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Channel-sensing medium voltage power line communication data transmission method

A data transmission method and power line communication technology, which is applied in the distribution line transmission system, transmission monitoring, transmission system, etc., can solve the problem of data transmission optimization that has not yet been considered to obtain multiple channel parameters

Active Publication Date: 2018-02-09
STATE GRID HUNAN ELECTRIC POWER +3
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Problems solved by technology

[0003] In the existing medium-voltage power line communication transmission methods, the signal-to-noise ratio parameter of a single channel is usually used as the basis for selecting the modulation mode for data transmission, and it has not been considered to obtain multiple channel parameters from the perspective of channel perception as the basis for selecting the modulation mode for data transmission. optimization

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  • Channel-sensing medium voltage power line communication data transmission method
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Embodiment Construction

[0028] The following will be figure 1 The medium-voltage power line communication system shown is taken as an example, and the channel-aware medium-voltage power line communication data transmission method of the present invention is further described in detail.

[0029] see figure 1 , as the distribution network terminal of the PLC slave station (feeder terminal FTU, transformer monitoring terminal TTU and power distribution monitoring terminal DTU) built-in PLC communication module, 10kV isolator reduces signal noise interference of distribution network terminal, distribution network terminal through 10kV coupler The signal is coupled to the 10kV line, and the power line communication data transmission with the PLC master station is realized through the line controller. Among them, the distribution network terminal supports channel state monitoring, and obtains data information on the medium-voltage power line communication channel state; the modulation methods used in this...

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Abstract

The invention discloses a channel-sensing medium voltage power line communication data transmission method comprising the steps of 1, acquiring data information of the channel state of the medium voltage power line communication of specified N transmission cycles before a current transmission cycle at each transmission cycle, wherein the data information of the channel state of the medium voltagepower line communication comprises a plurality of state parameters; 2, comprehensively computing a channel quality assessment parameter of the medium voltage power line communication of the current transmission cycle by using the plurality of state parameters of the data information of the channel state of the medium voltage power line communication; 3, selecting a data transmission modulation mode of the current transmission cycle according to the channel quality assessment parameter; and 4, transmitting data according to the selected data transmission modulation mode. According to the methodprovided by the invention, data transmission efficiency of the medium voltage power line communication can be effectively improved, and a transmission error rate can be reduced.

Description

technical field [0001] The invention relates to the technical field of medium-voltage power line communication, in particular to a channel-aware medium-voltage power line communication data transmission method. Background technique [0002] Medium-voltage power line communication (Power Line Communication, PLC) is a unique communication method for power systems. The voltage level of medium-voltage power lines is usually 10kV. Using medium-voltage power lines as communication media to realize signal transmission has the advantages of cost saving, convenient installation and flexible deployment. . [0003] In the existing medium-voltage power line communication transmission methods, the signal-to-noise ratio parameter of a single channel is usually used as the basis for selecting the modulation mode for data transmission, and it has not been considered to obtain multiple channel parameters from the perspective of channel perception as the basis for selecting the modulation mod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54H04B17/309
CPCH04B3/54H04B17/309
Inventor 陈石东陈向群陆俊王星星胡军华黄瑞陈浩罗旻昱
Owner STATE GRID HUNAN ELECTRIC POWER
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