特高压输电塔实时监测系统的数据传输方法研究

对特高压输电塔安全状态进行实时在线监测是保障国家电网安全的一个重要手段,而特高压输电塔处于的复杂强干扰、弱无线信号的环境对数据可靠传输提出了较高要求。以基于无线传输信道建立的远程数据传输系统为基础,在分析了特高压输电塔环境特性对无线信道的影响基础上,提出建立一种基于应答确认与自适应数据动态重传机制的数据传输方法,该方法能自动根据无线信道情况,采用"快速启动"、"线性增长"、"回归发送"的动态机制来实时调整数据包大小,从而在保证数据传输可靠性基础上实现数据的最大效率传输。该数据传输方法经过实验验证,相比传统直接发送数据方法具有很高的可靠性和抗干扰性。

Research on data transmission method of the UHV transmission tower realtime monitoring system

The ultra-high voltage(UHV) transmission tower real-time monitoring system is an important means to safeguard the security of the national grid,and it already become a critical problem in engineering applications to guarantee the data transmission reliability of the UHV transmission tower real-time monitoring system in the complex strong interference and weak wireless signal environment.On the basis of a remote data transmission system of wireless transmission channel,effect of environmental characteristics of UHV transmission tower on the wireless channel is analyed,a method based on the response confirm and adaptive dynamic retransmission mechanism is put forward.The method can adjust the packet size real-time automatically according to the status of wireless channel,utilize"quick-start","linear-growth",and"regress-send"dynamic mechanism,and ensure the reliability and maximum efficiency of data transmission.Experimental results verify the high reliability and anti-interference compared with traditional method.