电力系统及其自动化学报2023，Vol.35Issue(12)：142-150,9.DOI:10.19635/j.cnki.csu-epsa.001212
直流载波通讯系统线路特性研究与系统实现
Research on Line Characteristics and System Realization of DC Carrier Communication System
摘要
Abstract
Aimed at the situation that the existing DC carrier communication system cannot achieve a long-distance,high-power and high-speed transmission and the problem of error caused by sharp fluctuations of voltage waveform when sending logic"0"under high-power time-varying load,the data transmission characteristics of DC carrier communica-tion system are analyzed to realize the reuse of power supply line and data transmission line.On this basis,a dual-pow-er technology is proposed to improve the data transmission waveform of DC carrier communication system,and a set of DC carrier communication circuit in half duplex mode which is based on two instrument power supply lines is designed.Through experimental results,it is verified that compared with those of the RS485 system,the power supply and com-munication functions of the proposed system can be realized without adding wiring.In addition,the topology is of arbi-trary structure and with a low error rate,which is suitable for the use in a DC carrier communication circuit between in-struments and modules in a control room.关键词
主从站/直流载波/低压直流/通讯技术/传输特性Key words
master-slave/DC carrier/low-voltage DC/communication technology/transmission characteristic分类
信息技术与安全科学引用本文复制引用
周军,董承霖,乔建..直流载波通讯系统线路特性研究与系统实现[J].电力系统及其自动化学报,2023,35(12):142-150,9.基金项目
吉林省科技厅科技计划重点研发资助项目(20180201010GX) （20180201010GX）
