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http://nodal.ercot.com 1Lead from the front
Texas Nodal
������������� ��ERCOT Update
Curtis Crews, P.E., ’95
Engineering Supervisor
ERCOT Network Model Group
512-248-3139
http://nodal.ercot.com 3Lead from the front
Texas Nodal
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Definitions of ERCOT
• Regional Reliability Council within NERC• Independent System Operator (grid operator) with multiple roles:
–Responsible for grid operations and reliability–Administrator of the wholesale power market (deregulated 1996)–Administrator of the retail electric market (restructured 2002)–Supervising entity for transmission planning–Administrator of the Renewable Energy Credit program for the State of Texas (2002)
• A term frequently used to describe the collaborative stakeholderprocess for developing protocols & guides
http://nodal.ercot.com 4Lead from the front
Texas Nodal
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“ERCOT’s Mission is to direct and ensure reliable and cost-effective operation of the electric grid and to enable fair and efficient market-driven solutions to meet customers’ electric service needs.”
http://nodal.ercot.com 5Lead from the front
Texas Nodal
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At ERCOT electric reliability is the primary focus. ERCOT staff understands the importance of safe, reliable, and affordable electric service in the daily lives of Texans.
For the benefit of Texas, ERCOT will» Operate the high-voltage electric grid
reliably, efficiently, and securely» Provide open and non-discriminatory
access to electric transmission services and the competitive electricity market
» Enable robust and efficient wholesale and retail electricity markets
http://nodal.ercot.com 6Lead from the front
Texas Nodal
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• ERCOT grid covers 75% of Texas and serves 85% of Texas load
• 38,000 miles of Transmission Lines–Nearly 700 miles of 345 kV lines added since 1999
• 70,000 MW of total resources* • 26,000 MW of new generation capacity added since 1998• 63,056 MW Peak Load (August 17, 2006 unofficial)• ERCOT is a non-profit corporation regulated by the Public Utility
Commission of Texas and subject to oversight by the Texas Legislature.
http://nodal.ercot.com 8Lead from the front
Texas Nodal
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Project began in 2003 with plans to:1. Reduce personnel hours.2. Improve accuracy checks of data.3. Improve consistency between the Planning model and the
Operations model.4. Improve data exchange interface between ERCOT and
Transmission Operators.5. Improve audit trail metrics.6. Automate one-line generation from the model database.
http://nodal.ercot.com 9Lead from the front
Texas Nodal
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Re-directed project in late 2005 to ensure compliance with Nodal Protocol requirements.
Modeling Challenges in Nodal Protocol:1. Model timeline (more forward looking)2. Information posting 3. Name consistency between models (different platforms)4. CRR Model and auction data requirements
http://nodal.ercot.com 10Lead from the front
Texas Nodal
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• NMMS general concept was to have an easily audited single location for Operations and Planning Models data to reside and drive future models. Easy, right?
• Political challenge ensued and will be ignored for the remainder of this presentation.
• Technical challenge(s) presented and are being addressed.
http://nodal.ercot.com 12Lead from the front
Texas Nodal
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“ERCOT’s rigorous selection criteria, consistent with the Nodal Charter, require vendor offerings to align with ERCOT’s focused technology footprint, and select only proven software solutions that are capable of minimizing bugs and integration risk,” said Nodal Program Director Kathy Hager. “The preferred vendor teams consist of exemplary individuals who bring to ERCOT a commitment to excellence in project management and a proven track record of delivery and results.”
http://nodal.ercot.com 13Lead from the front
Texas Nodal
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Zonal Market• Insufficient price transparency • Resources grouped by portfolio • Indirect assignment of local congestion
Nodal Market• Improved price signals • Improved dispatch efficiencies • Direct assignment of local congestion
http://nodal.ercot.com 14Lead from the front
Texas Nodal
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• The transition to the nodal market will require significant changes to processes and systems. (5 Congestion Management Zones (CMZs) defined by Commercially Significant Constraints (CSCs) changing to a nodal design satisfying the PUCT order to directlyassign local congestion.) The nodal market grid will consist of more than 4,000 nodes, replacing today’s CMZs. The major components that will impact ERCOT’s current business model include the following:– Day-ahead market (DAM) – Reliability unit commitment (RUC) – Real-time or security constrained economic dispatch (SCED) – Congestion revenue rights (CRRs)
ALL have heavy dependence on an accurate model!
