Circuit Reliability Review Diamond Bar 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 expectations of our customers. We are investing more than $13 billion in the power distribution grid over three years (2017-19). 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
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
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
Cities in the COVINA District CityList1 AVOCADO HEIGHTS AZUSA CHARTER OAK CITRUS CLAREMONT COVINA DIAMOND BAR GLENDORA HACIENDA HEIGHTS INDUSTRY LA PUENTE LA VERNE POMONA ROWLAND HEIGHTS SAN DIMAS SOUTH SAN JOSE HILLS VALINDA VINCENT WALNUT WEST COVINA WEST PUENTE VALLEY 5
* 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
Overview of Diamond Bar CircuitList1 There are 20 circuits that serve Diamond Bar 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers AMBUSHERS(12KV) 1,850 - - - ANTLER(12KV) 1,519 - - - BANDIT(12KV) 2,094 - - - BOOTHILL(12KV) 679 - - - BRAKEMAN(12KV) 1,708 - - - CHIME(12KV) 2,156 - - - FINISHLINE(12KV) 2,236 - - - GONDOLA(12KV) 810 - - - HEISMAN(12KV) 2,210 - - - HIGHNOON(12KV) 2,292 - - - LAWMAN(12KV) 2,108 - - - PANHANDLE(12KV) 1,068 - - - PLACE(12KV) 772 - - - SHOW(12KV) 781 - - - SUBWAY(12KV) 32 - - - TRAIN(12KV) 1,717 - - - TRIDENT(12KV) 1,214 - - - UTOPIA(12KV) 592 - - - WAHOO(12KV) 2,129 - - - WOODVIEW(12KV) 1,326 - - - Grand Total 29,293 7
Reliability History of Circuits Serving Diamond Bar (No Exclusions) BarChart 2014 2015 2016 2017 SAIDI (average minutes of sustained interruptions) 160.0 140.0 120.0 100.0 80.0 60.0 40.0 20.0 113.8 135.0 112.1 114.8 89.4 134.5 109.7 139.7 Diamond Bar 0.0 SAIFI (average frequency of sustained interruptions) 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.8 1.0 1.0 0.9 1.1 1.1 1.2 1.2 SCE SYSTEMWIDE ** Exclusions are days which utilities are allowed to MAIFI (average frequency of momentary interruptions) 2.0 1.5 1.0 0.5 1.3 1.4 1.4 1.1 1.6 0.6 0.5 1.8 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 0.0 8
Causes of Repair Outages in Diamond Bar 2017 SAIDIChart Contributions to SAIDI by Outage Cause Vegetation /Animal 3.8% 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 18.2% Weather /Fire /Earthquake 14.8% 3rd Party 10.0% Equipment Failure 47.9% 3rd Party Equipment Failure Operation Other Operation 5.3% Vegetation /Animal Weather /Fire /Earthquake SAIDI = the cumulative amount of time the average customer is interrupted by sustained outages each year. 9
Causes of Repair Outages in Diamond Bar 2017 SAIFIChart Vegetation /Animal 2.0% 3rd Party 5.5% 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 14.5% Other Operation 13.4% Equipment Failure 39.2% 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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Back-up Slides Reliability Histories of Circuits Serving Diamond Bar Updated through Dec 2017
Average Reliability of 20 Circuits Serving Diamond Bar CitySummary 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 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 20 Circuits Serving Diamond Bar -- Total Customers: 29,293 113.8 0.8 1.3 135.0 1.0 1.1 89.4 1.1 0.6 40.2 0.4 0.2 17.6 0.2 0.2 21.2 0.2 0.1 30.7 0.4 0.0 109.7 1.2 0.5 3rd Party 3% 10% 7% 20% 13% 23% 15% 40% 13% 7% 2% 12% - - 85% - - - 26% 17% - 10% 6% 35% Equipment Failure 65% 40% 13% 74% 73% 16% 48% 27% 23% 39% 33% - 80% 44% 15% 60% 53% 28% 33% 36% - 48% 39% 12% Operation 8% 14% 7% 5% 8% 5% 21% 15% - 1% 1% - 20% 56% - 4% 6% 0% 3% 8% - 5% 13% 0% Other 7% 16% 40% 1% 6% 5% 16% 18% 51% 12% 25% 36% 40% 72% 24% 32% 45% 18% 25% 16% Vegetation/Animal 3% 1% 16% - - 51% 0% 0% - - 14% 7% 55% 4% 2% 1% Weather/Fire/Earthquake 14% 19% 17% - - - 0% 0% 13% 41% 40% 88% - 15% 15% 36% SCE SYSTEMWIDE 112.1 1.0 1.4 114.8 0.9 1.4 134.5 1.1 1.6 42.6 0.3 0.5 23.6 0.2 0.4 29.2 0.2 0.4 44.3 0.4 0.5 139.7 1.2 1.8 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
