Circuit Reliability Review

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Brittany Barnett
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1 Circuit Reliability Review Carpinteria January 2018

Building a Smarter Grid for Southern California Southern California Edison is developing an electric grid to support California s transition to a clean and sustainable future that meets the needs and

2 Building a Smarter Grid for Southern California Southern California Edison is developing an electric grid to support California s transition to a clean and sustainable future that meets the needs and expectations of our customers. We are investing more than $13 billion in the power distribution grid over three years ( ). Our main investment goal is to increase power reliability through significant upgrades. The investments include: Upgrading cables, poles, switches and transformers Updating the grid so it can accommodate new technologies, such as smart inverters that will allow for the twoway flow of solar energy Adapting the power system to accommodate future California policy related to energy storage, electric transportation and renewable energy Providing enhanced automation and monitoring devices to allow us to better respond to changes on the grid Our investments in local communities will help ensure that customers receive safe, reliable, and affordable electricity now and in the future. Learn more at edison.com/innovation 2

3 Understanding Your Reliability Report As your electric utility, we want you to always have power when you need it. To get there, we constantly track and monitor electric outages across our service territory, and we measure our system reliability from this data. The two metrics we rely on are common in the electric utility industry: the System Average Interruption Duration Index (SAIDI) and the System Average Interruption Frequency Index (SAIFI). Both are described in more detail on the next page. Replacing and upgrading our infrastructure will help SCE maintain or improve SAIDI and SAIFI measurements. This report provides historical reliability data for the circuits that serve your jurisdiction and our proposed infrastructure upgrades for the current year. To view other reliability reports, visit sce.com>outage Center>Maintaining Reliable Service 3

4 Reliability Metrics MOMENTARY OUTAGES: OUTAGES LASTING 5 MINUTES OR LESS SUSTAINED OUTAGES: OUTAGES LASTING LONGER THAN 5 MINUTES MAIFI: o The number of times the average customer is interrupted by Momentary outages each year. SAIFI: o The number of times the average customer is interrupted by Sustained outages each year. SAIDI: o The cumulative amount of time the average customer is interrupted by Sustained outages each year. 4

5 Cities in the SANTA BARBARA District CityList1 CARPINTERIA GOLETA ISLA VISTA MISSION CANYON MONTECITO SUMMERLAND TORO CANYON CITY OF SANTA BARBARA 5

6 * 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. 6

7 Overview of Carpinteria CircuitList1 There are 6 circuits that serve Carpinteria 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers CANALINO(2.4KV) CARPOIL(16KV) 2, COPY(4.16KV) SEACLIFF(16KV) 1, SHEFFIELD(16KV) 2, VALLECITO(16KV) 3, Grand Total 9,589 7

8 Reliability History of Circuits Serving Carpinteria (No Exclusions) BarChart SAIDI (average minutes of sustained interruptions) Carpinteria SAIFI (average frequency of sustained interruptions) MAIFI (average frequency of momentary interruptions) SCE SYSTEMWIDE ** Exclusions are days which utilities are allowed to remove from their metrics because the outages on those days were caused by acts of nature. **Data is as of 02/20/2018, data can be slightly different due to outage data validation process 8

9 Causes of Repair Outages in Carpinteria 2017 SAIDIChart 3rd Party 1.3% Contributions to SAIDI by Outage Cause Equipment Failure e.g., in-service failure of transformer, switch, or conductors Vegetation/Animal e.g., tree branch, rodent, or bird causing a short circuit between conductors Other e.g., patrolled but no cause found Operations e.g., urgent maintenance w/o 3-day notice 3 rd Party e.g., balloon, car hit pole, dig-in Weather /Fire /Earthquake 54.2% Equipment Failure 23.3% Other 9.8% Operation 10.6% 3rd Party Equipment Failure Operation Other Vegetation /Animal Weather /Fire /Earthquake Vegetation /Animal 0.9% SAIDI = the cumulative amount of time the average customer is interrupted by sustained outages each year. 9

10 Causes of Repair Outages in Carpinteria 2017 SAIFIChart 3rd Party 0.8% Contributions to SAIFI by Outage Cause Equipment Failure e.g., in-service failure of transformer, switch, or conductors Vegetation/Animal e.g., tree branch, rodent, or bird causing a short circuit between conductors Other e.g., patrolled but no cause found Operations e.g., urgent maintenance w/o 3-day notice 3 rd Party e.g., balloon, car hit pole, dig-in Weather /Fire /Earthquake 63.9% Equipment Failure 5.7% Operation 5.5% Other 16.4% Vegetation /Animal 7.7% 3rd Party Equipment Failure Operation Other Vegetation /Animal Weather /Fire /Earthquake SAIFI = the number of times the average customer is interrupted by sustained outages each year 10

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13 Back-up Slides Reliability Histories of Circuits Serving Carpinteria Updated through Dec 2017

