CRR Network Model One-Line Diagram Beth Garza TPTF April 22, 2008.

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Presentation transcript:

CRR Network Model One-Line Diagram Beth Garza TPTF April 22, 2008

TPTF / CRR Network Model one-line diagram2 Nodal Protocols CRR Network Model (1)ERCOT shall develop models for CRR auctions that contain, as much as practicable, information consistent with the Network Operations Model. Names of Transmission Elements in the Network Operations Model and the CRR Network Model must be identical for the same physical equipment. (2)ERCOT shall verify that the names of Hub Buses and Electrical Buses used to describe the same device in any Hub are identically named in both the Network Operations Model and the CRR Network Model. (3)Each CRR Network Model must include: (a) A complete one-line diagram with all Settlement Points (indicating the Settlement Point that the Electrical Bus is a part of) and including all Hub Buses used to calculate Hub prices (if applicable); (b)Generation Resource locations; (c)Transmission Elements; (d)Transmission impedances; (e)Transmission ratings; (f)Contingency lists; (g)Data inputs used in the calculation of Dynamic Ratings, and (h)Other relevant assumptions and inputs used for the CRR Network Model. (4)ERCOT shall perform updates to CRR Network Model for CRR auctions as described in Section 7, Congestion Revenue Rights, a minimum of two months in advance. (5)ERCOT shall make available to TSPs and/or DSPs and all appropriate Market Participants, consistent with applicable policies regarding release of Critical Energy Infrastructure Information (CEII), the CRR Network Model. ERCOT shall provide model information through the use of the Electric Power Research Institute (EPRI) and NERC-sponsored “Common Information Model” and web based XML communications.

April 22, 2008TPTF / CRR Network Model one-line diagram3 Background ERCOT assumes this diagram is intended to be a geographical representation of transmission lines and generators. –System Planning maps, not substation level schematics ERCOT does not currently have scope for a system to provide a geographically reflective system ‘map’ from the bus/branch output from NMMS. ERCOT seeks input about how to meet the Nodal Protocol requirement to provide a complete one-line diagram of a CRR Network Model.

April 22, 2008TPTF / CRR Network Model one-line diagram4 Options Add scope to the Nodal program to include a system to provide the required one-line diagram. Delete the Nodal Protocol requirement to provide a diagram. Periodically provide a System Planning type map of the transmission system –Resource Node settlement points –Hub buses –Load zones