面向配电自动化的中压电力线高速数据通信终端设计  

Design of Medium Voltage Power-Line High Rate Data Communication Terminal for Power Distribution Automation

作　　者：韩谷静[1] 殷小贡[1] 林涛[1] 

机构地区：[1]武汉大学电气工程学院,武汉430072

出　　处：《电工技术学报》2007年第3期128-132,158,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(50007004)

摘　　要：论述了以中压(10kV)配电网为信道、面向配电自动化应用的高速数据通信系统的整体解决方案,详细介绍了该系统的终端设计。提出将低压电力线通信中成熟运用的数据调制/解调及组帧技术移植到中压环境的思想,并针对中压电力线因过长链路易造成信号严重衰减的问题,在终端设计中采用基于Weinberg滤波电路和传输线变压器耦合的匹配策略解决高频宽带(4～22MHz)信号的功率放大。实现了信号安全、可靠地向中压电力线的注入,可满足10km左右的传输要求。A total scheme of high rate data communication system based on medium voltage （10kV） power-line for power distribution automation is presented in the paper. The communication terminal design is introduced, in which technique of data modulation/demodulation and frame-forming used in lower-voltage power-line communication is upgraded to medium voltage environment. Aiming at large attenuation because of over-long transmission distance, Weinberg filter and transmission line transformer coupling is adopted to solve power amplifying of 4- 22MHz signals. The safe and credible injection of signal into medium voltage power-line is realized which can satisfy about 10km transmission requirement.

关 键 词：配电自动化 中压电力线通信 正交频分复用 高频宽带功率放大 传输线变压器 

分 类 号：TP913[自动化与计算机技术]