Circuit Reliability Review

Transcription

1 Circuit Reliability Review Walnut January 2018

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 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

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 Walnut CircuitList1 There are 10 circuits that serve Walnut 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers BREN(12KV) 1, COUPLER(12KV) 2, FUERTE(12KV) 1, GARTEL(12KV) 1, KERMIT(12KV) 2, MEDAL(12KV) 1, MILLENNIUM(12KV) SHOW(12KV) SPRINT(12KV) VALIANT(12KV) 1, Grand Total 15,563 7

8 Reliability History of Circuits Serving Walnut (No Exclusions) BarChart SAIDI (average minutes of sustained interruptions) Walnut SAIFI (average frequency of sustained interruptions) SCE SYSTEMWIDE MAIFI (average frequency of momentary interruptions) ** 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 Walnut 2017 SAIDIChart Other 2.3% Contributions to SAIDI by Outage Cause Weather /Fire /Earthquake 0.3% 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 Operation 15.3% Vegetation /Animal 6.6% Equipment Failure 55.0% 3rd Party 20.5% 3rd Party Equipment Failure Operation Other Vegetation /Animal Weather /Fire /Earthquake SAIDI = the cumulative amount of time the average customer is interrupted by sustained outages each year. 9

10 Causes of Repair Outages in Walnut 2017 SAIFIChart Other 0.4% Vegetation /Animal 2.4% Contributions to SAIFI by Outage Cause Weather /Fire /Earthquake 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 Operation 19.9% Equipment Failure 54.0% 3rd Party 23.4% 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

11 11

12 12

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

14 Average Reliability of 10 Circuits Serving Walnut 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 10 Circuits Serving Walnut -- Total Customers: 15, rd Party 3% 4% 11% 12% 17% 11% 2% 1% 13% 32% 4% 24% 26% 40% 26% 38% 67% 21% 23% 27% Equipment Failure 80% 72% 15% 66% 32% 37% 81% 88% 60% 48% 87% - 47% 51% 75% 57% 62% 39% 62% 26% 33% 55% 54% 42% Operation 3% 7% - 11% 27% 14% 7% 6% - 1% 6% - 53% 49% 25% 2% 8% - 9% 34% - 15% 20% 6% Other 1% 4% 44% 7% 11% 5% 9% 5% 27% 16% 2% - - 4% % 0% 2% Vegetation/Animal 10% 11% 30% 4% 14% 33% 0% 0% % 4% 17% 3% 2% - 7% 2% 9% Weather/Fire/Earthquake 3% 2% 0% 0% - 2% 0% 100% - 0% 0% 13% 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 Walnut - 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 BREN(12KV) - Customers: 1, CircuitHistory rd Party Equipment Failure 93% 95% 46% 89% 55% - 100% 100% 100% 100% 100% % 100% - 99% 87% 100% Operation 3% 4% - 11% 45% % 100% 1% 13% - Other 3% 2% 27% - Vegetation/Animal % - Weather/Fire/Earthquake COUPLER(12KV) - Customers: 2, rd Party Equipment Failure 67% 45% - 93% 79% 98% 83% 81% 100% 100% 100% % 6% - Operation % 21% 2% 17% 19% 100% 100% - 100% 100% 80% 94% - Other 1% 13% 42% - Vegetation/Animal 32% 42% 58% - Weather/Fire/Earthquake FUERTE(12KV) - Customers: 1, rd Party % % 3% Equipment Failure 99% 99% - 71% 10% - 86% 97% 100% % 100% - 100% 100% 100% 100% - Operation 1% 1% - 21% 75% Other % - Vegetation/Animal % 14% 100% - - Weather/Fire/Earthquake GARTEL(12KV) - Customers: 1, rd Party Equipment Failure % 1% - 100% 100% % 3% 4% 3% - Operation 25% 8% % % 100% % 2% - Other % 99% % Vegetation/Animal 75% 92% % - 95% 97% 100% % 94% 100% Weather/Fire/Earthquake 15

16 Reliability Histories for Individual Circuits Serving Walnut - 2 of 3 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 KERMIT(12KV) - Customers: 2, rd Party 32% Equipment Failure 100% 100% - 61% 17% - 99% 98% 68% % 100% - 98% 79% 100% % 47% 100% Operation % 81% - 1% 2% - 1% 9% 2% 21% - 6% 13% - 2% 16% - Other % 8% 2% 99% 91% % 17% - Vegetation/Animal 0% 0% % 94% 87% - 8% 20% - Weather/Fire/Earthquake MEDAL(12KV) - Customers: 1, rd Party 44% 51% 43% 2% 42% 40% - 0% 0% 61% 96% 98% 100% 45% 53% 42% Equipment Failure 2% 1% - 82% 29% 20% 91% 99% 34% % 1% - 95% 92% 29% 1% 1% - 38% 33% 13% Operation 7% 25% - 16% 29% - 0% 0% - 41% 97% - 96% 99% 100% 4% 8% 15% 12% 12% Other - 20% % 10% - 5% Vegetation/Animal 1% 1% 57% % 1% 0% - - 3% 2% - 1% 1% - Weather/Fire/Earthquake 45% 22% 8% 1% - 59% 3% 100% - 2% 0% 28% MILLENNIUM(12KV) - Customers: rd Party % 32% 2% - - Equipment Failure 91% 95% 4% 51% 37% 2% 100% 100% 27% % 100% 100% 100% - Operation 9% 5% - 0% 0% 47% - - Other % - 73% Vegetation/Animal % 32% 49% - - Weather/Fire/Earthquake SHOW(12KV) - Customers: rd Party - 100% 100% % 53% - Equipment Failure 99% 99% 7% - 100% 100% 100% % 39% 100% Operation 1% 1% - 100% 100% 50% 100% 100% % 100% - 2% 8% - Other Vegetation/Animal % % - - Weather/Fire/Earthquake 16

17 Reliability Histories for Individual Circuits Serving Walnut - 3 of 3 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 SPRINT(12KV) - Customers: rd Party - 100% - 100% Equipment Failure 68% 3% 33% 68% 100% % 100% 100% 100% - Operation 32% 97% 2% 1% Other % 31% Vegetation/Animal % % - - Weather/Fire/Earthquake VALIANT(12KV) - Customers: 1, rd Party % 37% 21% 19% - Equipment Failure 90% 97% 28% 94% 66% 100% % 100% 46% 63% 100% 86% 42% 100% 72% 65% 100% Operation 10% 3% - 6% 34% - 14% 58% - 7% 16% - Other % - Vegetation/Animal Weather/Fire/Earthquake