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Low-voltage power line data communication system and method

A data communication system, low-voltage power line technology, applied in the field of power line communication systems, can solve problems such as inability to meet demand, line distance limitations, etc.

Active Publication Date: 2005-01-26
CHINA ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, in the existing system, the line distance is limited, and the master station equipment that couples the information of the data network to the power line cannot meet the needs of all users on the low-voltage power line network downstream of the same low-voltage transformer

Method used

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  • Low-voltage power line data communication system and method
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  • Low-voltage power line data communication system and method

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Embodiment Construction

[0021] As shown in Figure 1, the low-voltage power line communication system of the present invention includes three main components, namely the main station (HE, Head End), the repeater (HG, HomeGateway) for signal amplification and regeneration and the user terminal ( CPE, Customer Premises Equipment). The communication in which the information flow is in the direction of HE-HG, HG-CPE or HE-CPE is called downlink communication; the communication in which the information flow is in the direction of HG-HE, CPE-HG or CPE-HE is called uplink communication.

[0022] As shown in Figure 1, there is no special requirement for the position of the main station equipment used to couple data information to the low-voltage power line, but it is best to be together with the MV / LV (Medium Voltage / Low Voltage, medium voltage-low voltage) distribution transformer Installed in the distribution room of the community. The master station acts as a gateway to forward data between the power line...

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Abstract

The invention discloses a low voltage power line data communicating system and method, where host station device is coupled with low voltage power line and connected with data network, which acts as a gateway to transmit data between the low voltage power line and the data network, including data transmission of user terminals between power line interface and user data interface. It also uses relays, coupled with the low power line between the host station device and each user terminal to relay data signal transmitted by the host station device, and including a first communication device and a second communication device. It effectively increases system communication distance, thus realizing high speed data information transmission on low voltage power network in the same range of distributing transformer.

Description

technical field [0001] The invention relates to a power line communication system and method for realizing high-speed data communication in a low-voltage distribution network. Background technique [0002] Power Line Communication Technology (PLC) refers to a communication method that uses power lines to transmit data and voice signals. Power line communication has a history of decades of development. On the medium and high voltage transmission network (above 35kV), the power carrier machine uses a lower frequency (9-490kHz) to transmit telecontrol data or voice at a lower rate. It is a power line communication technology. One of the main forms of application. With the deepening of domestic urban and rural distribution network transformation, many manufacturers have begun to develop distribution network carrier machines for medium-voltage (10kV) distribution network communications, and the data transmission rate can reach 1200bps. In the low-voltage (220V) field, PLC techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54
Inventor 赵丙镇李祥珍刘家亮沈志民王丽平李建岐
Owner CHINA ELECTRIC POWER RES INST
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