Circuit Reliability Review 2020 - Southern California ...
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Circuit Reliability Review
Shaver Lake
2020
Who We Are
• Southern California Edison (SCE) is
an Edison International company
• One of the nation’s largest electric
utilities
• More than 130 years of history
• Headquartered in Rosemead,
California
• Regulated by the California Public
Utilities Commission (CPUC) and
the Federal Energy Regulatory
Commission (FERC)
• 50,000 square miles of SCE service
area across Central, Coastal, and
Southern California
• 15 million residents in service
territory
• 5 million customer accounts in 445
cities and communities
2
Our Grid
To deliver power safely, reliably and affordably, we monitor and maintain a vast electricity
system.
50,000 Square Miles
4,600 Circuits
1.5 Million Poles
119,000 Miles of Transmission
and Distribution Lines
730,000 Transformers
3
Strengthening and Modernizing the Grid
SCE plans to spend more than $5B each 2019 Capital Investments
year to maintain, improve, and harden
its infrastructure. 179 miles of underground cable
replaced
• Infrastructure reliability – updating underground
cables, poles, switches, and transformers 502 miles of overhead conductor
• Wildfire mitigation – hardening infrastructure, replaced for public safety
bolstering situational awareness capabilities, and
enhancing operational practices
16.4k distribution poles replaced
• Transmission – connecting renewables, installing
new substations, and updating lines
4.3k transmission poles replaced
• Grid readiness – updating the grid for impacts
from new technologies
71 underground structure
• Long-term energy policy – supporting energy
storage, electric vehicles, and renewables replacements
SCE’s investments support safe, reliable, affordable, and clean energy for our customers
4
Meeting California’s Climate Change Goals
PATHWAY 2045
SCE’S vision to help California achieve a carbon neutral future
Carbon neutrality is achieved through deep decarbonization of
electricity, transportation and building electrification,
and the use of low-carbon fuels
5
Addressing Wildfire Risk
• SCE filed its second Wildfire
Mitigation Plan in February 2020
• It builds on the progress made
in 2019 to reduce the risk of fire
ignitions caused by utility
infrastructure
• SCE crews will continue to work
to install hi-tech wildfire
mitigation tools and
technologies to make
communities safer, more
resilient, and to help reduce the
number of Public Safety Power
Shutoffs (PSPS)
6
Public Safety Power Shutoffs (PSPS)
• De-energizing power lines to prevent ignitions
• Used during elevated fire conditions
• Primarily impacts circuits in high fire risk areas
• Use of multiple methods to notify people in affected areas before, during and after a de-energization event
4-7 DAYS 3 DAYS 2 DAYS 1 DAY AHEAD POWER POWER
AHEAD AHEAD AHEAD SHUTOFF RESTORATION
Forecast SCE Incident SCE Incident 2nd Notification 3rd Notification 4th Notification
Weather & Fire Management Management PSPS Power Shutoff Power Restored
Conditions Team on Alert Team Activated Possible After Inspection
County 1st Notification
Operational Areas PSPS Possible sent
informed of to agencies and
potential customers
activation
PLANNING AND MONITORING OUTAGE
*Erratic or sudden onset of conditions may impact our ability to provide advanced notice to customers. 7
Reliability Overview
8
What is Reliability?
• In simplest terms:
Having dependable electricity when you
need it.
• Outages:
• Maintenance outages (aka planned
outages)
• Repair outages (aka unplanned outages)
• Sustained Outage = An outage lasting > 5
minutes
• Momentary Outage = An outage lasting ≤
5 minutes
Major Event Day (MED) : A day in which the daily system SAIDI exceeds a threshold value. For the purposes of calculating daily system
SAIDI, any interruption that spans multiple calendar days is accrued to the day on which the interruption began. Statistically, days having a
daily system SAIDI greater than a threshold value are days on which the energy delivery system experienced stresses beyond that normally
expected (such as severe weather).
Public Safety Power Shutoff (PSPS) : An operational protocol that SCE implements under extreme weather conditions in order to minimize
the threat of wildfires and keep communities safe from potentially dangerous situations. These types of sustained outages are temporary
and usually involve situations where high fire areas are experiencing adverse weather or public safety is at risk.
9
How Do We Measure Reliability?
