1. WECC TRD/NERC TADS Webinar
September, 2009

2. WECC TRD and NERC TADS Brian Keel, Salt River Project
TRD and TADS Timelines
How TRD and TADS fit together
Review of Spreadsheets
Differences in TRD – TADS, attributes
Doug Tucker, WECC
Data Gathering Discussion & Results
WECC Data Handling

3. WECC Transmission Reliability Database
Started as sub group of the Reliability Subcommittee
Spring 2004
WECC PCC - OC 2005, re-tool for attributes
Formed TRDTF Fall 2005
WECC PCC, OC and Board approved Fall of 2006
Purposes of TRD:
WECC PCC Goal
WECC PCC and OC presentations over 2005
Completed with added physical attributes

4. WECC Transmission Reliability Database
Purpose of the TRD Development
Transmission Outage Database
PCUR, used with Performance Category Upgrade Requests
Primary Use - RPEWG – monitor, evaluate and report performance to WECC, core charge of RPEWG
WECC transmission line performance and tracking
Facilitate probabilistic planning
Provide common format for data collection, i.e., all of Western adopted for their use

5. Purpose of the TRD
In a 1996 WSCC survey, 90%, criteria expanded to be more probabilistic based.
PBRC Phase I development and implementation of event probabilities into Performance Table. Table S-1
Ultimate goal is to produce a more economically efficient system without sacrificing system reliability.

6. WECC TRD and NERC TADS WECC TRD Sheets
Transmission Circuit Attribute Table
Same as last year; Miles, Type, Voltage, Conductors per Phase, Overhead Ground Wires, Insulation Type, Cable Type, Structure Materials, Structure Types, Circuits per Structure, Terrain Exposure, Elevation Exposure.
Transformer Attribute Table
Same as last year; High and Low Side kV, Single or Multi, Rating.

7. WECC TRD and NERC TADS WECC TRD Documents
User’s Manual for Reporting WECC Common Transmission Outage Data
Forced Outage Performance of 200kV and above Transmission Lines, Cables and Transformers
Input Data Sheets formed
Costs of WECC Members and cost to WECC developed, presented and budgeted

8. WECC Table W-1

9. WECC TRD and NERC TADS RPEWG
Members of the RPEWG (includes WECC Staff as Members of RPEWG) only have access to raw outage data
RPEWG Members listed on the WECC website
Access to data governed by RPIC, Approved Exhibit C
Raw outage performance compared to criteria of WECC Performance Criteria Table W-1

10. WECC TRD and NERC TADS TADS (TRD) overview NERC wide data collection
AC circuits >= 200kV
Transformers Low Side >= 200kV
AC/DC Back to Back Converters >= 200kV AC Voltage
DC Circuits >= +/-200kV

11. WECC TRD and NERC TADS TADS Forms
1.1 Non – Reporting TO Statement
1.2 Reporting TO Statement
2.1 Tie Lines and Jointly Owned AC & DC
2.2 Jointly Owned AC/DC BTB Converters
3.1 AC & DC Circuit Inventory Data
3.2 Transformer Inventory Data
3.3 AC/DC BTB Converter Inverter Data
3.4 Summary Automatic Outage Data
4.1 AC Circuit Detailed Outage Data
4.2 DC Circuit Detailed Outage Data
4.3 Transformer Detailed Outage Data
4.4 AC/DC BTB Converter Detailed Outage Data
5.0 Event Code Data
Indicates WECC Members fill in these NERC TADS Forms
Indicates NERC data to be supplied by WECC from TRD Sheets

12. WECC TRD and NERC TADS Form 1.1 Non – Reporting TO Statement
TOS who do not own TRD/TADS Elements
Continuous submittal, “Once is Not Enough”
Form 1.2 Reporting TO Information
Business Contact
List of which Forms completed
NERC confidentiality default status of TO data

13. WECC TRD and NERC TADS Form 2.1 Tie Lines and Jointly Owned
Each Tie Line (s) TO has ownership
Mutual agreement and discussion between TOs

14. TRD Sheet Review
Go to Each Individual Sheet for Discussion of individual column:

15. Transmission Availability Database - TADS
TADS Metrics Calculated:
Inventory of AC & DC Equipment
Circuit & Transformer Outage F & D per outage initiation code
Circuit Sustained and Momentary Outage Metrics, Element or Other Initiated

16. TRD and TADS Differences
TRD Data Differences:
Focus to Common Corridor Outages (RPEWG)
Physical Attribute Data Inputs
Circuits;
Outage Rates per
Conductors per Phase
Number of Ground Wires
Insulator Type
Structure Material
Structure Type
Terrain Exposure
Elevation Range

17. Phase II Design
Phase II TADS designed to expand the collection of Phase I outage data to:
Planned Outage
Operational Outage – non automatic outage for purpose of avoiding emergency
Data collection will commence in 2011 for CY2010 data
Metrics Calculated:
Non – automatic outage frequency per element
Outage Duration per Element
Mean Element outage time
Median Element outage time
Percent of Elements without outage
Max percent of simultaneous outage

18. Phase II Design Phase II:
Non – automatic Outage data will compliment Phase I data
Complete outage information may influence Standards
May allow bridging the gap between Planning and Operating environments
U.S. – avoids duplicative reporting for EIA non – automatic outage reporting
Care used in evaluation or using data:
Live line maintenance
Region to region comparisons are not recommended

19. TRD & TADS Timelines SEP 1st 2009 Forms 1.1, 1.2 & 2.1 FEB 1st 2010
Reporting & Non – Reporting Transmission Owner Sheets
Jointly-Owned AC & DC Circuits
FEB 1st 2010
All 2009 Automatic Outage Data to WECC
MAR 1st 2010
WECC Data Submittal to NERC

20. WECC TRD and NERC TADS New Items for 2009: Sustained Outage Cause Code
“Unavailable” was removed
Initiating and Sustained will both need entered
Each TO must keep 5 years of supporting data for auto outage submittals
Phase II starts
Training will be held late 2009, either WECC or NERC giving this training, 1 to 1 translation (WECC)

21. Role of Regional Entities
The process involves a coordinated effort between NERC and the Regional Entities. This coordination is critical to the success of TADS. Regional Entities are responsible for the following tasks:
Request data from TOs.
Review tie lines and jointly-owned facilities to ensure that a single TO is responsible for TADS reporting.
Review inventory and outage data for consistency and completeness (but do not review a TO’s source data).
Assign common Event ID Codes for Events affecting more than one TO in their region.
Evaluate AC Circuit outages on common structures when the circuits are owned by different TOs.

22. Data Submittal & Review

29. NERC and WECC Databases
Conclusion
WECC
Specific to design
Structure in place and working
NERC
Displace EIA
General Outage Information
Not design specific
First year in 2008