网络参数对低压宽带电力线信道的影响

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Abstract On the broadband power line channel, there is little research nowadays on the influence of power grid structure related to power line carrier performance. Multipath effect and frequency selective fading are difficultly explained from existing models, they have insufficient support to the communication between power line nodes as well as the relay by network topology, which limits the performance improvement for power line carrier communications. For the sake of the aforementioned reasons, this work analyzes the influence of different network topologies on low-voltage broadband power line channel (BPLC) characteristics in 2~30MHz frequency range by simulating and modeling the power line communication channel based on transmission line theory. The frequency responses of the low-voltage BPLC are obtained by changing the lengths of the direct and branched lines, number of concentrated branches, number of distributed branches and load impedances. The time-domain impulse responses are also studied by using inverse Fourier transform. The results show that aforementioned network parameters affect the positions and attenuation of the notches and peaks in the amplitude responses. As a result, the time-domain impulse responses will be attenuated and distorted. The results in this paper are useful in the applications of broadband power line communication technology to energy network.

Key words： Broadband power line channel (BPLC), channel characteristic, frequency selective, multipath effect, notch

Published: 04 January 2017

PACS:	TN913.6
	TM73

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	Articles by authors
	Lu Wenbing
	Zhang Hui
	Zhao Xiongwen
	Suo Chaonan

Cite this article:

Lu Wenbing,Zhang Hui,Zhao Xiongwen等. The Effect of Network Parameters for Low-Voltage Broadband Power Line Channels[J]. Transactions of China Electrotechnical Society, 2016, 31(增刊): 221-229.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I增刊/221

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