*CINCINNATI -- About 18,000 Duke Energy customers
participating in an energy-saving program saved more energy than expected on
The customers are part of the Power Manager program that
installs a box on air conditioning units that cycles the cooling system off for
a few minutes during peak usage times. But Monday night, an incorrect
signal was sent to the boxes, a Duke Energy spokeswoman said. Instead of
cycling, the boxes shut down the units for three hours. The utility said
it had never had a problem like it before and said human error was to blame.
All units were back in operation by 8:30 p.m.*
This type of incident can easily be repeated as more and
more utilities attempt to remotely control their customers’ air
conditioning. The purpose is to reduce load demand during peak usage
periods by raising the air conditioners setpoints to prevent rolling brownouts.
The concern is if, by either intentional or unintentional reasons, the
setpoints are lowered rather than raised. In that case, instead of preventing
rolling brownouts, you can cause blackouts.
Original Message -----
Sent: Tuesday, August 11,
2009 7:23 AM
Report coming out of Smart Grid SDO Conference
I prepared the attached schedule as a summary of issues most
relevant to the Energy Interoperability TC coming out of the Smart Grid SDO
Conference on August 3-4. I am sharing it with these lists, with the note that
while it is OASIS-centric, it does clarify the path to information exchanges
necessary to get the smart load the smart grid needs.
(translation note: EMIX = Energy Market Information Exchange
TC, now in formation)
High Level overview:
WS-Calendar will be done by year end, to be used as a
component in Price and in Energy Interoperability. We can use place-holders
EMIX, now in formation, is due out for review in April 2010.
EMIX will itself consume WS-Calendar. EMIX (Price/Product) is critical to
almost every Energy Interoperation – we will have to use placeholders
NIST will unveil the Smart Grid Roadmap, based upon the EPRI
work, at GridWeek in September.
Numerous groups are working on the common semantics, use
cases for Price, Product, DR, and DER. These groups are due to complete their
work in October, for report-out at GridInterop in November. These reports will
be donated to Energy Interoperation and to EMIX.
Issues from the Workshop
Prices and Pricing. These words created a lot of
discord. Dynamic pricing is an appropriate goal for Energy
Interoperation. Pricing is not. Pricing, to many, refers to algorithms as to
how a price is computed. This conflict of terms caused much dissension,
discussion until we recognized the issue. EMIX communicates Prices, not
Product Attributes. Mike Oldak brought one half of the room
around when he declared that Product Attributes are better referred to as Terms
and Conditions. This is probably a good lens to look at this issue with
Also from Mike Oldak
There are three kinds of DR:
Pure prices, and you can do what you want
Contracted Response, in which the end node responds as
per contract when signaled
Committee notes and Directions
Energy Interoperation includes DR and DER. DR and DER blur
in the middle: turning something off or running on stored energy have the same
effect on the grid load. The Committee Draft 1 for Energy Interoperation would
benefit from the clarity of this summary.
In terms of grid interactions with the end nodes, there is
another fast track initiative on sharing customer energy usage with the end
node and delegable to third parties. This standard, current with the overly
general name ADE (Automated Data Exchange) can present one of the longest
requested sources of information to the building and home automation market.
The Energy Interoperation Committee may want to create a
subcommittee to prepare white papers on Energy Interoperation and the many
standards. Such a white paper could revise and extend the narrative portions of
the CEC OpenADR specification, and create models defining communications
between end nodes and the grid. EMIX to understand what’s on the market,
Energy Interoperability to negotiate price and response with the grid, and [son
of ADE] to act as the feedback/regulator.
"You can cut all the
flowers but you cannot keep spring from coming."
Chair, OASIS oBIX Technical Committee
OASIS Energy Interopreration TC
OASIS Technical Advisory
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