仿真研究了分组封装尺寸、背景流量、网络节点数和节点吞吐量对随机时延抖动的影响。结果表明，合理设置这几个参数可以有效降低随机时延抖动，提升网络性能。研究成果对线路纵差保护数据分组传输通道的配置具有工程参考价值。

An impact analysis of the configuration parameters against delay jitter of line comparison pilot protection in packet transport channel

The random delay jitter of the time division multiplexing has an influence on the real-time of line comparison pilot protection data in packet transport network, such jitter even makes a threat to the security of power grid. By analyzing the scheduling mechanism and the jitter principle, a random delay jitter mathematical model for end to end service is established. The influence of network parameters, such as package size, background traffic, service path node number and the node throughput are researched by numerical simulation. Simulative results show that, the random delay jitter can be reduced and the network performance can be improved effectively by setting these parameters reasonably. The research results have value for the configuration of the line comparison pilot protection data in packet transport channel.