Frank HossEnergy & Utilities: From your perspective,
what is the intelligent grid?

Frank Hoss: The intelligent grid focuses
primarily on the efficient, reliable and safe
distribution of electricity. It’s the marriage of
the electrical distribution infrastructure, with
a communications infrastructure. That can
be in the form of a number of communication
protocols such as two-way radio frequency,
broadband over power line, power line carrier,
cellular or WiMax. It’s that combination that
makes the data – which was always available on
the distribution grid – more readily accessible
for operating, maintenance and planning decisions.
It also lets the utility run its distribution
operations in a much more autonomous, automated,
remote fashion.

E&U: What do you see as the catalyst behind
efforts to make the intelligent grid a reality?

FH: A number of events have made it possible
to focus on the intelligent grid and make it
feasible. Data from distribution grid devices
has always been available, but the problem has
been retrieving it and using it remotely on a
wide scale. The needed communications have
been prohibitively expensive up til now. Over
the last several years, communication technology
has developed rapidly, so bandwith and
wide-scale deployment are more economically
feasible now. And many utilities are experiencing
government or regulatory mandates to
implement smart metering, which requires a
very robust, wide-scale communications infrastructure.
So utilities now have a mechanism to
get communications in place affordably.

And to a large extent, the distribution grid
has been operated as a “black box,” with few
actual data points used in grid operations.

But with programs and initiatives like demand
response, dynamic pricing, distributed generation,
renewable and alternative energy sources,
islanding, smart homes, much more needs to
be known about the distribution grid to keep it
operating efficiently and safely. And because
It’s not uncommon for it to take 10 or 12 years
from concept to execution, efficient grid operations
are going to be instrumental in alleviating
either transmission congestion or the generation
capacity problems.

E&U: What are the main challenges utilities
face in making the intelligent grid a reality?

FH: The intelligent grid is going to be an evolution,
starting with mandated smart metering.
For utilities, it’s a huge investment, and they
want to get it right the first time. Communications
is a major part of that. Even with widescale
communication solutions becoming
affordable, it’s still changing quickly, and something
else even better may emerge in the near
future. One good example is WiMax. Now you
have several major telecommunications companies
that are investing billions of dollars in
WiMax over the next several years, which could
make it a preferred solution for utilities.
Also, when utilities are considering intelligent
grid solutions, what they’re implementing
today must position them for the operating and
regulatory environments of 15 to 20 years from
now. That’s why it’s so important that they do
it right the first time, so they can leverage what
they’re doing today for future implementations.

E&U: How do utilities ensure the intelligent
grid solutions they choose for today will be
current in the fast-paced technology development
cycle of the future?

FH: When we talk about intelligent grid
solutions, it’s multiple solutions that will
need to be implemented and integrated.
But any solution must meet three primary
conditions: 1) the solution must be
open, meaning there’s no proprietary
software or code involved, so the utility
can interface with that particular solution
without having to go back to the vendor;
2) the solution has to adhere to a standard
communication protocol, as being IPaddressable
or in line with the IEC 61850
requirements; and 3) the solution must be
scalable. When you talk about building the
intelligent grid over the entire distribution
infrastructure, you’re talking about having
to integrate multiple solutions. The more
they can scale, the better for the utility
in terms of both integration and maintenance
of those solutions going forward.

Finally, utilities must realize the intelligent
grid is an evolution that will take
years to implement. They need to make
sure that what they’re doing today will
prepare them for 15 to 20 years down
the road. And the intelligent grid is not
the same for every utility, because each
one has different drivers that will result
in different solutions. One good way for
the utility to prepare is to start examining
plausible scenarios, maybe in five-year
increments, within which they may find
themselves having to operate at some
point and determining how the company
must respond to be successful. And then
extend these scenarios to 15 or 20 years
out. Each solution should be a building
block or enabler for what they’re going
to need to do over the next five years.
It’s not a perfect crystal ball, but I think
adherence to those three primary solutions
and the use of plausible scenarios
can help the utility develop a realistic
intelligent grid road map.

E&U: Are there any additional challenges
facing a utility that needs to implement an
intelligent grid solution?

FH: I think another challenge is the sheer
magnitude of data that’s going to be available
from implementing intelligent grid
solutions. It’s going to require that the
utilities have an extremely robust data
management capability. Probably the
best way to show this is to talk through an
example. If you take a utility that’s looking
to deploy just 1 million smart meters, that’s
going to be equivalent to about 110 million
records on a daily basis. Of those 110 million,
96 million would be usage records,
with another 10 million records associated
with voltage readings, and then an estimate
of about 4 million records associated
with missed readings/rereads. Add to this,
some of the other programs and initiatives
that are going on in the industry;
for example, distributed generation. If 2
percent of your customers will have distributed
generation, that adds 4 million
records per day for the distributed generation
requirement. And then when you start
looking at load management and demand
side management, that could add up to
another 50 million records per day. So
when you examine this on an annual basis,
all those records represent a combined 59
terabytes of data, which is huge. The other
aspect is the timing of the data. Prior to
intelligent grid solutions, the need for the
frequency of the data ranged anywhere
from months down to days, and in some
cases, maybe hourly readings. With the
intelligent grid solutions operating the distribution
grid in a near-real-time fashion,
we’re now talking about milliseconds in
some cases. This is new territory for many
of the utilities and for the vendors that are
providing solutions – not only to be able to
acquire the data but to process it and provide
it as output to wherever it’s needed
within a-millisecond-or-less time frame.

E&U: What’s the justification for implementing
intelligent grid solutions?

FH: Whether it’s being mandated or
whether the programs or initiatives are
under way to make utilities much more
energy-efficient, intelligent grid solutions
will have to be deployed. Utilities are challenged
to provide a business case any
time they spend money, not only internally
but a justification that will stand up to the
scrutiny of regulators as well as customers
and stockholders. As far as intelligent
grid solutions, whether it be smart metering
as the starting point or other solutions,
utilities have to leverage whatever
piece they’re currently considering to
its maximum value within the company.
For example, if you’re installing smart
metering primarily for automated meterreading
capabilities, consider whether
you can also use that meter information
to identify outages. You’ll detect the outages
much sooner and do a much better
job of deploying field crews to make the
repairs. It would take a very small additional
investment to be able to leverage
initial smart metering capabilities to support
outage management like this, and the
utility would realize some very significant
benefits. There are a lot of opportunities
like that in these intelligent grid solutions.

E&U: How does the GridWise Alliance
support the intelligent grid efforts?

FH: The GridWise Alliance is an organization
that has been together about five
years. It is a collection of utilities as well
as vendors primarily focused on effecting
policy, legislation and regulations
within the utility industry, at federal and
state levels. We want to make sure that,
whether it’s the Department of Energy,
FERC, other regulatory bodies, or Congress
that they’re putting legislation out
there that advances the intelligent grid
and the deployment of energy-efficient
solutions. We’re also interested in having
various companies like DOE provide
the right type of research and programs
to make the intelligent grid solutions a
reality. We want to stay on top of those
drivers and mandates to ensure they’re
in line with where the distribution grid
needs to go.