IEEE Benchmark Year 2018 Results for 2017 Data...
Transcript of IEEE Benchmark Year 2018 Results for 2017 Data...
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IEEE Benchmark Year 2018 Results for 2017 Data
2018 General Meeting
Distribution Reliability Working Group
Portland, Oregon
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Background to IEEE DRWG Benchmark Study
1. Initiated in 2003, conducted annually
2. Participants are anonymous with key identifier to retain anonymity
3. Participation list is not revealed to anyone
4. Each participant can choose to share their results
5. No inference is made about good or bad reliability
6. Intended to provide information for users to assess their performance relative to peers
7. Called the 2018 Study (for 2017 Results)2
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Benchmarking• Using annual key metrics (SAIDI, SAIFI and CAIDI) to assess
performance of a system may be useful, however, needs to be tempered
• DRWG Study attempts to identify various aspects that could cause a difference in reported metrics
• Data may not be directly comparable, since – Data collection & system differences exist
– Certain segmentation differences can occur, although we strive to have the differences minimized
• IEEE 1366-2003/2012 • addresses data issues by clearly defining the rules (i.e. what data should be
segmented)
• It DOES NOT address the data collection issues
• Companies may not report all forms of outages, due to data collection issues or other reasons
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Region 0: Spans States or Unknown
Region 1: Northeast
Region 2: Mid-Atlantic
Region 3: Southeast
Region 4: Midwest
Region 5: Southwest
Region 6: South
Region 7: Northwest
Northwest: 10
Participants
Southwest: 12
Participants
Midwest: 18
Participants
South: 11
Participants Southeast : 4
Participants
Northeast: 11
Participants
Mid-Atlantic:
24 Participants
Regions represented by the participants
2018 Benchmark Study for 2017 Data
Spans States or Other: 3
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Classification of Respondents-update
• 89,172,744 customers represented in North America
• 2018 Survey for 2017 Data– 7 Small (=< 100,000 customers)
– 55 Medium (>100,000 and <1,000,000 customers)
– 31 Large (>= 1M customers)
• Circuit Mileage Reported by all entrants– 2.22 million miles, for which 89 companies reported
on overhead (72%) versus underground (28%)
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Respondents•About 250 companies have responded at some time
•2018 Survey: 93 entries recorded
SAIDI ALL SAIDI IEEE SAIDI WOF SAIDI WOP SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL CAIDI IEEE
0 MIN 41 32 1 1 0.35 0.33 0.01 0.01 52 46
1 Q1 134 78 74 66 1.03 0.82 0.73 0.67 118 94
2 MEDIAN 222 120 117 109 1.34 1.07 0.95 0.84 162 111
3 Q3 382 189 162 152 1.90 1.47 1.19 1.16 230 137
4 MAX 2493 442 408 369 4.53 2.44 2.10 1.95 1223 325
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Respondents by Utility Size
Quartile Small 7 SAIDI ALL SAIDI IEEE SAIDI WOF SAIDI WOP SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL CAIDI IEEE
0 MIN 62 48 46 43 0.91 0.91 0.82 0.67 52 46
1 Q1 90 81 68 56 1.22 1.12 0.93 0.70 78 74
2 MEDIAN 183 92 96 81 1.41 1.21 1.04 0.88 84 78
3 Q3 336 192 154 118 3.32 1.85 1.14 0.98 127 92
4 MAX 728 226 161 151 4.53 2.44 1.38 1.11 185 135
Quartile Medium 55 SAIDI ALL SAIDI IEEE SAIDI WOF SAIDI WOP SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL CAIDI IEEE
0 MIN 41 32 32 31 0.35 0.33 0.31 0.31 71 63
1 Q1 134 91 78 76 1.05 0.85 0.73 0.69 124 96
2 MEDIAN 219 128 122 114 1.34 1.11 0.99 0.88 161 115
3 Q3 355 192 171 162 1.94 1.55 1.33 1.32 212 138
4 MAX 1741 406 386 339 3.41 2.33 2.10 1.95 674 325
Quartile Large 31 SAIDI ALL SAIDI IEEE SAIDI WOF SAIDI WOP SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL CAIDI IEEE
0 MIN 50 45 1 1 0.73 0.51 0.01 0.01 67 61
1 Q1 142 76 74 61 0.94 0.73 0.70 0.63 118 98
2 MEDIAN 253 113 107 90 1.37 0.96 0.88 0.82 188 111
3 Q3 422 179 158 139 1.54 1.26 1.15 0.95 300 141
4 MAX 2493 442 408 369 2.83 2.29 1.76 1.53 1223 231
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Historic SAIDI-IEEE & Total
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Historic SAIFI-IEEE & Total
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Historic CAIDI-IEEE & Total
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2018201720162015201420132012201120102009
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Boxplot of ieee_saidi
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2018 SAIDI for 2017 DataSorted by IEEE w/ME, Feed & Plan
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2018 SAIFI for 2017 DataSorted by IEEE w/ME, Feed & Plan
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Total (STD) SAIDI 2018 for 2017 Data
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IEEE SAIDI 2018 for 2017 Data
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Total (STD) SAIFI 2018 for 2017 Data
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IEEE SAIFI 2018 for 2017 Data
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Total (STD) CAIDI 2018 for 2017 Data
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IEEE CAIDI 2018 for 2017 Data
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Additional Study: Are 4th Quartile Companies Departing Study & Improving Statistics?
The attached file has 4 Charts that should tell all that is needed to know.- If a company stopped sending info and did not start sending data later on, it is a
“Permanent Dropout.”- If a Company stopped sending info but started sending data later on, it is a “Recovered
Dropout.”
Some companies stopped and started a number of times. Each of the stops with restarts were counted as “Recovered Dropouts.”If a company stopped, restarted and stopped permanently, it was counted as both a “Recovered and a Permanent Dropout.”
NOTE: There were no company dropouts between 2009 and 2010.It appears that companies in the first Quartile that stop sending data are more apt
to restart sending data in later years.The number of Permanent Dropouts each year appears to be dropping.
Hope this helps squash any error assumptions.
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Additional Study: Dropouts Not Recovered
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Additional Study: Dropouts Recovered
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Additional Study: EIA Data Comparison
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SAIDI and SAIFI w/ and w/o MEDs
Additional Study: EIA Data Comparison
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Cause Code Survey Questions
Survey results just processed and summary is
underway.
Early review indicates information will be informative
for both 1366 and 1782 standard enhancements
Data analysis task force will be provided summary
information within next month and develop
interpretations
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Questions
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