Definition of a "Price Interval"

This came up during last
week's eMIX TC meeting -- What is the definition of price interval?
What elements/attributes are comprised in it?


For any price, there should be a standard "Time" factor associated with
it (unless the exception is there is "one" price for all periods).




I think we should make a key distinction of price schedule versus the
interval (if we ever can) and how the generic price intervals are
different from their definition in DR signals (the notion of DR
events).


Let's say for example, a price-responsive DR event in OpenADR may look
something like this (I am not saying this is how eMIX should address it
as the goal of sending the information and subsequent response may
differ) --


       
<p:drEventData>

          
<p:notificationTime>2010-02-08T15:17:21.000-08:00</p:notificationTime>

           
<p:startTime>2010-02-09T00:00:00.000-08:00</p:startTime>

           
<p:endTime>2010-02-09T23:59:59.000-08:00</p:endTime>

            <p:eventInfoInstances>

               
<p:eventInfoTypeID>PRICE_ABSOLUTE</p:eventInfoTypeID>

                <p:eventInfoName>price</p:eventInfoName>

                <p:eventInfoValues>

                    <p:value>0.03638841</p:value>

                    <p:timeOffset>0</p:timeOffset>

                </p:eventInfoValues>

        </p:eventInfoInstances>

        </p:drEventData>


What you see above is a definition of time slot (start and end time)
that has various attributes associated with it. Other attributes could
be for example, load shed, % shed, etc. However, all of these
attributes are associated with one time-slot notion, which is defined
by the period of DR event.


Thank you,

RIsh



--


  
    
      
Rish Ghatikar

Lawrence Berkeley National Laboratory

1 Cyclotron Road, MS: 90-3111, Berkeley, CA 94720

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