PLC regulation approved in Brazil opening way for smart grids


Brasilia, Brazil — (METERING.COM) — May 13, 2009 – Brazil’s national telecommunications agency Anatel (Agência Nacional de Telecomunicações) has recently approved Resolution 527 on the regulation of broadband over powerline (BPL), opening the way for the implementation of smart grids in the country.

The regulation establishes the criteria and technical parameters that allow the use of this technology at frequencies between 1,705 kHz and 50 MHz.

The agency has taken precautions to ensure that BPL systems do not cause harmful interference to other services, such as amateur radio and the broadcasting of sound and images. The mandatory use of filters able to attenuate unwanted radiation is established. Systems also should have a mechanism that allows remote shutdown, via a control center, of the unit causing harmful interference, if other techniques to alleviate the interference do not achieve the expected result.

The operation of BPL on medium voltage networks is not permitted to cause unwanted interference in bands of exclusion, i.e. the radio bands allocated to aeronautical mobile services and amateur radio. The limits of unwanted radiation caused by BPL systems within the protected zones of coastal stations assigned to the maritime mobile services shall be mitigated to a level at least 10 dB below the limits specified in the regulation. In the case of the protected zones of ground stations, it is prohibited to operate such systems in the range 1,705 kHz to 30 MHz.

The equipment that comprises the BPL system must be certified or accepted by Anatel, in accord with the regulations, and meeting the appropriate standards for the electrical system as laid down by the energy regulator, Aneel. Existing systems that do not comply with the new regulation may operate until June 30, 2010, when they should be disabled.

With this new regulation, Anatel has enabled new technologies to be used to the benefit of society through the shared use of the electromagnetic spectrum, the agency said in a statement.