RE: [energyinterop] Energy Usage Feedback

["Old, Bob (SBT US)" <bob.old@siemens.com>]

Interval Meters have been around as long as I can remember, so I don't expect this sort of information is going away anytime soon.  These Interval Meters are common in our customers' buildings.  My understanding (from SCE) is if you need more that 200 kw, you are not classified as residential and you automatically get an Interval Meter.  Interval Meters provide a Building Automation System with dry contact closures at a rate up to 10 Hz, which indicate the current demand through the meter.  These pulses are counted (one edge, or both rising and falling edges) and multiplied by a constant provided by the Utility.  All the BAS vendors have Peak Demand Shaving applications, it's table-stakes in our market.  Our PDS application attempts to shed pre-determined loads for specific periods, taking into account loads' priorities and other related aspects.  It is common for Utilities to charge a customer for another 11 months if they use more than their current largest demand during a 15 minute interval.  The Utility needs to have a large enough transformer to cover the peak demand.
 
I need this sort of information, demand, with this sort of latency, 15 minute intervals.  I get it now--I would hate to go backwards.
 
Meters have a lot of other information, and I can think of some good uses for ALL that information, for each 15 minute interval (better a 5 minute interval.) and certainly once a day, preferably hour by hour.  This much larger amount of information seems like a perfect application for Energy Interop.
 
Best,
B.O.  August 27, 2009
--
Robert Old, System Architecture, bob.old@siemens.com
Siemens Building Technologies, Inc., HVAC Products
1000 Deerfield Pkwy., Buffalo Grove, IL 60089-4513  USA
Phone: +1(847)941-5623, Skype: bobold2


________________________________

From: Considine, Toby (Campus Services IT) [mailto:Toby.Considine@unc.edu]
Sent: Tue 8/25/2009 9:35 PM
To: 'energyinterop@lists.oasis-open.org'
Subject: [energyinterop] Energy Usage Feedback



One of the other priorities under the smart grid is feedback to the premises EMS on actual energy use. 

 

The actual efforts to solve this problem seem, to date, to be inward focused, i.e., how can we collect this info and send it back through our substations to our CRMs. Personally, I think that something that looks like an oBIX watchpoint, or an oBIX Trend Report internal to the building makes a lot more sense. 

 

But if it must go back to the utility CRM, should Energy Interoperation include an interaction to delver it back to the building? What if it is not available for delivery until the next day? (The UCAIug calls this "near real time")

 

tc

 

________________________________

"When one door closes, another opens; but we often look so long and so regretfully upon the closed door that we do not see the one which has opened for us." -- Alexander Graham Bell

________________________________

Toby Considine

Chair, OASIS oBIX Technical Committee
OASIS Technical Advisory Board
OASIS Energy Interoperation TC
Facilities Technology Office
University of North Carolina
Chapel Hill, NC

  

Email: Toby.Considine@ unc.edu <mailto:Toby.Considine@fac.unc.edu> 
Phone: (919)962-9073 

http://www.oasis-open.org 

blog: www.NewDaedalus.com