Distribution network automation communication system

Abstract

The invention discloses a distribution network automation communication system, which is characterized in that an optical fiber access device (1) is connected to four optical modems (4) and a wireless public network acquisition device (3) of a first feeder terminal unit (9), the optical modems (4) adopt a double-loop network connection mode, connected nodes are connected in series in a bidirectional closed-loop manner, one of the optical modems (4) is connected to a first network switch (5), the first network switch (5) is connected to a communication management machine (7) connected with a switch cabinet (8), one of the optical modems (4) is connected to a second network switch (6), the second network switch (6) is connected to a carrier acquisition device (2) connected with a second feeder terminal unit (10), and one of the optical modems (4) is connected to a transformer terminal unit (11). The distribution network automation communication system is stable and reliable in communication, wide in coverage range and high in self-healing capacity.

Description

Technical field: [0001] The invention relates to a distribution network automation communication system, which belongs to the technical field of automation communication. Background technique: [0002] Due to the development of my country's economy and the improvement of people's living standards, the power consumption is increasing, and there are higher requirements for power companies in terms of power supply reliability, power quality and service. If the traditional technology is used, the safe, high-quality and economical operation of the power distribution network cannot be realized. Under such background requirements, it is necessary to use automation technology in the power distribution network. [0003] The communication system is an important part of the distribution network automation system, its performance and reliability [0004] It has a decisive impact on the realization of the whole system function and operation reliability of distribution network automa...

AI Technical Summary

Problems solved by technology

Traditional distribution network automation communication systems usually use optical fiber, wireless communication, power carrier communication, twisted pair and other data transmission methods. It is powered by a power supply and requires two optical fibers for long-distance transmission, which is not safe and wastes resources. Moreover, this chain network structure is poor in network security. If the intermediate optical fiber route fails, part of the communication in the system will be interrupted. Therefore, this ordinary optical fiber communication can no longer satisfy the stable operation of the distribution network automation system, and it is imperative to study a reliable and stable communication system

Traditional optical fiber communication has small data transmission volume, small coverage area, low fault judgment and self-healing ability

Moreover, wireless communication, power carrier communication, and twisted-pair transmission methods are susceptible to interference from some technical factors (terrain obstacles, networking modes, lightning protection, and network security, etc.), resulting in unstable operation of the power grid.

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