用电信息采集系统远程应急通道平台设计

摘要

目前除有线方式(光纤、PLC)外,多种新型无线通信技术(LTE、WiMax等)也在用电信息采集系统中大量应用.这类通信系统采用基站对区域内大量采集终端进行信息采集和管理,一旦出现故障,会引起大范围电力用户信息无法获取,影响整个电力输配系统的正常运行.设计了一种利用无人机搭建低空无线通信平台的应急方案,并对该场景下的空中无线信道进行了分析和建模,以此为根据,设计了基于宽带正交频分复用技术(OFDM)的远距离上行信道传输方案,并分析了该方案的通信性能和系统容量.仿真结果表明该方案可以满足10 km范围内的远程应急补站.%At present, in addition to the wired mode (optical fiber, PLC), a variety of new wireless communication technologies (LTE, WiMax, etc.) are also widely applied to the power user electric energy data acquire system. These kinds of wireless communication system use base stations to gather and manage large terminal information within the region. However, when failures of the base stations happen, it couldn't be obtained wide range of power users information which affects the normal operation of the whole power transmission and distribution system. In this paper, an emergency plan by building a low altitude wireless communication platform using unmanned aerial vehicles is designed, and then analyzed and modeled the wireless channel in this scenario. On the basis of this, a long distance uplink channel transmission scheme based on broadband OFDM is designed, and then the communication performance and system capacity of the scheme is analyzed. Simulation results show that the proposed scheme can meet the emergency repair stations within 10 km.