Power carrier communication method and device

A power carrier communication and pilot signal technology, applied in electrical components, distribution line transmission systems, transmission systems, etc., can solve the problems of difficult data transmission, large time variability, signal attenuation, etc., to reduce the transmission rate, promote mutual Recognize and avoid the effect of network throughput reduction

Active Publication Date: 2011-07-06
SHENZHEN INST OF ADVANCED TECH
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Problems solved by technology

However, due to the inherent characteristics of the low-voltage distribution network, it is very difficult to achieve efficient and reliable data transmission on it
[0004] To sum up, using the power line in the power grid as a communication channel will have defects such as signal attenuation, interference, poor transmission environment, large impedance, and large time variation. It is very difficult to achieve efficient and reliable data transmission.

Method used

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  • Power carrier communication method and device

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Experimental program
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Embodiment Construction

[0025] figure 1 The topological diagram of the communication subnet on the smart grid is shown. The communication subnet on the smart grid includes a central node and nodes, and the central node sends data packets from other subnets on the smart grid to the nodes. When the data packets arrive at the central node, they are queued first, and each independent queue corresponds to a node. The task of the central node is to arrange these data packets to arrive at the designated node in time through the power line.

[0026] figure 2 A flow chart of a power carrier communication method is shown, and the specific process is as follows:

[0027] Step S1, information collection, acquiring pilot signals and obtaining node status information according to the pilot signals and then sending the node status information, including:

[0028] The physical layer receives the pilot signal from the node and collects the status information of the node. The node state information includes the no...

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Abstract

A power carrier communication method includes the following steps: an information acquisition step, a synchronization status message step, an information processing step and a communication step, wherein in the information acquisition step, a physical layer receives a pilot frequency signal to obtain channel status messages; in the synchronization status message step, the physical layer and a data transmission control layer synchronize the channel status messages; in the information processing step, a required data packet capable of communicating is obtained according to the channel status messages; and in the communication step, a time period is occupied in turn to transmit the required data packet capable of communicating. The method and the device realize the layer optimization of power carrier communication, effectively promote the mutual cognition, mutual coordination and interaction between the physical layer and a data transmission control layer, achieve the high efficiency and the reliability of data transmission, and are beneficial to transmitting high-speed data, voice, images and other multimedia business signals in a power grid.

Description

【Technical field】 [0001] The present invention relates to a communication method and device, in particular to a power carrier communication method and device. 【Background technique】 [0002] Smart grid is an intelligent transformation of traditional power grid. It uses modern communication technology, advanced sensing and measurement technology, and mathematical optimization method based on game theory to control power distribution, dispatch management and decision-making of power grid in real time. [0003] The most important communication technology in the development of smart grid is the traditional power carrier communication system. The power carrier communication system is a communication method that uses the low-voltage line of the distribution network to transmit high-speed data, voice, image and other multimedia services. However, due to the inherent characteristics of the low-voltage distribution network, it is very difficult to achieve efficient and reliable data...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54H04L29/08H04L29/06
Inventor 张旗李磊于峰崎
Owner SHENZHEN INST OF ADVANCED TECH
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