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Power line carrier path search method fusing two-way automatic communication system (TWACS)

A power line carrier and path search technology, applied in distribution line transmission systems, electrical components, digital transmission systems, etc., can solve the problems of low reliability, attenuation with distance, poor anti-interference performance, etc., to achieve good transmission requirements, The effect of meeting transmission requirements and improving transmission performance

Inactive Publication Date: 2016-09-21
CHONGQING ELECTRIC POWER COLLEGE +2
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Problems solved by technology

Among many power line communication methods, the most widely used is power line communication (PLC). PLC realizes communication through high-frequency signal transmission on the power line. Its disadvantages are poor anti-interference performance and serious attenuation with distance. Therefore, in There is a common problem of low reliability in the application

Method used

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  • Power line carrier path search method fusing two-way automatic communication system (TWACS)
  • Power line carrier path search method fusing two-way automatic communication system (TWACS)
  • Power line carrier path search method fusing two-way automatic communication system (TWACS)

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Embodiment Construction

[0029] A power line carrier path search method fused with power frequency communication, comprising the following steps:

[0030] A. Use the power frequency communication (TWACS) signal as the path search signaling of the power line carrier communication (PLC), and select a node with a moderate distance as the relay node;

[0031] B. Determine the optimal relay node S;

[0032] C. Establish a central node path table for the concentrator to reach each communication terminal, and each distribution node establishes a sub-path table;

[0033] D. When the instruction information sent by the concentrator cannot be delivered to a certain node, select the suboptimal path, and if there is no suboptimal path, proceed to step E;

[0034] E. Repair path;

[0035] F. When the concentrator fails to send commands to multiple sub-node terminals according to the routing table, the routing table is re-established for all sub-node terminals.

[0036] Wherein, in the step A, when the signal-to...

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Abstract

The invention discloses a power line carrier path search method fusing a two-way automatic communication system (TWACS). The method comprises the following steps: A, using a TWACS signal as a path search signal of power line communication (PLC), and selecting nodes at moderate distances as relay nodes; B, determining an optimal relay node S; C, building a table of paths from a concentrator to center nodes of communication terminals, and building sub-path tables for distributed nodes; D, selecting a sub-optimal path when command information transmitted by the concentrator cannot be transmitted to a certain node, and carrying out a step E if the sub-optimal path is unavailable; E, repairing a path; and F, rebuilding a routing table for all sub-stations when the concentrator fails in transmitting command communication paths to a plurality of sub-node terminals according to the routing table.

Description

technical field [0001] The invention belongs to the technical field of low-voltage power line power frequency communication routing algorithms, and in particular relates to a power line carrier path search method integrated with power frequency communication. Background technique [0002] For the power line carrier communication (PLC) network on the low-voltage side of the distribution network, the power line channel is time-varying, and there is a problem of low communication reliability in practical applications. The power line TWACS has the advantages of strong anti-interference and anti-attenuation capabilities. In order to improve the reliability of the low-voltage distribution network, TWACS can be used as the path search signal of PLC. Using the power line as the medium to transmit intelligent power consumption information has the advantages of convenience and flexibility. Among many power line communication methods, the most widely used is power line communication ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54H04L12/721H04L12/751H04L45/02
CPCH04B3/54H04L45/02H04L45/12
Inventor 龙洋黄晓明苑佳楠
Owner CHONGQING ELECTRIC POWER COLLEGE
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