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Why is Power Line Carrier (PLC) conceder as the best Media for AMR?
Power Line Carrier (PLC) communication systems provide electric utilities with important communication links to implement load management and distribution automation.
Power line communication actually has been a conventionally used technology, implemented for automatic power distribution system, remote meter reading system and remote transfer processing system at power companies. They operate with less than a few kHz and a few dozen bps in transmission speed. Since it was difficult to accommodate large capacity communication with such a conventional method, it was mainly used for low speed communication for monitoring and control.
Power line carrier communication is divided into high voltage carrier of above 35KVs communication;10 KV distribution networks carrier communication and communication of public(400 V below) line of electric power line carrier.On the technique high voltage carrier communication is mainly serve to the power industry inside traffic communication. Because the network is dadicated for use , its simple data communication is already grown up .The public distribution power grid of low voltage connected to thousand ten thousand doors is just communication network of maximum physics .But realizes on that network the communication has been whole world technology the worker's research lessons .Because of in the low voltage electric power line contains many technique problem:Such as the network is unnormal, there are many nodal points, many separation, with the interference of random etc..Can also say the public electric power line impedance toward communication is an indetermination, none rule, communication net.Bring on the technique very big difficulty, so it become the big challenge lesson in communication field. Near resent 10 yesrs,the technology personnels in the United States, England, Germany, Israel, China...etc. always be engaged in the technique research and the development of this aspect.So far, domestic and international enterprises have already develop outed some product used for the plc communication: such as the development's power line carrier telemetering product have obtained pleased success, but can not yet match the consumer usage the request, because of the appropriation chip's reason, the reading ok rate of plc telemetering system only attain 90% or so.For all that, the technique of current our country at that aspect belong to the advanced array.Practice the verification to use to import the universal communication ship set is impossible to realize the dependable requirements of public electric power net communication of our country.But with the development of market and technique requirement, future public line plc communicaton must become a very huge communication netwoek, and also become a large market sighted by many enterprices.
What is AMR ?
What is Spread Spectrum Carrier ?
Why is Power line Carrier (PLC) conceder as the best Media for AMR ?
