Overview of digital communication methods over power supply net-works


Аuthors

Martirosov V. E.*, Yegorov V. V.**, V. ***

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: marti@mai.ru
**e-mail: skb-4@bk.ru
***e-mail: zolotenkovamk@mai.ru

Abstract

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Keywords:

PLC; impulse noise; types of modulation; wire communication standards.

References

This review article discusses the issues of digital data transmission using power supply networks as communication channels. These data transmission systems belong to the PLC (Power Line Communications) technology class. PLC communication systems are widely used in industrial facilities and residential buildings for the implementation of automated systems for monitoring and accounting of energy resources (electricity, heat, water, etc.). In onboard power supply networks, these technologies can be used to provide remote access to distributed onboard systems for monitoring and automated control of their parameters, including in the context of intense electronic warfare. In terms of civilian applications, the surge in the development of PLC technologies in the 2000s can be observed in the construction of the so-called "smart home" concept. 
Due to the heterogeneity of the tasks solved with the involvement of PLC technologies, in the further consideration, we will limit ourselves to the class of PLC communication systems used in the transmission of data over standard 0.4 kV power supply networks. The purpose of this work is to investigate the problems of insufficient reliability and stability of digital communication in PLC systems used in practice, which are noted in the scientific and technical literature.
The article provides a comprehensive review of the scientific and technical literature and analyzes a number of well-known standard technical solutions aimed at increasing the speed and noise immunity of PLC systems. For the PLC communication system, which is based on the power supply network of a multi-storey building, studies of the interference environment in the range of operating frequencies regulated by international standards were carried out. In the course of the studies, the nonlinear properties of the PLC communication channel, which is based on a typical power supply network, were identified, which significantly affect the quality and stability of the transmission of information data. Their consideration is mandatory when choosing the type of modulation and the method of transmitting digital data in general.



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