1. RPEWG Present and Future Activities Boise, August 17, 2011 RPEWG Meeting 1

2. 2 OUTLINE 1. RPEWG - History 2. RPEWG – Membership, Scope of Work & Documents 3. Performance Level Adjustment Projects 4. TRD Outage Data Collection Scheme 5. WECC Annual Outage Data Reports 6. Actions Items & Future Work 2

3. 3 1. RPEWG History RPEWG was formed in ?? (reported to PCC until 2005 and since then to RS) PMWG was formed as a RS Working Group in June 1996. Completed work on PBRC development framework and Phase I Implementation Plan. In 1998 PCC approved the PBRC development framework and Phase I Implementation Plan. RPEWG was actively involved and helped PMWG work on PBRC. TRD TF was formed as a sub-group of RS in 2005. Completed work on TRD database in 2006. RPEWG has started to play new role as result of new NERC Reliability standards and WECC Reliability Criteria as well as the creation of a new WECC outage data system TRD. RPEWG was merged with TRD in 2006. RPEWG past Chairs: James Leigh-Kendall (SMUD), John Leland (NWE), Brian Keel (SRP) 3

4. 4 2. RPEWG – Membership Roster Bajarang Agrawal, APS Jeff Billinton, AESO Heide Caswell, Pacific Corp. Donald Davis, WECC Marv Landauer, Columbia Grid Wen Yuan Li, BC Hydro Milorad Papic (new Chair), Idaho Power Vishal Patel, SCE Tino Quintanilla, SRP Doug Ticker, WECC Sheldon Yan, BC Hydro Chuck Matthews, BPA 4

5. 5 2. RPEWG – Summary of Work Develops processes to implement probabilistic-based reliability criteria Reviews requests for performance category adjustments Monitors facility outage data and recommends category adjustments Maintains the Performance Level Adjustment Record Define facility outage data reporting requirements and making recommendations to the RS on reliability performance level. 5

6. 6 2. RPEWG Documentation RPEWG Charter (April, 2010) Membership Guidelines (June, 2002) RPEWG Functional Guidelines (February 2002) Phase I Probabilistic Based Reliability Criteria (October 1997) Robust Line Design Features (December, 2003) Seven Step Process for Performance Category Upgrade Request (October, 2004) RPEWG - Evaluation of Exceptions List Facilities (February 2001) Performance Category Evaluation Project Reports, Presentations Performance Level Adjustment Record Annual Reports 2006-2009 Presentations (Webinars on TADS/ TRD), 2008-2010 TRD & TADS Users Guide, update October 2010 6

7. 7 2. RPEWG – Seven Step Process

8. 8 3. Performance Level Adjustment Projects 8

9. 9 TRD Transmission Reliability Data Standard Statistical Reports Performance Reports Customized Reports 4. TRD COLLECTION SCHEME.... Utility 1 Utility 2 Utility 3 Utility n NERC TADS 9

10. 10 4. NERC TADS & WECC TRD TO Submits Data to WECC WECC WECC REVIEW TOs DATA Check TO Data Assign Event ID Codes for Events affecting more than one TO NERC NERC REVIEW WECC DATA Check WECC and other RE Data Assign Event ID Codes for Events affecting more than one RE Fills in missing data on whether an outage triggered a disturbance report WECC submit reviewed TADS data to NERC 10

11. 11 4. TRD outage database collection Provides a common format for outage data submittal to WECC and NERC Provides a transmission outage database for transmission line performance upgrade requests Provides a database to monitor, evaluate and report WECC transmission lines & transformers performance Provides pool of reliable outage statistics to assess impact of various variables such as: environmental conditions, equipment type, voltage class, age etc). Enables Benchmark data with other data sources (NERC, CEA, SGS, Companies database, etc.)

12. 12 5. WECC Annual Outage Data Reports Second Annual WECC Transmission Reliability Data Report, October 15, 2008 Third Annual WECC Transmission Reliability Data Report, October 15, 2009 1999-2008 500-kV WECC Transmission Reliability Data Report, January 19, 2010 Fourth Annual WECC Transmission Reliability Data Report, July 8, 2010 WECC TRD Common Corridor and Tower Data, October 26, 2010 Fifth Annual WECC Transmission Reliability Data Report, May 17, 2011 (under review) 12

13. 13 6. Future Work Continue make reviews requests for performance category adjustments Continue monitor facility outage data and recommend category adjustments Continue maintain the Performance Level Adjustment Record Define facility outage data reporting requirements and make recommendations to the RS on reliability performance level. Continue help WECC staff in publishing annual transmission outage data reports and present results to the Reliability Subcommittee. Coordinate activities among WECC TRD and NERC TADS outage data collection systems 13

14. 14 Questions