Cyclic spectral analysis of power line noise in the 3–200 kHz band

2013 IEEE 17th International Symposium on Power Line Communications and Its Applications Pub Date : 2013-03-24 DOI:10.1109/ISPLC.2013.6525870

K. Nieman, Jing Lin, M. Nassar, K. Waheed, B. Evans

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引用次数: 43

Abstract

Narrowband OFDM Power Line Communication (NB-OFDM PLC) systems are a key component of current and future smart grids. NB-OFDM PLC systems enable next-generation smart metering, distributed control, and monitoring applications over existing power delivery infrastructure. It has been shown that the performance of these systems is severely limited by impulsive, non-Gaussian additive noise. A substantial component of this noise has time-periodic statistics (i.e. it is cyclostationary) synchronous to the AC mains cycle. In this work, we analyze the cyclic structure of power line noise observed in a G3 PLC system operating in the CENELEC 3-148.5 kHz band. Our contributions include: (i) the characterization of noise measurements in several urban usage environments, (ii) the development of a cyclic bit loading method for G3, and (iii) the quantification of its throughput gains over measured noise. Through this analysis, we confirm strong cyclostationarity in power lines and identify several sources of the cyclic noise.

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3 - 200khz频段电力线噪声的循环频谱分析

窄带OFDM电力线通信(NB-OFDM PLC)系统是当前和未来智能电网的关键组成部分。NB-OFDM PLC系统使下一代智能计量、分布式控制和监控应用能够超越现有的电力输送基础设施。研究表明，这些系统的性能受到脉冲非高斯加性噪声的严重限制。该噪声的一个重要组成部分具有时间周期统计(即它是周期平稳的)，与交流电源周期同步。在这项工作中，我们分析了在CENELEC 3-148.5 kHz频段运行的G3 PLC系统中观察到的电力线噪声的循环结构。我们的贡献包括:(i)几种城市使用环境中噪声测量的特征，(ii) G3循环比特加载方法的开发，以及(iii)其吞吐量增益与测量噪声的量化。通过分析，我们确认了电力线的强循环平稳性，并确定了几个循环噪声源。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2013 IEEE 17th International Symposium on Power Line Communications and Its Applications

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