WECC TRD/NERC TADS Webinar September, 2009. WECC TRD and NERC TADS Brian Keel, Salt River Project...
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Transcript of WECC TRD/NERC TADS Webinar September, 2009. WECC TRD and NERC TADS Brian Keel, Salt River Project...
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
3
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
4
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.
5
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
8
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
15
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
16
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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
recommended18
TRD & TADS Timelines
• SEP 1st 2009• Forms 1.1, 1.2 & 2.1
– 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)
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.
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Data Submittal & Review
23
2007 2008 Total Responding Utilities 38 58
Total Number of 500kV Transmission Lines 228 252 Total Number of 345kV Transmission Lines 107 138 Total Number of 230kV Transmission Lines 1408 1584
Total Number of 500kV outages 344 397 Total Number of 345kV outages 314 320 Total Number of 230kV outages 890 1003
Total Miles of 500kV Lines 15,677 18,826 Total Miles of 345kV Lines 8,864 11,099 Total Miles of 230kV Lines 41,422 44,188
Percent of 500-600kV Lines Data Received 97% 98% Percent of 300-400kV Lines Data Received 89% 99% Percent of 200-300kV Lines Data Received 97% 98%
Total Percent of all WECC Lines Data Received
96% 98%
Table 1 – Totals of 2008 TRD Data
24
Outages per Month - Sustained & Momentary
110
90 75 64 100 13
5
69 71 94 101
42
21 28
40
64
34
31 24
168
104
21
110
131
34
0
50
100
150
200
250
300
Momentary
Sustained
25
Momentary Outages Average Value 2008 Data
Outage Rate per circuit Per 100 miles per circuit Per 100 miles
500-600kV 0.73 1.06 0.49 0.66
300-400kV 1.22 1.43 0.71 0.89
200-300kV 0.32 1.10 0.21 0.74
Table 2 – Momentary Outages – 2008 vs. Average
Sustained Outages Average Value 2008 Data
Outage Rate per circuit Per 100 miles per circuit Per 100 miles
500-600kV 0.98 1.43 1.07 1.44
300-400kV 1.80 2.13 1.46 1.83
200-300kV 0.46 1.57 0.40 1.41
Table 3 – Sustained Outages – 2008 vs. Average
26
Transformer Age
39
16 7 2
57
69
57
01020304050607080
0-10 11-20 21-30 31-40 41-50 50+ Unknown
Years
Nu
mb
er o
f T
ran
sfo
rmer
s
INVENTORY (MILES)200-299 300-399 400-599
NERC REPORT 103,942 57,228 33,321
WECC (NERC REPORT) 45,097 11,142 17,928
WECC REPORT 44,188 11,099 16,604
SERC 20,315 3,230 8,590
TRE - 10,614 -
RFC 6,474 13,674 2,789
MRO 10,689 6,867 473
OUTAGES / CIRCUIT200-299 300-399 400-599
NERC REPORT 0.59 0.94 0.96
WECC (NERC REPORT) 0.65 2.35 1.43
WECC REPORT 0.63 2.32 1.58
SERC 0.47 0.94 0.66
TRE 0 1.12 0
RFC 0.32 0.59 0.39
MRO 0.54 0.9 0
The results of common corridor and tower are that there were 24 common outages recorded in WECC in 2008: 16 outages of 2 elements, 3 outage of 3 elements, 3 outages of 4 elements, and 2 outages of 5 elements. 17 of the outages were in a common right of way and 7 were recorded as being on common towers. The numbers of common outages by cause are: Failed AC Substation – 3 Fire – 2 Lightning – 6 Other – 1 Human Error – 3 Power System Condition – 5 Foreign – 1 Contamination -2 Failed Protection System - 1
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