摘要
传统方法存在通信时延较长,抗干扰能力较差等问题,为此设计基于中压宽带载波技术的配电自动化通信系统。利用配电网骨干层和接入层构建配电通信平台与主站系统对接,通过均匀双导体线构建中压电力线模型,利用中压宽带载波技术对被传符号周期进行调制解调。通过子载波正交将部分末端信号转移到前端,形成循环CP控制平均时延。通过频带较窄子载波切割有效频谱,并行传输调制正交子载频,获得调制子信号。实验结果表明,所设计系统有效解决了通信时通信距离受限、通信时延较长以及抗干扰能力差等问题,说明该系统的应用性能较强。
Traditional methods have problems such as long communication delay and poor anti-interference ability. Therefore, a distribution automation communication system based on medium-voltage broadband carrier technology is designed. The backbone layer and access layer of the distribution network are used to build the power distribution communication platform to connect with the main station system, the medium voltage power line model is constructed through uniform double conductor lines, and the medium voltage broadband carrier technology is used to modulate and demodulate the transmitted symbol period. Part of the end signal is transferred to the front end through orthogonal sub-carriers, forming a cyclic CP to control the average delay. The effective frequency spectrum is cut by sub-carriers with a narrow frequency band, and the modulated orthogonal sub-carrier frequencies are transmitted in parallel to obtain modulated sub-signals. The experimental results show that the designed system effectively solves the problems of limited communication distance, long communication delay, and poor anti-interference ability during communication, indicating that the system has strong application performance.
作者
王伟亮
蒙锋
彭勃
卢权
何弦
WANG Wei-liang;MENG Feng;PENG Bo;LU Quan;HE Xian(Liuzhou Power Supply Bureau of Guangxi Power Grid Corporation,Liuzhou 545000 China)
出处
《自动化技术与应用》
2023年第1期113-116,120,共5页
Techniques of Automation and Applications
关键词
中压宽带载波技术
配电通信系统
均匀双导线
子载波正交
medium voltage broadband carrier technology
distribution communication system
uniform double wire
sub-carrier orthogonal
