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首页> 外文期刊>International Journal of Electrical Power & Energy Systems >Numerical evaluation of broadband transmission characteristics of underground low-voltage networks - Introducing techno-pedagogical (TP) method
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Numerical evaluation of broadband transmission characteristics of underground low-voltage networks - Introducing techno-pedagogical (TP) method

机译：地下低压网络宽带传输特性的数值评估-技术教学法（TP）的引入

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摘要

This paper considers transmission characteristics of low-voltage/broadband over power lines (LV/BPL) channels associated with the underground power distribution networks. Also, this paper introduces to electrical and computer engineering (ECE) students the techno-pedagogical (TP) method that is suitable for designing BPL networks in underground distribution power grids. The contribution of this paper is threefold. First, using the already verified hybrid method and the proposed TP method, the underground LV/BPL transmission channel is investigated with regard to its spectral behavior, the usable bandwidth and the end-to-end signal attenuation. Both methods agree that the above features depend on the frequency, the physical properties of the cables used, the end-to-end -"LOS"- distance, and the number, the electrical length and the termination of the branches encountered along the end-to-end BPL signal propagation. Second, TP method reveals the broadband transmission potential of underground LV/BPL networks to ECE students in a simple way; underground LV power grids are a potentially excellent communications medium, offering low-loss characteristics over 200 m repeater span well beyond 100 MHz. Third, ECE students can understand the coexistence opportunities of BPL systems with other existing broadband telecommunications technologies in a unified distribution smart grid (SG) environment.
机译：本文考虑了与地下配电网相关的低压/宽带电力线（LV / BPL）通道的传输特性。此外，本文还向电气和计算机工程（ECE）学生介绍了适用于设计地下配电网中BPL网络的技术教学（TP）方法。本文的贡献是三方面的。首先，使用已经验证的混合方法和建议的TP方法，研究地下LV / BPL传输通道的频谱特性，可用带宽和端到端信号衰减。两种方法都同意上述特征取决于频率，所用电缆的物理特性，端到端的“ LOS”距离以及端部遇到的分支的数量，电气长度和端接到端的BPL信号传播。其次，TP方法以一种简单的方式向ECE学生揭示了地下LV / BPL网络的宽带传输潜力。地下低压电网是一种潜在的优秀通信介质，在200 m中继器范围内（远超过100 MHz）具有低损耗特性。第三，ECE学生可以在统一分布智能电网（SG）环境中了解BPL系统与其他现有宽带电信技术的共存机会。

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