WECC TRD/NERC TADS Webinar September, 2009

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

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

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

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.

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.

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

WECC Table W-1

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

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

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

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

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

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

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

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

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

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

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

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 1.01.10 Training will be held late 2009, either WECC or NERC giving this training, 1 to 1 translation (WECC)

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.

Data Submittal & Review

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