Intelligent distribution automation communication system for power grid

Abstract

The invention relates to an intelligent distribution automation communication system for a power grid. The intelligent distribution automation communication system consists of communication networks among a main station layer, a sub-station layer and a terminal layer. The intelligent distribution automation communication system has the main technical characteristics that the main station layer is connected with the sub-station layer through an SDH (Synchronous Digital Hierarchy) optical fiber communication network, the sub-station layer is connected with the terminal layer through optical fibers, and communication terminal equipment of the terminal layer is connected with distribution transformer terminals through Ethernet, wireless or carrier communication manners. According to the intelligent distribution automation communication system, a backbone communication network is formed by using an EPON (Ethernet Passive Optical Network) optical communication technology, and carrier and wireless communication manners are adopted to supplement relatively-dispersive terminal sites where optical cables are hard to be laid, so that an effective solution for the implementation of distribution automation communication engineering of central urban is provided. The intelligent distribution automation communication system has the characteristics of small investment, convenience in implementation, strong practicability, low cost, flexibility in networking, and the like, the difficulty that the optical cables are hard to be laid in large scale in central urban of cities is solved, and a basic guarantee is provided for the efficient transmission of information flow.

Description

technical field [0001] The invention belongs to the field of electric power distribution network automation, in particular to an intelligent power distribution automation communication system. Background technique [0002] Distribution automation is one of the important contents of the construction of a strong smart grid. It is based on the primary grid equipment, takes the distribution automation system as the core, and comprehensively utilizes various communication methods to realize the monitoring and control of the distribution system. Information integration with relevant application systems realizes scientific management of power distribution systems. To realize distribution automation, communication is a key link. Due to the complex structure and many branches of the urban distribution network, a single communication method is difficult to meet the needs of the distribution automation communication system. Therefore, the State Grid Corporation of China Automation Tec...

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Problems solved by technology

The optical fiber EPON communication method has been widely recognized for its advantages of high speed, low cost, and flexible networking, and has become the main communication method for the construction of distribution automation communication systems. Because the optical fiber EPON communication method needs to lay optical cables, but in the urban distribution network Among them, there are still a large number of areas or sites where it is difficult or even impossible to lay optical cables, and it is impossible to realize the smart grid power distribution automation communication system in the form of optical fiber EPON communication

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