SAIDI SAIFI MAIFI CAIDI
10Communities in the SHAVER LAKE District CityList1
BIG CREEK
DINKEY CREEK
FRESNO COUNTY
HUNTINGTON LAKE
MAMMOTH POOL
REDINGER LAKE
SHAVER LAKE
TAMARACK RIDGE
11*”Exclusions” are days which utilities are allowed to remove from their metrics because the outages on those days were caused by a severe acts of nature.
**In the columns showing “Rank,” lower numbers indicate poorer performance.
12Overview of Shaver Lake CircuitList1
There are 2 circuits that serve Shaver Lake 1
Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers
PERIMETER(12KV) 1,250 - - -
ROSEBUD(12KV) 818 - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
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- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
Grand Total 2,068
13BarChart
Reliability History of Circuits Serving Shaver Lake (No Exclusions)
2016 2017 2018 2019
3500.0
3197.8
3000.0
2500.0
SAIDI
(average 2000.0
minutes of 1500.0 1449.0
sustained 1000.0
interruptions) 530.8
500.0 134.5 139.7 136.8 178.0 Shaver Lake
132.5
0.0
10.0
9.1
SCE SYSTEMWIDE
8.0
6.5
SAIFI
6.0
(average 4.9
frequency of 4.0 3.1
sustained
interruptions) 2.0 1.1 1.2 0.9 1.0
**“Exclusions” are days which
0.0
utilities are allowed to
remove from their metrics
10.0 9.4
because the outages on
7.4
8.0
6.8 those days were caused by
MAIFI acts of nature.
(average 6.0
4.4
frequency of
4.0 **Data is as of 02/14/2020, data
momentary
interruptions) 1.6 1.8 can be slightly different due to
2.0 1.4 1.4
outage data validation process
0.0
14SAIDIChart
Causes of Repair Outages in Shaver Lake
2019
Contributions to SAIDI by Outage Cause
Vegetation /Animal 3rd Party PSPS
0.1% 0.0% 0.0%
Equipment Failure
e.g., in-service failure of transformer,
switch, or conductors Weather /Fire
Vegetation/Animal /Earthquake
e.g., tree branch, rodent, or bird 12.5%
causing a short circuit between
conductors
Other
e.g., patrolled but no cause found,
PSPS Equipment Failure
Operations 46.8%
e.g., urgent maintenance w/o 3-day
notice
3rd Party
e.g., balloon, car hit pole, dig-in Other
39.5%
PSPS
e.g., Public Safety Power Shutoff 3rd Party
Equipment Failure
Operation
Other
Vegetation /Animal
Operation Weather /Fire /Earthquake
1.1% PSPS
SAIDI = the cumulative amount of time the average customer is interrupted by “sustained” outages each year.
15SAIFIChart
Causes of Repair Outages in Shaver Lake
2019
Contributions to SAIFI by Outage Cause
3rd Party PSPS
0.0% 0.0%
3rd Party
Equipment Failure Equipment Failure
e.g., in-service failure of transformer, Weather /Fire Operation
switch, or conductors /Earthquake Other
27.6% Equipment Failure
Vegetation/Animal Vegetation /Animal
35.9%
e.g., tree branch, rodent, or bird Weather /Fire /Earthquake
causing a short circuit between PSPS
conductors
Other
e.g., patrolled but no cause found
Operations
e.g., urgent maintenance w/o 3-day
notice
3rd Party
e.g., balloon, car hit pole, dig-in
PSPS Other
35.4%
e.g., Public Safety Power Shutoff Operation
1.0%
Vegetation /Animal
0.1%
SAIFI = the number of times the average customer is interrupted by “sustained” outages each year
1617
18
Back-up Slides
Reliability Histories of Circuits Serving Shaver Lake
Updated through Dec 2019
19Average Reliability of 2 Circuits Serving Shaver Lake
CitySummary
2016 2017 2018 1st Qtr 2019 2nd Qtr 2019 3rd Qtr 2019 4th Qtr 2019 2019
SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI
2 Circuits Serving Shaver Lake -- Total Customers:
2,068 530.8 4.9 4.4 3197.8 9.1 6.8 132.5 3.1 7.4 707.2 3.9 5.8 109.9 1.6 3.2 1.8 0.0 - 630.1 1.0 0.4 1449.0 6.5 9.4
3rd Party 1% 8% - 0% 0% - - - - - - - - - - 25% 12% - - - - 0% 0% -
Equipment Failure 40% 18% 28% 3% 5% 36% 33% 43% 13% 83% 44% 1% - - - 75% 88% - 15% 62% - 47% 36% 1%
Operation 1% 7% 3% 2% 5% - - - - 2% 1% - 3% 2% - - - - - - - 1% 1% -
Other 5% 20% 41% 82% 16% 38% 3% 16% 60% 2% 18% 82% 17% 77% 70% - - - 85% 38% 100% 40% 35% 79%
Vegetation/Animal - - - - - - - - - 0% 0% - - - - - - - - - - 0% 0% -
Weather/Fire/Earthquake 54% 47% 28% 13% 74% 26% 63% 41% 26% 13% 37% 17% 80% 22% 30% - - - - - - 12% 28% 21%
PSPS - - - - - - - - - - - - - - - - - - - - - - - -
SCE SYSTEMWIDE 134.5 1.1 1.6 139.7 1.2 1.8 136.8 0.9 1.4 28.1 0.3 0.4 18.9 0.2 0.4 31.8 0.2 0.3 99.3 0.3 0.3 178.0 1.0 1.4
Notes:
No outages are excluded from the metrics.
