I read through draft-2 and your other submission to FERC, and reviewed
the
meeting notes. Here are some comments/questions I still have that
hopefully will produce clarifications that will be helpful to others as
well:
- Footnote 2 (page 1):
Is the Interval in that first example 1 hour (will deliver 1
kW/hour)? Or is the Interval 24 hours?
- General: You say this model
reduces the need for ancillary services.
Does that include services related to quality/reliability?
- Line 88: you mention that collateral is 'beyond scope', but then say
that
collateral is 'a critical element of the TEM'. That seems a bit
contradictory. If it's critical, where/how would collateral
information
be captured/communicated if not in scope for EI/EMIX?
- Table 1:
-- Extended Price:
There is 'Interval' and 'Rate of Delivery', but when I try to
construct an equation I find I'm missing a variable for the right-hand
side
that has $ as a unit. Wouldn't it be the sum of all the Price * Rate *
Interval, ie. ($/unit * unit/time * time)? If so, then should the
description
include a reference to 'Price'?
-- Extended Price, 'average':
The description of 'average' price uses the term 'duration of the
Interval' as opposed to simply 'Interval'. If an 'Interval' is an
hour, how is 'duration of the Interval' different?
- Table 2:
-- If in practice the 'Offer' comes before the 'Transaction', perhaps
put Table
2 first, Table 1 second?
-- 'Rate of Delivery': here again, 'duration of the Interval' might be
redundant and could just say 'Interval'? As I understood it,
Interval is already a duration of time. And a contract would be a
series
of Intervals (for a specified duration ;))? This may be a general
terminology issue since we haven't really settled on or clearly defined
that
terminology in EMIX yet.
- Tables 1 and 2: Is 'Interval' an offset from a start time, or is it
specified
as real time (as in UTC)?
- Tables 3 and 4: Why do these models specify a 'Maximum'
Rate of
Delivery, but the other two info models (Tables 1 and 2) simply the
'Rate of
Delivery'?
Thanks for any time you might be able to give to these questions.
Best Regards,
Anne
ed@cazalet.com
wrote:
The document revision named Transactional Energy Elements DRAFT - 2.pdf has
been submitted by Edward Cazalet to the OASIS Energy Market Information
Exchange (eMIX) TC document repository. This document is revision #1 of
Transactional Energy Elements.pdf.
Document Description:
This document was recently submitted to Energy Interop to support
transactional energy. Transactional energy uses simple price/quantity
offers and transactions among the parties to achieve coordinated economic
operation of the grid.
I am also submitting this document to EMIX as an example (use case) for our
EMIX Information Model.
I have used the current EMIX Information Model as much as possible, but
made some modifications I found necessary or useful. We may want to take
some of these into the EMIX Information model.
The transactional information model in this paper provides a basic
information model for retail dynamic pricing, and wholesale trading.
Energy transactions at any level of interval detail ( years, months, days,
hours, minutes or seconds ) can be supported. Call and put options are
supported both as hedging options for retail and wholesale transactions as
well as for ancillary service and capacity products. I think the elements
could also be part of transactions with Independent System Operator
markets.
View Document Details:
http://www.oasis-open.org/committees/document.php?document_id=37145
Download Document:
http://www.oasis-open.org/committees/download.php/37145/Transactional%20Energy%20Elements%20DRAFT%20-%202.pdf
Revision:
This document is revision #1 of Transactional Energy Elements.pdf. The
document details page referenced above will show the complete revision
history.
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