云南电网应急通信车卫星数据通信解决方案研究  

Research of Satellite Data Communication Solutions for Emergency Communication Vehicle in Yunnan Power Grid

作　　者：孙严智[1] 胡劲松[2] 刘宇明[2] 田之俊[2] 陈先富[3] 

机构地区：[1]北京邮电大学信息与通信工程学院,北京市海淀区100876 [2]云南电力调度控制中心,云南省昆明市650011 [3]云南电网有限责任公司电力科学研究院博士后科研工作站,云南省昆明市650217

出　　处：《智能电网》2016年第7期703-708,共6页Smart Grid

摘　　要：云南是自然灾害多发省份,近年来,地震、冰灾等灾害频发,电网的应急指挥和抢修复电工作面临重大考验。为此,云南电网通过引入应急通信车系统实现双向语音通信、双向数据通信、现场视频图像实时采集及传输、视频会议功能,其现场应急语音、图像、视频通信主要依靠卫星通信开展。但卫星链路存在长时延、高误码等特性,导致传输控制协议(transmission control protocol,TCP)的传输性能明显下降,以至于数据传输的实时性较差。为解决这一问题,通过分析现有卫星链路TCP性能增强方案,提出一种符合云南电网应急通信系统网络架构的解决方案,通过测试,进一步验证该方案的可行性。Yunnan is a province where natural disasters occur frequently, and disasters like earthquake and ice disaster take place frequently in recent years, so the emergency command and repair work of power grid face major challenges. To this end, the Yunnan power grid achieves two-way voice communications, two-way data communications, real-time video image acquisition and transmission and video conferencing through the introduction of emergency communication vehicle system. Among them, the voice, image and video communication mainly rely on satellite communications. However, the satellite link has the characteristics of long delay and high error rate, which leads to the decrease of TCP transmission performance, so that the data transmission is poor in real time. To solve this problem, this paper analyzes the existing satellite link TCP performance enhancement scheme. A solution which is suitable for the network architecture of emergency communication system in Yunnan power grid is proposed and the feasibility of the scheme is verified by testing.

关 键 词：卫星通信 数据通信 传输控制协议(transmission control protocol TCP) 分段加速 

分 类 号：TM73[电气工程—电力系统及自动化]