Reliability Histories for Individual Circuits Serving Diamond Bar - 1 of 5 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 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 AMBUSHERS(12KV) - Customers: 1,850 167.0 1.0-335.2 1.1-39.5 0.9 2.1 - - CircuitHistory - 9.4 0.0 5.9 0.1-15.3 0.1-3rd Party - - 29% 89% - - - 1 - Equipment Failure 100% 100% - 100% 98% - 71% 11% 100% - - - 100% 100% 100% 100% - 100% 100% - Operation - - - 0% 2% - - - Other ANTLER(12KV) - Customers: 1,519 74.5 0.2 1.0 47.8 0.6 4.6 59.2 1.1 1.0 - - - 3rd Party - - - 11% 87% 34% - - Equipment Failure - - - 89% 13% - - - Operation 7% 33% 12% 10% Other 14% 33% 100% - - 23% 88% 90% 100% - - - Vegetation/Animal 79% 34% - - - 43% - - BANDIT(12KV) - Customers: 2,094 357.5 1.3 1.9 1.3 0.1 0.1 48.1 1.1-12.5 0.0-68.6 0.1-3.4 0.0 84.5 0.2-3rd Party - - 29% 89% Equipment Failure 100% 97% 100% - - - 56% 8% - 62% 50% - 84% 52% - 100% 100% 82% 56% - Operation 0% 3% - 100% 100% 100% 15% 3% 16% 48% - - - 13% 30% - Other - 38% 50% - - 6% 13% - BOOTHILL(12KV) - Customers: 679 - - - 0.6 0.0-18.4 1.3-110.3 0.3 - - 110.3 0.3-3rd Party - - 100% 100% Equipment Failure - 100% 100% - - 100% 100% - Operation - - - 100% 100% - - - Other 15
Reliability Histories for Individual Circuits Serving Diamond Bar - 2 of 5 CircuitHistory 2 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th 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 BRAKEMAN(12KV) - Customers: 1,708 100.0 1.7 0.6 95.1 1.2 1.0 71.0 0.9 1.0 10.8 0.0 0.2 0.0-163.9 1.1-174.8 1.2-3rd Party - - - 40% 8% - 44% 66% - - 84% 90% - 79% 86% - Equipment Failure - - - 39% 85% 100% 50% 6% 1% 100% 100% 100% 100% - 15% 5% - 20% 9% - Operation 12% 5% - 21% 7% - 6% 28% - - 1% 5% - 1% 5% - Other 7% 34% 100% - 99% - - - Weather/Fire/Earthquake 81% 61% - - CHIME(12KV) - Customers: 2,156 133.3 2.0 2.0 6.7 0.1-161.6 1.3 3rd Party - - 51% - Equipment Failure - - 51% 21% Operation 40% 51% - 100% 100% - 5% 3% Other 60% 49% 49% - - - 44% 76% FINISHLINE(12KV) - Customers: 2,236 27.2 0.1 1.0 3.3 0.1 2.0 34.6 0.1-90.9 1.5 1.5 29.8 1.1 1.0 20.3 0.0 1.0 - - - 141.0 2.6 3.5 3rd Party - 50% 100% 28% Equipment Failure 83% 41% - 18% 4% - 91% 82% - - - 100% 100% 14% 1% - Operation - - - 82% 96% - 9% 18% 100% 100% - - - 21% 42% - Other - 100% - 28% Vegetation/Animal 17% 59% 100% - - 50% - - Weather/Fire/Earthquake - 100% 100% 100% - 64% 57% 43% GONDOLA(12KV) - Customers: 810 86.3 0.1 0.0 6.8 0.1-92.6 1.3-10.4 0.1 0.9 - - - 1.7 0.0-153.4 0.9 0.1 165.4 1.0 1.0 3rd Party - - 91% 22% - 100% 100% 100% - 6% 13% 87% Equipment Failure 99% 70% - 88% 98% - - - Operation 1% 30% 100% 12% 2% - 9% 78% - - 1% 1% - 1% 1% - Other - - - 100% 100% 1% 1% - Vegetation/Animal - - 99% 99% 100% 92% 85% 13% 16
