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Visibility

Visibility. 10/1/2007. Agenda. Visibility Overview Status WECC ColumbiaGrid Issues Preliminary Thoughts Regarding Conclusions and Recommendations Next Steps. Visibility Overview. Model Area. Actual WECC System. Future Model. WECC Planning Model. SE Model. WECC substations

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Visibility

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  1. Visibility 10/1/2007

  2. Agenda • Visibility Overview • Status • WECC • ColumbiaGrid • Issues • Preliminary Thoughts Regarding Conclusions and Recommendations • Next Steps 2

  3. Visibility Overview

  4. Model Area Actual WECC System Future Model WECC Planning Model SE Model WECC substations Not in WECC planning model Network equivalence Model Area 4

  5. WSM Project 5

  6. Stage 1 – Operational Network Model RMRC (WAPA) PNSC (BPA) CMRC (PG&E) WECC Merged Operational Model Network Validation Power Flow Online Display 6

  7. Stage 2 – SCADA & SE WECC Operational Network Model State Estimator System WECC SCADA Model SCADA System WECC ICCP Model ICCP System WECC WON 7

  8. Stage 3 – WECC Customization • State Estimator Customs • Remedial Action Schemes • PowerTech Applications • TSAT – Transient Stability • VSAT – Voltage Stability 8

  9. System Model Objective • WSM is the heart for system reliability. It will be used for estimating the system states and evaluating the system reliability. • WSM is also going to be used for operation and system planning studies. • Model needs to be accurate as much as possible. Most of the variance currently present need to be cleaned up. • Proper tools, methodology, process and resources need to be identified to maintain the quality and accuracy of the model. Results will be as good as the model 9

  10. WSM Possible Users • WSM Provides Common Network Model for • Reliability Entities (RE) • Planning Entities (PEs) • Reliability Coordinators (RCs) • Balancing Authorities (BAs) • Planning Authorities • Transmission Operators • Resource Planners • Standards Developers 10

  11. Q4 2006 Q1 2007 Q2 2007 Q3 2007 Q4 2007 Q1 2008 Q2 2008 Status – WECC Schedule Stage 3 • Phase 1 – 1st Qtr 2008 (est 4th Qtr 2008) • Phase 2 – est. 2009 (????) • Phase 3 – est. 2010 (????) Stage 2 Stage 1 Stage 1 11

  12. Status – ColumbiaGrid Activities • Signed - Development and Staffing Reliability Functional Agreement • Appointed Norm, Darrell, Ramu to support these activities 12

  13. Overview of Agreement - Visibility Enhancements • CG will assist in Western Interconnection-wide and region-wide efforts to enhance the visibility for • Reliability Coordinators • Transmission Operators/Owners • Assist WECC’s in the development, testing, implementation and maintenance of • West-wide Model • Similar tools • Recommend to Reliability Parties regarding workable Visibility tools for their respective Transmission Systems and the Regional Interconnected System. • Deliverables • Establish presence in certain reliability forums • Gain experience and knowledge • Develop recommendations regarding future actions of parties, including potential roles for ColumbiaGrid • Publish interim recommendation (Date ??/??/??) 13

  14. Visibility Enhancements Issues……. • We need to identify approaches for following issues • Currently there is a clear plan how WSM is going to be used by WECC but not by members. • 3 different bus names (Need cross reference) • West Wide Model • Operation • Planning • Utilities need to come up with a method to synchronize their model with West Wide Model on the ongoing basis (Planning and operation) • Need to merge the model below 100 KV and validate • Additional tools are required to develop a planning model from the network model. • Model differences in operation and planning (Multi section lines, transformers, DC lines……….) • Currently data maintenance process between planning and operation has lot of gaps. • Few members are performing operation studies. Others need to perform operation studies based on current operating conditions to optimize the system and meet system reliability. (Next hour, next day and week) • Bus and node orient model issues • Need to identify the software licenses provided by AREVA for CG members 14

  15. Visibility Enhancements Issues……. (Cont.,) • Equipment Model Issues & variables • Modeling methods are not consistence • Generators (Hydro, Thermal, Water level, temperature…..) • MW limits • MVAR limits • Transformers (Tap, impedance, model…) • Line data • Line connected shunts • Multi section lines • Shunts (Value, Base KV, no of shunts, location) • DC Line modeling • Load • Sub transmission modeling & Equivalent model • Data quality need to be validated 15

  16. Preliminary Thoughts regarding Conclusions and Recommendations

  17. Visibility Enhancements West-wide Model Initial Development BPA CAISO Validate Merged WSM 100 KV and above Initial WSM WAPA 17

  18. Visibility Enhancements West-wide Model Maintenance WECC Validate Online Model New Model Every 2 weeks Update To Current Model 18

  19. Visibility Enhancements West-wide Model - Planning Dump Process CIM/GE/PTI WSM Add Lower KV model Validate Add Future Equipments Validate Planning Model 19

  20. Next Steps • Identify how GC members can use the WSM model – Identify gaps • Identify the process to cleanup, test and maintain the WSM • Establish presence in certain reliability forums • GC Gain experience and knowledge • Develop recommendations regarding future actions of parties, including potential roles for ColumbiaGrid • Publish interim recommendation 20

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