RE: Quality Product

["Toby Considine" <Toby.Considine@gmail.com>]

Yes they do. And I hope they will contribute their SRS to EMIX after their
meeting on Friday. <sigh />

But that is half the story.

We can use those metrics to describe load in the past tense. 
We can have quite good off-line contracts specifying penalties and
acceptable quality and ...
I am wondering how we get it in a format that low quality can be priced
differently, and that different kinds of quality problems can move through
the market...


As I understand the Distribution problem with DER, much of the power sold by
the household back to the grid is poor quality. Out of phase is a frequent
problem, and one the Utility has to correct.  Meanwhile the solar installer
gripes about monopolies being reluctant to take their power. With correct
pricing distinction, the DER resource would see the incentives to fix the
problem; with transparency, the supplier would know why the price was
less...



"If something is not worth doing, it`s not worth doing well" - Peter Drucker

Toby Considine
TC9, Inc
OASIS Technical Advisory Board
TC Chair: oBIX & WS-Calendar
TC Editor: EMIX, EnergyInterop

  
Email: Toby.Considine@gmail.com
Phone: (919)619-2104
http://www.tcnine.com/
blog: www.NewDaedalus.com



-----Original Message-----
From: Holmberg, David [mailto:david.holmberg@nist.gov] 
Sent: Thursday, May 13, 2010 9:25 AM
To: Considine, Toby (Campus Services IT); emix@lists.oasis-open.org
Subject: RE: Quality Product

EIS-A SRS has a section on quality with some parameters. 

This information is based upon power quality events defined within IEEE
1159-2009. A
298 Service Level Agreement (SLA) between a and an electrical energy
provider should be
299 based on an agreed upon number of transients, sags, voltage
fluctuations, voltage dips
300 and interruptions, voltage imbalances, power-frequency variations,
induced low
301 frequency voltages, and CD in AC networks events defined in the IEEE
1159 standard. 
302 A placeholder was added to this information to indicate Quality of
Service (QOS), similar
303 to the Availability found in telephony/data systems. In the future we
expect the industry
304 to create a metric that defines--"good power", power availability, or
Quality of Service. 
305 The Power Quality information exchanged across the ESI is defined in
Table 2.1. 
306 

Properties                              Data Types            Units

Transients / Billing Period       ULong                    n/a
Sags / Billing Period                ULong                   n/a
Swells / Billing Period              ULong                   n/a
Interruptions / Billing Period   ULong                  n/a
Voltage Imbalances / Billing Period    ULong      n/a
power frequency variations / Billing Period   ULong   n/a
Others (See IEEE-1159) / Billing Period    ULong   n/a
Quality of Service             PerCent                 %   
Table 2.1 Power Quality Information
________________________________________
From: Considine, Toby (Campus Services IT) [Toby.Considine@unc.edu]
Sent: Thursday, May 13, 2010 5:40 AM
To: emix@lists.oasis-open.org
Subject: [emix] Quality Product

Where does quality fit in Emix?

For sake of conversation
Restrict Emix to simple Load
Leave out the performance classes for a moment Don’t worry about DR.

Now we have a simple purchase of 1 KWh of 120 volt 3 phase 60 Hz A/C for one
hour.

-          I can offer it

-          I can buy it

-          I can get it

-          My meter can record it

If the voltage sags for five minutes in the middle has it been delivered or
not? How about 45 minutes?
If it is out of phase has it been delivered or not? How much has it been out
of phase?
Is a closure event failure to deliver?

The answer is of course “It Depends”
Or the long form, “It Depends on what’s in the contract”
But how do we specify the quality for the contract…

tc




________________________________
"If something is not worth doing, it`s not worth doing well"
Peter Drucker
________________________________
Toby Considine
Chair, OASIS oBIX Technical Committee
Co-Chair, OASIS Technical Advisory Board 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