| 基于差分技术的双向工频通信信号提取 |
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| 引用本文： | 王静,刘涤尘,彭希. 基于差分技术的双向工频通信信号提取[J]. 电力系统及其自动化学报, 2006, 18(6): 18-21,37 |
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| 作者姓名： | 王静 刘涤尘 彭希 |
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| 作者单位： | 武汉大学电气工程学院,武汉,430072;武汉大学电气工程学院,武汉,430072;武汉大学电气工程学院,武汉,430072 |
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| 摘 要： | 双向工频电力通信的基本原理是利用工频电压基波波形过零信息实现信号的调制和解调。针对双向工频电力通信信号的特点,分析了其独特的信号编码方式,利用信号编码的正交特性,实现了输入信号的多路传输,提高了通信效率;提出了基于差分技术的工频通信信号的提取,该方法可有效消除谐波对TW ACS信号的影响,并增加信号强度。理论分析和仿真结果证明了该方法的可行性。
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| 关 键 词： | 双向工频自动通信系统 差分技术 多路正交传输 信号检测 |
| 文章编号： | 1003-8930（2006）06-0018-04 |
| 收稿时间： | 2005-10-24 |
| 修稿时间： | 2005-10-242005-12-23 |
Signal Extraction of Two Way Automatic Communication System Based on Differential Technique |
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| WANG Jing,LIU Di-chen,PENG Xi. Signal Extraction of Two Way Automatic Communication System Based on Differential Technique[J]. Proceedings of the CSU-EPSA, 2006, 18(6): 18-21,37 |
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| Authors: | WANG Jing LIU Di-chen PENG Xi |
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| Affiliation: | School of Electrical Engineering, Wuhan University, Wuhan 430072, China |
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| Abstract: | The Two Way Automatic Communication System(TWACS) is implemented by modulating the power voltage at preselected zero of the voltage waveform of the distribution network.According to the characteristics of TWACS signal,its unique signal decoding mode is analyzed in the paper.Multi-channel transmission is achieved taking advantage of the orthogonal character of signal encoding,which can improve communication efficiency.The differential detection technique of TWACS signal is presented to eliminate harmonic interference and increase the signal strength.The theoretical analysis and simulation result indicate the feasibility of the proposed method. |
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| Keywords: | two way automatic communication system(TWACS) differential technique orthogonal multi-channel transmission signal detection |
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