http://nodal.ercot.com 15Lead from the front
Texas Nodal
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EMS
Early Delivery Systems
MMS
CRR
MIS
NMMS
Commercial Systems
ERCOT & MP Readiness
Q2 2008 Q3 2009Q4 2008Q3 2008Q2 2007Q1 2007Q4 2006 Q4 2007Q3 2007 Q1 2008Q3 2006 Q1 2009
Outage Scheduler
EDW
“UI in production”
Q2 2009
Qualification Freeze
EDS 3 (TXMACS 0.3)SCED; MP SCED Offers
EDS 4 TXMACS 0.4)
with selected MPsEDS 5 (TXMACS 0.5)
MMS FAT MMS SAT
CRR Design, Build, Pre-FAT CRR FAT CRR SAT
Final MP Interface
Specs 3/31
MP Registration complete
MIS FAT MIS SAT
168 hour market trial
FAT SATNaming Convention; Requirements, Concept Design CIM-compliant Model (flat file)
FAT SATNMMS User Interface & business processes
Zonal Genesys Operational
Common model update process
NODAL GO LIVE
MIS (EMS/MMS/CRR) Design, Build, Pre-FAT
EDW FAT EDW SAT
StatementsLayout
Script test Credit Monitoring
End of Trials
MP Nodal Registration MP Financial & Operational Qualification
EMS SATEMS EMS FATEMS Requirements, Conceptual Design
MIS SATMIS (SCED) Design, Build, Pre-FAT MIS FAT
MMS Design, Build, Pre-FATMMS Requirements, Conceptual Design
OS SATOS Build OS FATOS Requirements, Conceptual Design
CRR Requirements, Conceptual Design
Commercial Systems Design, Build, Pre-FAT CS FAT CS SAT
EDW Requirements, Conceptual Design
SCED SATSCED Build SCED FATSCED Requirements, Conceptual Design
Registration ready
MPSCED Offers
Business Requirements
complete 10/30
Preliminary MP Interface Specs 12/31
CS FAT CS SAT
EDW FAT EDW SAT EDW FAT EDW SAT
CS Requirements, Conceptual Design
EDW Design, Build, Pre-FAT
MIS FAT MIS SAT
Begin MP trial participation
“Non-binding settlements”
Financial Transfer
CS FAT CS SAT
EDS 4 MP SAT
TXMACS 1.0Live
operations
MIS FAT MIS SAT
“CRR Auction for Go Live”
Vendors will share detailed design documents with other vendors for interface definitions
Vendors selection will be done by Mid-June
TPTF will hold review meetings as required for approval of requirements and conceptual design documents
All systems have to conform with the integrated Data Dictionary
Areva’s EMS will handle CIM models
ERCOT would need 6 months of integration testing on applications such as MMS, CRR and NMMS
To satisfy section 17.3 of the Nodal protocols, ERCOT will deploy COGNOS and SAS to provide PUCT with the ability to generate reports
To allow for interface definitions, detailed design documents of individual projects can be completed 80 hours after one another. The order of completion will be NMMS – MMS/EMS/SE – CRR/Outage Schedule –Commercial Systems – MIS/EDW
The current State Estimator will meet the necessary criteria
TDSPs will be trained on new NMMS and there will dual entry of models – into the new NMMS and into GENESYS. ERCOT will have enough staff to handle this work
Assumptions affecting the critical path
Vendors will share detailed design documents with other vendors for interface definitions
Vendors selection will be done by Mid-June
TPTF will hold review meetings as required for approval of requirements and conceptual design documents
All systems have to conform with the integrated Data Dictionary
Areva’s EMS will handle CIM models
ERCOT would need 6 months of integration testing on applications such as MMS, CRR and NMMS
To satisfy section 17.3 of the Nodal protocols, ERCOT will deploy COGNOS and SAS to provide PUCT with the ability to generate reports
To allow for interface definitions, detailed design documents of individual projects can be completed 80 hours after one another. The order of completion will be NMMS – MMS/EMS/SE – CRR/Outage Schedule –Commercial Systems – MIS/EDW
The current State Estimator will meet the necessary criteria
TDSPs will be trained on new NMMS and there will dual entry of models – into the new NMMS and into GENESYS. ERCOT will have enough staff to handle this work
Assumptions affecting the critical pathOTS SAT
OTS FAT
OTS SAT
OTS FAT
EDS 3 Data Validation
CIM
http://nodal.ercot.com 16Lead from the front
Texas Nodal
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Why CIM?????• AREVA T&D, Inc. will remain the provider of the Energy Management
System and Load Forecast. (EMP2.2 to 2.4 and Habitat 5.4 to 5.6)• Siemens Power Transmission & Distribution Inc. Energy Management &
Automation Division (NMMS)• ABB, Inc. PSN/Power Systems Division (Market Operations and Outage
Scheduler)• Nexant, Inc. Energy Solutions Division (CRR, Network Modeling and
Telemetry)• ROME Corporation (Credit Monitoring)• AWS Truwind, LLC, (RPP forecast)
This is the initial list of preferred vendors. Finalized selection is pending.
• CIM Version 10 Revision 7 Release Candidate selected as baseline
http://nodal.ercot.com 18Lead from the front
Texas Nodal
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NMMS
Initial Load From EMS
NOMCR –CIM/XML
PMCR –Idevs
NOMCR – CSV Outages
MMS –CPSM + specified CIM extensions
EMS –CIM/XML or CSV-Network, SCADA, & Gen
MIS –CIM/XMLCPSM + Increments
OS -CIM/XMLList of Equip + connectivity
CRR –RAWD-Network + Settle-ment Points
Planning –RAWD-Network
LodeStar –settlement data
http://nodal.ercot.com 19Lead from the front
Texas Nodal
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After today’spresentation,you are here
This is therest of theERCOTMarket