摘要
随着智能电网概念的兴起,电力系统对通信线路的需要与日俱增,而新建专用的通信线路不但需要投入大量的人力和物力,还需要投入大量的建设资金,所以利用现有配电网线路实现电力线数据通信传输成为技术人员关注的焦点。目前,电力线载波通信技术主要由G3-PLC技术实现。G3-PLC技术在规定范围内具有高可靠性、抗干扰能力强等优点,但面对复杂的电网环境、不同区域、不同线路时,无法满足通信可靠性的要求。以G3-PLC技术为基础,正交频分复用技术(OFDM)为核心,自主研发出多频带、自适应为特征的新一代电力载波装置,可以在7.8 kHz^10 MHz跨频带范围内自适应选择合适的工作频率和信道带宽,实现了信息的有效传输。
With the concept of smart grid arising,communication lines in power system becomes increasingly needy.Large amount of manpower,material resources and construction funds are all essentials for the setting-up of new dedicated communication lines,thus highlighting the importance as to how to use existing distribution network lines to achieve power line data communication transmission.At present,power line carrier communication technology is mainly realized by G3-PLC technology.G3-PLC technology’s advantages lie in high reliability and strong anti-interference ability in the specified range.However,in the plight of complex power grid environment,the requirements of communication reliability is extremely demanding to meet in varied regions and lines.Adopting G3-PLC technology and orthogonal frequency division multiplexing(OFDM)as the core,this paper independently develops a new generation of power carrier device with multi-band and self-adapting characteristics.The device can self-adaptively select the appropriate operating frequency and channel bandwidth within the 7.8kHz^10MHz cross-band range,thus realizing the effective transmission of information.
作者
宋士龙
王承民
彭石
SONG Shilong;WANG Chengmin;PENG Shi(School of Electronic Information and Electrical Engineering,Shanghai Jiaotong University,Shanghai 200240,China;Shanghai Puhai Qiushi Electric Power High Technology Co.,Ltd.,Shanghai 200290,China)
出处
《电器与能效管理技术》
2019年第14期8-13,共6页
Electrical & Energy Management Technology
关键词
配电网
正交频分复用技术
G3-PLC
电力线载波技术
自适应
distribution network
orthogonal frequency division multiplexing(OFDM)
G3-PLC
power line carrier technology
adaptive
