does the distribution transformer in between effect the data flowing through powerline. or do we need to use some other techniques, i know about radio frequencies. but i want to know about powerlines used.
The overall method is called power line carrier. Utilities have been using it for decades to send metering and control data through high voltage transmission lines.
As you have surmised, the distribution transformer is an obstacle to broadband over power lines. The design of the transformer is optimized for power frequencies (50 or 60 hertz, depending on where you are located). High speed data transfer requires significantly higher frequencies, and the core iron of a distribution transformer cannot realign quickly enough to pass those frequencies. In fact, distribution transformers are designed to be insensitive to higher frequencies so as to minimize the effects of harmonics.
A variety of techniques have been tried with varying degrees of success. Most require placing a capacitive bypass at each distribution transformer to transfer the data from the high voltage side to the low voltage side. Wikipedia has a pretty good article on the subject here.
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Use a line trap, which is mainly a self in parallel with a capacitor (and a surge arrester) in order to block the data frequencies to enter the transformer area (i mean a substation, for instance).This will definitely solve your problems. Carefull! the other end of line must be equipped with the same (or a similar) line trap, because, if not, your data frequencies would affect the whole distribution network, which works only with 50 or 60 hertz. This method is expensive if your network voltage is under 33 kV, but definitely the best.
BRZK
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Data flowing through powerlines.
Re: Data flowing through powerlines.
