The distribution automation system of intelligent distribution network system is composed of master station, communication system and automatic monitoring terminal equipment, which forms a complete information transmission and processing system and realizes remote management of distribution network operation. For intelligent distribution network system, communication system is the key and core to realize data transmission. The communication system accurately transmits the control command of the master station to a plurality of remote terminals, and collects the data information of the running state of the remote equipment to the control center. The communication system of intelligent distribution network can be composed of various communication modes, mainly using optical fiber and power carrier communication modes.
Automatic monitoring terminal equipment includes feeder terminal equipment (FTU), distribution transformer terminal equipment (TTU) and switching station terminal equipment (DTU).
In the past few years, smart distribution network projects and technologies have been at the forefront of smart grid popularization. With the implementation of smart grid construction in major countries around the world and the increase of policies and capital investment in various countries, the smart distribution network market will grow rapidly in the future. Among them, developed countries mainly need to upgrade the original distribution network equipment, while developing countries mainly need to build new intelligent distribution network systems. The global smart distribution network market will grow from $2.5 billion in 20 10 to $9.5 billion in 20 15, with a compound annual growth rate of over 30%.
At present, China's intelligent distribution network is still in its infancy. At present, the feeder automation rate of domestic urban distribution network is less than 10%, and it is still in the pilot and preliminary construction stage. With the country stepping up the construction of smart grid, smart distribution network will become a new round of investment hotspot in China's power industry, with broad market space in the future. Distribution automation began in 2009 and expanded from the first five pilot cities to more than 40 cities in 20 12. According to the national grid planning, due to the obvious improvement of feeder rate and power supply reliability in pilot cities, about 300 cities across the country will start the construction of distribution automation during the Twelfth Five-Year Plan period. During the Twelfth Five-Year Plan period, the total market capacity of distribution intelligent terminals and main stations will reach 23 billion yuan and 3.6 billion yuan respectively, and the total market capacity will be close to 28 billion yuan. Distribution automation has great development potential in the next few years.