Circuit Reliability Review

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Jeffrey McCormick
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1 Circuit Reliability Review Malibu 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 THOUSAND OAKS District CityList1 AGOURA HILLS CALABASAS CASA CONEJO HIDDEN HILLS LOS ANGELES MALIBU MOORPARK OAK PARK SIMI VALLEY THOUSAND OAKS WESTLAKE VILLAGE 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 Malibu CircuitList1 There are 8 circuits that serve Malibu 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers CUTHBERT(16KV) 2, GALAHAD(16KV) 2, MAGUIRE(16KV) MERLIN(16KV) NICHOLAS(16KV) 1, SEABOARD(16KV) SERRA(16KV) TUNA(16KV) Grand Total 9,667 7

Reliability History of Circuits Serving Malibu (No Exclusions) BarChart SAIDI (average minutes of sustained interruptions) 400.0 350.0 300.0 250.0 200.0 150.0 100.0 50.0 0.0 2014 2015 2016 2017 375.

8 Reliability History of Circuits Serving Malibu (No Exclusions) BarChart SAIDI (average minutes of sustained interruptions) Malibu 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 Malibu 2017 SAIDIChart Contributions to SAIDI by Outage Ca 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 Vegetation /Animal 0.0% Other 8.2% Weather /Fire /Earthquake 21.4% Operation 10.2% 3rd Party 11.9% Equipment Failure 48.4% 3rd Party Equipment Failure Operation Other Vegetation /Animal Weather /Fire /Earthq SAIDI = the cumulative amount of time the average customer is interrupted by sustained outages each year. 9

10 Causes of Repair Outages in Malibu 2017 SAIFIChart Contributions to SAIFI by Outage Cause Vegetation /Animal 0.0% 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 Other 10.1% Operation 11.6% Weather /Fire /Earthquake 14.7% 3rd Party 24.2% Equipment Failure 39.4% 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 Malibu Updated through Dec 2017

14 Average Reliability of 8 Circuits Serving Malibu 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 8 Circuits Serving Malibu -- Total Customers: 9, rd Party 11% 12% 9% 8% 3% 14% 7% 6% 5% 7% 8% 3% 32% 45% 13% 36% 32% 12% 24% 8% Equipment Failure 25% 28% 18% 50% 55% 37% 49% 39% 43% 48% 43% 46% 60% 52% 94% 9% 19% 36% 50% 27% 47% 48% 39% 64% Operation 33% 32% 33% 18% 13% 0% 5% 12% 1% 7% 19% - 6% 2% 1% 88% 75% 4% 4% 2% 2% 10% 12% 1% Other 8% 12% 29% 21% 28% 33% 27% 26% 30% 7% 10% 44% - - 5% 3% 5% 56% 15% 18% 10% 8% 10% 23% Vegetation/Animal 0% 1% 9% 0% 0% 2% 0% 0% Weather/Fire/Earthquake 22% 15% 3% 3% 1% 14% 12% 17% 21% 31% 20% 7% 2% 0% % 18% 18% 10% 21% 15% 4% 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 Malibu - 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 CUTHBERT(16KV) - Customers: 2, CircuitHistory rd Party - 33% 22% 13% 11% % 100% % 41% - Equipment Failure 16% 22% 47% 100% 99% 34% 28% 44% 44% 88% 92% 100% % 100% 100% 80% 57% 59% Operation 14% 11% - 0% 1% - 1% 2% - 5% 3% - 0% 0% - 100% 100% 2% 1% - Other 1% 1% 15% 18% 11% 7% 5% % % 2% 41% Vegetation/Animal 1% 8% 48% - Weather/Fire/Earthquake 69% 58% 5% % 34% 22% 33% GALAHAD(16KV) - Customers: 2, rd Party % % 5% % 54% 51% 6% 26% 19% Equipment Failure 39% 44% 3% 43% 20% 66% 37% 33% 37% 17% 3% 65% 82% 59% 76% 4% 3% - 18% 6% - 22% 6% 44% Operation 46% 44% 76% 50% 40% 1% 5% 9% 2% 68% 95% - 18% 41% - 96% 97% 100% 6% 1% - 47% 47% 2% Other 1% 1% 0% 7% 40% 33% 40% 30% 20% % % % 27% 25% 8% 13% 26% Vegetation/Animal Weather/Fire/Earthquake 14% 11% 4% % 22% 42% 15% 1% % 13% 25% 17% 7% 9% MAGUIRE(16KV) - Customers: rd Party 24% 14% - 51% 21% - 25% 7% 7% 99% 100% 48% % 57% 100% 50% 69% 84% Equipment Failure % 3% - 35% 4% 8% 18% - 20% 11% - 24% 10% - 17% 7% - Operation 1% 0% - 2% 8% - 29% 88% 9% 1% 0% - 92% 82% 8% 5% - 8% 5% - Other 69% 85% 100% 42% 68% 53% % % % 89% - 35% 28% - 25% 20% 16% Vegetation/Animal % 0% 47% - - Weather/Fire/Earthquake 5% 1% 11% 1% MERLIN(16KV) - Customers: rd Party Equipment Failure % 66% - 44% 32% 29% % 100% 100% 79% 41% 100% % 2% 22% 95% Operation 68% 44% - 0% 0% - 0% 0% % 59% 0% 1% - Other 32% 56% 100% 46% 33% - 46% 57% 71% % % Vegetation/Animal - - 0% 0% Weather/Fire/Earthquake % 0% 100% 9% 12% - 100% 100% 67% % 100% - 98% 78% 3% 15

16 Reliability Histories for Individual Circuits Serving Malibu - 2 of 2 CircuitHistory 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 NICHOLAS(16KV) - Customers: 1, rd Party 55% 75% - 3% % Equipment Failure 15% 9% 89% 60% 70% 71% 60% 46% 85% 80% - 100% 100% - 88% 77% - 72% 61% 43% Operation % 7% - 11% 40% 15% 20% 100% % 23% 100% 0% 0% 6% Other % 80% % 20% 34% 50% - 19% 33% 47% Vegetation/Animal Weather/Fire/Earthquake 30% 16% 100% 28% 14% - 0% 0% - 9% 6% 1% - 9% 6% 1% SEABOARD(16KV) - Customers: rd Party 1% 1% % 0% - Equipment Failure % 84% - 25% 66% - 95% 98% % 81% - Operation - - 6% 16% Other 100% % % Vegetation/Animal Weather/Fire/Earthquake - 75% 34% - 4% 1% % 19% - SERRA(16KV) - Customers: rd Party 26% 27% 78% 100% 100% 100% 39% 41% 100% Equipment Failure % 41% 68% 94% 100% % 37% 33% Operation 74% 73% 22% % 17% 32% 6% 100% 100% - 10% 3% - Other Vegetation/Animal Weather/Fire/Earthquake - 100% 100% 100% - 100% % 60% 67% TUNA(16KV) - Customers: rd Party 53% 86% - 44% 28% Equipment Failure 46% 8% 46% 40% 38% 2% 63% 18% 30% 100% 100% % 100% - Operation 1% 6% - 0% 0% - 17% 71% Other % 16% 33% 98% % % % Vegetation/Animal Weather/Fire/Earthquake % 11% 16

Circuit Reliability Review

Circuit Reliability Review Tehachapi 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