Reliability Histories for Individual Circuits Serving Diamond Bar - 3 of 5 CircuitHistory 3 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 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 HEISMAN(12KV) - Customers: 2,210 198.7 1.1 1.0 339.3 2.9 1.0 125.2 0.2-1.6 0.0 - - - 79.7 1.0-81.3 1.0-3rd Party Equipment Failure 100% 100% - 100% 99% - 63% 51% - - 100% 100% - 98% 98% - Operation - - - 0% 1% - 37% 49% - 100% 100% - - 2% 2% - Other Vegetation/Animal - - 100% - - 100% - - HIGHNOON(12KV) - Customers: 2,292 27.6 0.0 0.4 - - - 81.1 1.1-157.0 1.7-108.4 1.0-124.2 1.1 0.0 - - - 389.6 3.8 0.0 3rd Party - - 17% 88% Equipment Failure 100% 100% 100% - - - 82% 10% - 98% 99% - 100% 100% - 20% 5% 74% 72% - Operation - - 1% 2% - 2% 1% 1% 5% 100% - - - 1% 2% 100% Other - - - 79% 89% 25% 26% - LAWMAN(12KV) - Customers: 2,108 54.2 1.0-87.5 1.1 2.0 146.1 3.1 0.0 61.5 1.4 - - 61.5 1.4-3rd Party 75% 96% 10% 32% Equipment Failure 17% 3% - 41% 3% - 68% 64% 100% - - - Operation 9% 2% - 26% 13% - 20% 4% Other - - - 33% 83% 100% 100% - - 100% 100% - Vegetation/Animal - 100% 3% 0% PANHANDLE(12KV) - Customers: 1,068 17.3 0.1-284.5 1.2 0.1 14.0 1.0 - - - 76.8 0.2 0.0 - - - 76.8 0.2 0.0 3rd Party - - 100% 99% Equipment Failure - - - 96% 95% 100% - 77% 28% 100% - - - 77% 28% 100% Operation 100% 100% - 4% 5% - 0% 1% - - - 23% 72% 23% 72% - Other 17
Reliability Histories for Individual Circuits Serving Diamond Bar - 4 of 5 CircuitHistory 4 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 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 PLACE(12KV) - Customers: 772 103.7 0.5 3.9 - - 1.0 177.4 1.2 0.2 - - - 19.1 1.0-116.6 1.2 1.1 122.3 2.5 0.1 257.9 4.7 1.2 3rd Party - - 26% - Equipment Failure - - 99% 94% 100% - - 99% 93% 100% - - - 45% 23% 91% Operation 100% 100% 24% - - - 1% 6% 100% 100% - 1% 7% - 24% 38% - 19% 44% - Other - - 25% - - - 76% 62% 100% 36% 33% 9% Vegetation/Animal - - 26% - - 100% - - SHOW(12KV) - Customers: 781 222.8 1.4 1.1 53.0 1.0 2.0 36.3 0.3-97.6 0.1-30.7 0.1 1.0 - - - 2.4 0.0-130.6 0.2 1.0 3rd Party - 100% 100% - - 75% 53% - Equipment Failure 99% 99% 7% - 100% 100% 100% - - 23% 39% 100% Operation 1% 1% - 100% 100% 50% 100% 100% - - 100% 100% - 2% 8% - Other Vegetation/Animal - - 93% - - 50% - - SUBWAY(12KV) - Customers: 32 - - 1.0 179.9 1.1-77.9 1.0 3rd Party Equipment Failure - - - 99% 96% - 99% 96% Operation - - - 1% 4% - 1% 4% Other - - 100% - TRAIN(12KV) - Customers: 1,717 188.6 1.2 4.6 301.2 2.7 1.4 13.2 0.0 2.1 157.3 1.0 1.0-157.3 1.0 1.0 3rd Party Equipment Failure 21% 7% - 97% 97% 100% 100% 100% Operation - - 18% 3% 3% - - - Other - - 40% - 100% - - - Weather/Fire/Earthquake 79% 93% 42% - - 100% 100% 100% - 100% 100% 100% 18
Reliability Histories for Individual Circuits Serving Diamond Bar - 5 of 5 CircuitHistory 5 2014 2015 2016 1st Qtr 2017 2nd Qtr 2017 3rd Qtr 2017 4th Qtr 2017 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 TRIDENT(12KV) - Customers: 1,214 388.2 1.7 1.9 247.8 2.3 1.1-88.5 1.6-51.9 1.0-140.4 2.6-3rd Party Equipment Failure 99% 95% 46% 100% 100% 11% - 100% 100% - 100% 100% - 100% 100% - Operation 1% 5% - - Other - - 54% - Vegetation/Animal - 89% - - UTOPIA(12KV) - Customers: 592 172.2 1.3 1.1 123.0 1.2 2.0 3.1 0.0 3rd Party - - - 96% 84% 50% - - Equipment Failure 44% 26% 9% - Operation - - - 4% 16% 50% 100% 100% Other 56% 74% 91% - WAHOO(12KV) - Customers: 2,129 55.2 0.1 3.0 417.4 2.2 2.0 148.0 2.0 2.0-1.0 - - - 68.5 1.0-68.5 1.0 1.0 3rd Party - - - 74% 55% 50% 42% 50% 50% - 100% 100% Equipment Failure 76% 48% - 26% 45% - - - Operation 24% 52% - 0% 0% - - - Other - - 67% - - - 57% 50% - - 100% 100% - 100% 100% - Vegetation/Animal - 50% - - Weather/Fire/Earthquake - - 33% - - - 1% 0% 50% - - - WOODVIEW(12KV) - Customers: 1,326 - - - 80.4 1.0-284.6 2.8 0.8 - - - 3rd Party Equipment Failure - - - 86% 95% - 34% 48% Operation - - - 14% 5% - 66% 52% Other 100% - - - 19