Application of Optical Fiber Communication Technology in Power System
Power communication is mainly for the automatic control, commercial operation and realization of modern management services of the power grid. It is the foundation of the power grid security and stability control system and dispatch automation system, the guarantee for the commercialization of power market operations, an important prerequisite for realizing the modern management of the power system, and the basis for the diversification of non-electrical industry operations.
The application of optical fiber communication in power communication was initially to lay ordinary optical cables by following the traditional methods of telecommunication sector, such as buried, pipeline, overhead, etc., to form a power optical fiber communication system. As we all know, the power system is a whole composed of the production, transmission, distribution and consumption of electrical energy.
In order to realize cross-regional and long-distance electric energy transmission, the power system has built high-voltage transmission lines all over the country; in order to meet the needs of urban and rural people for production and living, there are also transmission and distribution poles and channels that crisscross, densely covered streets and villages…
Structure and Characteristics of Electric Power Communication Network
The power communication network is composed of optical fibers, microwaves and satellite circuits. A multi-user, multi-functional integrated communication network composed of switchboards and other equipment.
Several main ways of power communication:
Power line carrier communication. Power lines are mainly used to transmit power frequency current. If the voice and other information are converted into high frequency weak current through the carrier machine, and transmitted by the power line, this is the power line carrier communication, which has the unique advantages of high channel reliability, low investment, quick effect, and synchronization with the power grid construction.
Besides. In the power line carrier communication, there are also methods such as the insulated ground wire carrier that uses the overhead ground wire of the power line to transmit the carrier signal. Compared with the ordinary power line carrier, the insulated ground wire carrier is not affected by the line power failure maintenance or the ground fault of the transmission line, and the ground wire is in an insulated state, which can reduce a large amount of power loss.
Optical Fiber Communication. Because optical fiber communication has many advantages such as strong anti-electromagnetic interference ability, large transmission capacity, frequency bandwidth, and low transmission loss, it was first applied in the power sector and developed rapidly as soon as it came out. In addition to ordinary optical fibers, some special optical fibers are also widely used in power communication.
other. There are also traditional open-line telephones, audio cables and emerging spread spectrum communications in the power communication network.