Hybrid protocol-based intelligent power distribution network wireless communication system

Abstract

The invention discloses a hybrid protocol-based intelligent power distribution network wireless communication system. The system comprises a terminal node, a power distribution network gateway and a wired network, wherein the terminal node is controlled by an intelligent power distribution network control center; the wired network is connected with a transformer substation; the terminal node is a far terminal unit (FTU) of a power distribution substation; the wired network of the transformer substation communicates with the power distribution network gateway through a wired network or a wireless network; the power distribution network gateway communicates with the terminal node through wireless communication. Self management, self configuration and self optimization functions of the wireless communication system are realized, the wireless communication system supports switching functions among a plurality of wireless protocols, such as zigbee , 802.11, WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronization Code Division Multiple Access), TD-LTE (Time Division-Long Term Evolution) and FDD-LTE (Frequency Division Duplex-Long Term Evolution), supports a hierarchical management function on QoS (quality of service) of services, meets the requirements of remote signaling, remote measurement and remote control of a power distribution network, supports a data fusion function, and reduces redundancy and data transmission amount.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a wireless communication system for intelligent power distribution network based on a hybrid protocol. [0002] Background technique [0003] At present, wireless communication technology mainly adopts the following methods: [0004] 1) Use the public network based on mobile operators for transmission, such as GPRS / CDMA / 3G and other wireless communication methods. The GPRS / CDMA / 3G wireless public network communication method has the characteristics of low deployment cost and mature industrial chain, but due to the dependence on public network operators, the data transmission bandwidth is insufficient, the stability is lacking, and its security, reliability, and real-time performance cannot be guaranteed. When the number of access users increases, the communication rate is seriously affected. Therefore, it cannot meet the requirements of high reliability and low transmis...

AI Technical Summary

Problems solved by technology

[0010] (1) Optical fiber EPON (Ethernet Passive Optical Network, Ethernet Passive Optical Network) technology, due to the characteristics of many distribution network reconstruction projects and frequent changes in network architecture, the construction cost is high, and the laying of optical cables is difficult and expensive; due to the distribution network The geographical range is very wide, the number of sub-stations and remote terminals is large, and the economic investment of using optical fiber communication is too large

[0011] (2) Power line carrier communication mode, low bandwidth, reliability, general real-time performance, and poor networking flexibility

[0013] 1) Using the public network based on the mobile operator for transmission, relying on the public network operator, the data transmission bandwidth is insufficient, the stability is lacking, and its security, reliability, and real-time performance cannot be guaranteed. When the number of access users increases, the communication rate will decrease. severely affected

Therefore, it cannot meet the requirements of high reliability and low transmission delay in the data transmission process of distribution network

[0014] 2) Using 802.15 wireless sensor network, 802.11 wireless local area network and other technologies, the power and transmission distance are limited, and it is difficult to meet the medium and long-distance transmission requirements of distribution network terminals

[0015] 3) The use of wireless private network communication technology is greatly affected by external conditions such as terrain and climate, resulting in poor system reliability and real-time performance, low data transmission rate, backward functions, and poor system function scalability

However, the application maintenance and configuration of these wireless private network standards are not flexible and convenient enough, and the entire private network requires a dedicated maintenance team, which is costly

On the other hand, it needs the support of a dedicated wireless frequency band, and it is necessary to apply for a dedicated frequency band from the non-committee. The current frequency band resources are tight, and it is difficult for the country to approve additional dedicated frequency bands.

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