1. NERC TADS Update
Andrew Slone, Engineer, Reliability Performance Analysis
WECC RPEWG Meeting
May 14, 2013

2. WECC Specific TADS Information
Agenda
TADS Transition
Quarterly Reporting
Key Inventory Fields
Bulk Electric System Alignment
TADS Training/Webinars
WECC Specific TADS Information
WECC TO Direct Upload
Importing TRD Data Into TADS
WECC-FAC-501 Study Update

3. TADS Transition Timeline
Date
TADS Outage Data
Key Inventory Data
March 01, 2013
TADS 2012 Annual Data Reporting Submittal Deadline
(200 kV+ Elements Only)
June 30, 2013
Element Identifier and Circuit Mileage Fields Only (200 kV+ Elements Only)
September 30, 2013
TADS 2013Q1 and 2013Q2 Data Submittal Deadline
November 15, 2013
TADS 2013Q3 Data Submittal Deadline
February 15, 2014
TADS 2013Q4 Data Submittal Deadline
Update All Key Inventory Fields
May 15, 2014
TADS 2014Q1 Data Submittal Deadline
(All TADS Elements)
Element Identifier and Circuit Mileage Fields Only (Less than 200 kV Elements Only)
August 15, 2014
TADS 2014 Q2 Data Submittal Deadline (All TADS Elements)
November 15, 2014
TADS 2014 Q3 Data Submittal Deadline (All TADS Elements)
February 15, 2015
TADS 2014 Q4 Data Submittal Deadline

4. TADS Quarterly Reporting
TADS Changing from Annual to Quarterly Reporting Schedule
Transmission Owners Should Submit TADS Outage Data 45 Days After Each Quarter
Data Changes for Prior Quarters:
During entry period, can update prior quarter outages
Freeze Period
After entry period ends, prior quarter outages are “frozen” and cannot be edited
Current quarter outages, however, can be added/updated
Deep-Freeze
At end of Quarter 4 reporting, all outage and inventory data can no longer be edited

5. TADS Key Inventory Fields
TADS Changing from Summary Inventory to Individual Inventory
Inventory Forms Closely Resemble TRD, but Some Differences
Entity Unique Element ID Added
In lieu of TO Operator name and Element ID (e.g. TOElement1)
Can be Alphanumeric, including underscore
{Regional Entity, NCR, Element ID} combination will be unique NERC-wide
Instead of “In-service Date”, “Change/Reconfiguration Date”
Should be modified when circuit miles change to calculate proper equivalent circuit miles
Instead of “Parent Code”, “Precursor Element”
Can input multiple Precursor Elements

6. TADS Key Inventory Fields
Common Corridor (WECC Only)
Common Corridor information can be bulk uploaded into webTADS
Follows TRD definitions
AC Multi-Circuit Structure Miles calculated from Common Corridor
TADS Considers Element In-service Date as 1/1/2013 if Element In-service Date is ≤ 12/31/2012
BES Exception Field to handle new BES definition

7. TADS Bulk Electric System Alignment
TADS to Align with New Bulk Electric System Definition in 2014
Includes the Following BES Elements:
AC Circuits
DC Circuits
Transmission Transformers (No GSUs)
AC/DC Back to Back Converters
Two New Voltage Classes
BES kV
BES Less than 100 kV*
*The Bulk Electric System definition has a bright-line at 100 kV, but there is an option to include Less than 100 kV Elements by special inclusion

8. TADS Bulk Electric System Alignment
Elements > 200 kV, but excluded from BES?
2013: Continue to report in TADS
2014: Mark Element in inventory as “BES Excepted” and retire Element as of 1/1/ Element is no longer TADS-reportable.
BES Exceptions Approved After 1/1/2014:
Mark Element in inventory as “BES Excepted” and retire Element as of BES Exception approval date.
Element is no longer TADS-reportable after BES Exception approval date.

9. Additional Training Dates TBA for July, August, and September
TADS Training
3 Combined Software/Data TADS Training Classes Prior to June 30 Deadline
Will cover enough material for successful June 30 data submission
Additional Training Dates TBA for July, August, and September
Will cover enough material for successful September 30 data submission
Date
Training Type
June 12, 2013
1 PM-3 PM ET
Combined Software/Data Training
June 19, 2013
June 26, 2013

10. WECC Specific TADS Information
WECC Transmission Owner Direct Upload
WECC TOs will now upload to TADS directly instead of WECC DRE
WECC 2012 TRD inventory data already uploaded into webTADS
By June 30, WECC TOs should verify that all of their Element IDs are in webTADS and that circuit mileage for Elements is accurate as of January 1, 2013
By September 30, WECC TOs should upload their outage data into webTADS
Possible to Have WECC-Specific Training, if Desired

11. WECC-FAC-501 Enhancements
Trend average outage rates for the 7 sectors with more outages on lines with the standard over time
Evaluate whether average outage rates have changed since 2008
Use outage rates per mile to see if the results are the same
Study cause code impact on the 7 sectors:
Controllable cause codes
Failed AC Substation Equipment, Human Error, Failed AC Circuit Equipment, Failed Protection System Equipment
Contamination, Foreign Interference, Power System Condition
Vandalism (Terrorism, or Malicious Acts)
Environmental, Vegetation, Fire, Other
Uncontrollable cause codes
Lightning, Weather excluding lightning, Unknown
Consider outage duration, start time and climate (e.g., terrain)
Consider violation records (FAC and PRC-STD-005-1)
IPC and BPA Pre-2008 Outage Analysis
Analyzing Pre-2008 and Post-2008 Outage Data to Determine Effectiveness of WECC-FAC-501 Standard

12. Questions and Answers