14 Average Reliability of 6 Circuits Serving Carpinteria CitySummary st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI 6 Circuits Serving Carpinteria -- Total Customers: 9, rd Party 0% 0% 26% 2% 3% 3% 0% 0% 27% % 20% % 1% - Equipment Failure 75% 41% 0% 42% 18% 19% 25% 15% 15% 39% 14% - 64% 56% 55% 23% 5% 81% 13% 2% 1% 23% 6% 3% Operation 8% 43% 13% 2% 2% 9% 8% 3% - 7% 2% - 24% 23% - 6% 1% - 9% 6% 4% 11% 6% 4% Other % 6% 5% 8% 28% 68% 1% 38% 24% 42% 2% 1% 45% 71% 94% 7% 1% 1% 1% 10% 16% 3% Vegetation/Animal - - 8% 3% 1% 18% 0% 0% 3% 9% 58% - 0% 0% % % 8% 0% Weather/Fire/Earthquake 17% 17% 4% 44% 72% 42% 39% 13% 54% 8% 3% 58% % 92% 94% 54% 64% 90% SCE SYSTEMWIDE 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 3 rd Party: e.g., balloons, car hit pole, dig-in Vegetation/Animal: e.g., tree branch, rodent, or bird causing short circuit across conductors 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. 14

15 Reliability Histories for Individual Circuits Serving Carpinteria - 1 of st Qtr nd Qtr rd Qtr th Qtr SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI CANALINO(2.4KV) - Customers: CircuitHistory rd Party % 50% Equipment Failure Operation 100% 100% - - Other % % 100% Vegetation/Animal % - Weather/Fire/Earthquake % 50% - 100% 100% 100% 100% 100% 100% CARPOIL(16KV) - Customers: 2, rd Party Equipment Failure 100% 100% - 24% 8% - 56% 7% 100% % 37% 2% 0% - 14% 1% - Operation % 3% 66% 63% % 2% - Other % % 90% - 31% 3% 100% 100% 12% 14% - Vegetation/Animal % % 97% - - 2% 7% - Weather/Fire/Earthquake % 92% - 98% 100% 100% 46% 75% 100% COPY(4.16KV) - Customers: rd Party Equipment Failure 100% 100% % % - 12% Operation % 100% Other % % 50% % 100% % 38% 17% 6% Vegetation/Animal - 67% - - Weather/Fire/Earthquake % 50% 100% - 100% 100% 93% 62% 83% 82% SEACLIFF(16KV) - Customers: 1, rd Party Equipment Failure 96% 85% 0% 7% 2% 31% 3% 1% - 10% 7% 63% 27% 80% 2% 5% 4% 6% 10% 16% Operation 1% 7% - 1% 2% - 6% 6% % 3% - 11% 9% 0% 11% 7% 0% Other % 21% 49% 7% 12% 43% 8% 44% 23% 100% % 70% 7% 0% 0% 7% 3% 18% 7% Vegetation/Animal % 24% 62% 0% 0% 100% 100% % % 0% 2% Weather/Fire/Earthquake 4% 8% 2% 28% 23% - 80% 50% 92% 45% 70% % 86% 89% 80% 65% 74% 15

16 Reliability Histories for Individual Circuits Serving Carpinteria - 2 of 2 CircuitHistory st Qtr nd Qtr rd Qtr th Qtr 2017 SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI 2017 SHEFFIELD(16KV) - Customers: 2, rd Party % 9% 8% % 34% % 3% - Equipment Failure 64% 59% - 34% 21% 25% 26% 7% - 33% 11% - 59% 43% 55% 1% 0% 100% 53% 5% 1% 50% 8% 3% Operation 5% 3% - 0% 0% - 4% 4% - 42% 55% - 6% 20% - 15% 4% 5% 4% - Other % 12% 10% 16% 49% 74% 1% 17% 18% 100% 4% 2% 45% 84% 96% - 3% 3% - 9% 15% 2% Vegetation/Animal % 0% - 1% 0% 27% 8% 16% - - 1% 0% - Weather/Fire/Earthquake 31% 38% 36% 47% 60% 52% 21% 15% 72% - 44% 92% 99% 30% 68% 95% VALLECITO(16KV) - Customers: 3, rd Party 3% 0% 40% % 0% 35% Equipment Failure 7% 1% - 64% 26% 1% 49% 30% 20% 45% 16% - 99% 99% - 5% 0% 32% 6% - Operation 50% 93% 20% 4% 4% 29% 15% 2% % 12% 9% 8% 8% 8% Other % % 68% - 42% 27% 40% 1% 1% - 95% 100% 22% 18% 4% Vegetation/Animal - 7% 56% - - 2% 13% - Weather/Fire/Earthquake 39% 6% - 32% 69% 70% 0% 0% 45% 5% 1% 60% % 88% 91% 36% 56% 88%

Circuit Reliability Review

Circuit Reliability Review Goleta January 2018 Building a Smarter Grid for Southern California Southern California Edison is developing an electric grid to support California s transition to a clean and