brd at iimetro.com.au
Tue Mar 24 16:36:06 EST 2009
stephen at melbpc.org.au wrote:
> Now the IEEE have just ratified BPL standards, let's you and i simply
> agree to wait and see what happens to emerging BPL technologies. Yes?
Let me try and lift the fog a little. This is not a dig at you, it's
actually quite a complex and confusing subject and the term "Broadband
over Powerline" is open to misinterpretation.
Here is an IEEE report:
IEEE Approves First Standard for Broadband Over Powerline Hardware
PISCATAWAY, N.J., USA,13 January 2009 -- The IEEE has approved the
industry's first standard for Broadband Over Power Lines (BPL).IEEE
1675™, "Standard for Broadband Over Powerline Hardware," provides
testing and verification standards for the commonly used hardware,
primarily couplers, for BPL installations, and provides suggested
installation methods to supplement a utility's or contractor's
BPL provides the ability to send high-speed digital data over the power
lines between substations and homes and offices, turning every wall
outlet into a portal to the Internet."This standard will give both power
utilities and the BPL industry the ability to confidently pursue a BPL
installation," says Terrence Burns, Chair of the Broadband over Power
Line Standards Working Group, which developed IEEE 1675. "It provides
for the protection of and safe operation by utilities personnel, as well
as the safety of non-utility workers."IEEE 1675 was sponsored by the
Power System Communications Committee of the IEEE Power Engineering Society.
What this means is that the IEEE 1675 standard apply to the last part of
the mains circuit, after all transformers.
There is also IEEE 643 a "Guide for Power-Line Carrier Applications" a
standard for communication over the transmission line network (above 69kV).
Note this only applies to the transmission line above 69kV.
There is no standard that applies to the whole system from transmission
line to home socket. The 1675 standard applies to the "last mile". There
is quite a gap between the
transmission line network and the last mile.
The trials may work but they don't demonstrate a workable system, only a
brd at iimetro.com.au
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