Outage Causes:
Other: e.g., patrolled but no cause could be found
Operations: e.g., urgent maintenance w/o 3-day notice to customers
3rd Party: e.g., balloons, car hit pole, dig-in
Vegetation/Animal: e.g., tree branch, rodent, or bird causing short circuit across conductors
PSPS: e.g., Public Safety Power Shutoff
SAIDI (minutes) = the cumulative amount of time the average customer is interrupted by “sustained” (longer than 5 minutes) outages.
SAIFI (interruptions) = the number of times the average customer is interrupted by “sustained” outages.
MAIFI (interruptions) = the number of times the average customer is interrupted by “momentary " (lasting 5 minutes or less) outages.
20Reliability Histories for Individual Circuits Serving Shaver Lake - 1 of 1
2016 2017 2018 1st Qtr 2019 2nd Qtr 2019 3rd Qtr 2019 4th Qtr 2019 2019
SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI
PERIMETER(12KV) - Customers: 1,250 452.2 4.0 5.3 4982.1 11.1 7.7 87.5 2.0 8.4 942.6 4.4 6.5 21.4 1.0 2.8 - - - 152.0 1.0 - 1116.0 6.5 9.3
3rd Party - - - 0% 0% - - - - - - CircuitHistory
- - - - - - - - - - - - -
Equipment Failure 52% 25% 29% 3% 7% 51% 52% 50% 12% 88% 50% 12% - - - - - - 100% 100% - 88% 50% 1%
Operation 0% 0% - 1% 6% - - - - - - - 27% 4% - - - - - - - 1% 1% -
Other 7% 25% 33% 86% 16% 36% 8% 40% 58% 3% 23% 83% 73% 96% 64% - - - - - - 4% 31% 77%
Vegetation/Animal - - - - - - - - - 0% 0% - - - - - - - - - - 0% 0% -
Weather/Fire/Earthquake 41% 50% 38% 9% 71% 13% 40% 11% 30% 9% 27% 15% - - 36% - - - - - - 8% 18% 21%
PSPS - - - - - - - - - - - - - - - - - - - - - - - -
ROSEBUD(12KV) - Customers: 818 653.6 6.3 3.0 387.6 6.0 5.2 203.9 4.9 5.8 338.5 3.1 4.7 248.6 2.5 3.9 4.6 0.0 - 1379.1 1.0 1.0 1970.7 6.6 9.6
3rd Party 2% 16% - - - - - - - - - - - - - 25% 12% - - - - 0% 0% -
Equipment Failure 26% 11% 24% - - - 21% 39% 17% 59% 30% - - - - 75% 88% - - - - 10% 14% -
Operation 2% 14% 13% 12% 2% - - - - 9% 3% - - - - - - - - - - 2% 2% -
Other 2% 16% 63% 6% 17% 43% - - 65% 2% 7% 79% 9% 64% 77% - - - 100% 100% 100% 71% 42% 81%
Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - -
Weather/Fire/Earthquake 68% 43% - 82% 82% 57% 79% 61% 17% 30% 60% 21% 91% 36% 23% - - - - - - 17% 42% 19%
PSPS - - - - - - - - - - - - - - - - - - - - - - - -
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