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Power line carrier communication system based on digital-to-analog joint frequency-division and full-duplex method

A technology of power line carrier and baseband signal, which is applied in the direction of distribution line transmission system, transmission system, duplex signal operation, etc. It can solve the problem of network coverage, poor service guarantee ability, inability to adapt to complex, time-varying, and restricted PLC technology applications, etc. problems, to achieve the effect of improving network data transmission efficiency and improving communication stability

Active Publication Date: 2019-04-16
北京慧通微电科技有限公司
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Problems solved by technology

In this scenario, the half-duplex mode cannot meet the application requirements
In addition, the actual application shows that this fixed-frequency working mode cannot adapt to the complex, time-varying, and geographically diverse power line channel environment, resulting in poor network coverage and service guarantee capabilities, which restricts the high delay requirements of PLC technology in relay protection. applications in the smart grid

Method used

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  • Power line carrier communication system based on digital-to-analog joint frequency-division and full-duplex method
  • Power line carrier communication system based on digital-to-analog joint frequency-division and full-duplex method
  • Power line carrier communication system based on digital-to-analog joint frequency-division and full-duplex method

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. On the contrary, the invention covers any alternatives, modifications, equivalent methods and schemes within the spirit and scope of the invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the detailed description of the present invention below. The present invention can be fully understood by those skilled in the art without the description of these detailed parts.

[0044] The present invention will be further described below in conjunction with the accompanying drawings and ...

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Abstract

The invention provides a power line carrier communication system based on digital-to-analog joint frequency-division and a full-duplex method. The system is suitable for band range from a few tens ofkiloherts to hundreds of megahertz; PLC equipment divides sending working band and receiving working band through an analog domain filter, two working bands are further refined by simultaneously utilizing the digital domain frequency conversion and the filter, thereby realizing multi-band and multi-bandwidth PLC full-duplex technology.

Description

technical field [0001] The invention belongs to the technical field of electric power communication of smart grid, and specifically relates to a power line carrier communication system based on digital-analog joint frequency division and a full-duplex method, which is applied to a power line carrier system in the frequency range of tens of kilohertz to tens of megahertz . Background technique [0002] Power line carrier communication is a unique communication mode of power system, which has natural network channel resources and application convenience. However, affected by basic characteristics such as power grid topology, line characteristics, and load characteristics, the power line carrier channel has the characteristics of strong noise interference, large attenuation, and complex impedance changes, and the channel characteristics have obvious frequency selectivity characteristics. In addition, channel characteristics such as noise and attenuation also show regional diff...

Claims

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Application Information

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IPC IPC(8): H04B3/54H04L5/14H04B1/40H04B1/00
CPCH04B1/005H04B1/40H04B3/54H04L5/14
Inventor 汪靖李世英刘瀚文卢文峰
Owner 北京慧通微电科技有限公司
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