OASIS Energy Market Information Exchange (eMIX) TC

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  • 1.  Quality Product

    Posted 05-13-2010 09:41

    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
    Phone: (919)962-9073

    http://www.oasis-open.org

    blog: www.NewDaedalus.com



  • 2.  RE: Quality Product

    Posted 05-13-2010 13:26
    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


  • 3.  RE: Quality Product

    Posted 05-13-2010 13:35
    Yes they do. And I hope they will contribute their SRS to EMIX after their
    meeting on Friday.