sinotech.org – Such as companies of telecommunications , the electric utilities also has a cable that stretched across the globe. The difference, the electric company has a network of electrical wires that reach more places, rather than fiber optics which is owned Telecommunications Company. This fact, obviously make electrical Cable as the vehicle with the best potential to provide the Internet connections to some places that not reached by the fiber optic cable.
The cable is one component of the network owned by electric utilities. Besides cable, small stations, transformers, electricity generator, and the other devices of connective to carry the electricity from electricity generation to the some homes or office.
When the electrical left the generation, he move to the substation, then its distributed to the wire that have high of voltage transmission. When it is used to transmit the broadband connection, a high voltage cable which is the first barrier. Electricity that flows on the transmission cable can be a high-voltage about 150 kV or even extra-high voltage above 500 kV. The magnitude of this voltage is not suitable for transmitting data.
As noted above, the electric current and RF use different frequencies. In order the data can be transmitted clearly from one point to another, then the required line, which supports the radio spectrum to vibrate without interferenced by other sources. Hundreds of thousands of volts of electricity does not vibrate at a fixed frequency. Electric current in the amount bulldoze all of the spectrum, and when moving in the RF spectrum used, it is certain signal transmission will drop or even fall apart.
BPL bypasses this problem by avoiding the use of high-voltage cable joint. This system lowers the voltage data to 7200 volts, or equal to the voltage supplied to the medium-voltage cables.
