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Electric power data multi-way communication system and multi-way centralized meter reading system

A technology for power data and communication systems, applied in electrical signal transmission systems, signal transmission systems, instruments, etc., can solve the problems of limited PLC propagation distance, increase in system cost, and decrease in available bandwidth for network performance users, and achieve stable and reliable communication. Improve anti-attenuation and anti-noise ability, fast effect

Active Publication Date: 2014-01-08
WAHLAP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Disadvantages of carrier communication: Due to the influence of the power grid, the transmission distance of PLC is limited, and the transmission distance without relay in the low distribution network is generally below 250m. To realize the full power line access from the distribution transformer to the user socket, it is necessary to use Relay technology. This will inevitably increase the cost of the system
The fluctuation of power load also has a certain impact on the throughput of the PLC access network. Since multiple users share the channel bandwidth, when the number of users increases to a certain extent, the network performance and user available bandwidth decrease

Method used

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  • Electric power data multi-way communication system and multi-way centralized meter reading system
  • Electric power data multi-way communication system and multi-way centralized meter reading system
  • Electric power data multi-way communication system and multi-way centralized meter reading system

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Embodiment 1

[0044] refer to figure 1 , The preferred embodiment of the power data multiplex communication system includes a main station terminal 1, a PLC network 2, a concentrator 3 and several instruments. In one embodiment, the meters include an electricity meter 4 , water meter 5 or heat meter 6 , wherein the master station terminal 1 , the concentrator 3 and the meters 4 , 5 , 6 are communicatively coupled via the PLC network 2 . The embodiment further includes a concentrator end module 31 arranged at the end of the concentrator 3, and meter end modules 41, 51, and 61 respectively arranged in the meters 4, 5, and 6. The concentrator end module 31 communicates with the power line protocol (such as Q / GDW376.2 protocol or DL / T645 protocol) are respectively connected to the meter end modules 41, 51, 61.

[0045] Here, those skilled in the art should understand that the connection between the meter end modules 41, 51, 61 and the concentrator end module 31 is not a simple replacement bas...

Embodiment 2

[0063] refer to image 3 , based on the foregoing embodiments, an embodiment of a multi-channel centralized meter reading system (hybrid system) is provided, which includes a master station terminal and a PLC network 201 similar to the foregoing, and is specifically provided with a wireless network 101 (such as a microwave communication network ), concentrator 3 and meters 4,5,6,7. The concentrator 3 and the instruments 4, 5, 6, 7 are communicatively coupled through the PLC network 2 or the wireless network 101, similarly further comprising a concentrator end module arranged at the concentrator 3 end, and a concentrator end module arranged at the instrument 4, 5, 6, 7 end A meter end module, and a conversion module 8. The concentrator end module is connected to the meter end module or the conversion module 8 through the power line protocol, and in one embodiment, the meter in the wireless network 101 is connected through the conversion module 8 .

[0064] Figure 4 schemati...

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Abstract

The invention discloses an electric power data multi-way communication system. The electric power data multi-way communication system comprises a main station terminal, a PLC (programmable logic controller) network, a centralizer and a meter, wherein the main station terminal, the centralizer and the meter are subjected to communication and coupling through the PLC network. The electric power data multi-way communication system further comprises a centralizer end module arranged at the centralizer end as well as a meter end module arranged at the meter end; the centralizer end module is connected with the meter end module through an electric power line protocol. The invention also discloses a multi-way centralized meter reading system. According to the electric power data multi-way communication system and the multi-way centralized meter reading system disclosed by the invention, communication modules are intelligent nodes, and intelligent modules interact for instant networking, and the networking is not controlled by the centralizer; real-time, rapid and stable communication is achieved; the antidamping and noise resistant capabilities of the systems are improved further on the networking mechanism based on a physical layer by fully utilizing the intelligent characteristic of a chip of the physical layer; the technical difficulties of network time and sequence, network conflict, network efficiency, effective detection of repeated data packets and the like are solved based on the chip CSMA (carrier sense multiple access), and the stability and reliability of communication are ensured.

Description

technical field [0001] The invention mainly relates to a multi-channel communication system for electric power data in an electric power system, and further relates to a multi-channel centralized meter reading system realized based on the system. Background technique [0002] In the current power system, the advantages of power line carrier (PLC) communication technology are well known. It is a ready-made communication channel with the widest coverage, and it can form an intelligent communication network with the least cost. However, the characteristics of high attenuation, high noise, and large time-varying characteristics on the power line are huge technical obstacles for the low-voltage power line carrier communication technology. In addition, the application of low-voltage power line carrier technology is limited by the carrier frequency, emission amplitude, harmonic pollution and other indicators, which greatly shortens the communication distance between nodes in the sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08C19/00G08C17/02
Inventor 徐京生
Owner WAHLAP TECH CO LTD
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