Circuit Reliability Review

Transcription

1 Circuit Reliability Review Ridgecrest 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 RIDGECREST District CityList1 BORON CALIFORNIA CITY CANTIL CHINA LAKE ACRES EDWARDS AFB FURNACE CREEK HOMEWOOD CANYON-VALLEY WELLS INYOKERN JOHANNESBURG NORTH EDWARDS PEARSONVILLE RANDSBURG RIDGECREST SEARLES VALLEY DEATH VALLEY TIMBISHA SHOSHONE TRIBE 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 Ridgecrest CircuitList1 There are 13 circuits that serve Ridgecrest 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers BOWMAN(12KV) 2, BURROUGHS(4.8KV) CRUMVILLE(12KV) DEETER(12KV) 2, DRIVE INN(12KV) GREGORY(12KV) 1, HILDRETH(4.8KV) JACK RANCH(12KV) 1, KENNEDY(33KV) MIRACLE CITY(4.8KV) RICKOVER(33KV) ROCKET TOWN(12KV) 2, SHANGRILA(12KV) 1, Grand Total 14,789 7

8 Reliability History of Circuits Serving Ridgecrest (No Exclusions) BarChart SAIDI (average minutes of sustained interruptions) Ridgecrest 0.0 SAIFI (average frequency of sustained interruptions) SCE SYSTEMWIDE ** Exclusions are days which utilities are allowed to MAIFI (average frequency of momentary interruptions) 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 0.0 8

9 Causes of Repair Outages in Ridgecrest 2017 SAIDIChart 3rd Party 1.6% 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 46.8% Equipment Failure 25.1% Operation 23.6% 3rd Party Equipment Failure Operation Other Vegetation /Animal Vegetation /Animal 2.6% Other 0.4% 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 Ridgecrest 2017 SAIFIChart 3rd Party 2.0% 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 59.1% Equipment Failure 26.2% Operation 10.8% Other 0.1% Vegetation /Animal 1.8% 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 Ridgecrest Updated through Dec 2017

14 Average Reliability of 13 Circuits Serving Ridgecrest 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 13 Circuits Serving Ridgecrest -- Total Customers: 14, rd Party 2% 5% - 1% 4% 6% 0% 0% 4% - - 0% 1% - 26% 44% 0% 2% 2% 0% Equipment Failure 40% 24% 45% 40% 22% 47% 64% 41% 0% 55% 30% - 54% 83% - 13% 4% - 1% 1% - 25% 26% - Operation 1% 1% - 10% 19% 0% 7% 24% 12% 29% 41% - 42% 16% - 14% 4% - 73% 55% 23% 24% 11% 7% Other 54% 68% 10% 31% 30% 30% 29% 35% 53% 1% 1% 100% 2% 0% 100% - 77% 0% 0% 91% Vegetation/Animal 0% 0% 0% 16% 24% 17% % 15% 29% - 2% 1% % 2% - Weather/Fire/Earthquake 3% 2% 45% 1% 1% % % 92% 100% % 59% 2% 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 Ridgecrest - 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 BOWMAN(12KV) - Customers: 2, CircuitHistory rd Party 12% 20% - 0% 0% 100% Equipment Failure 74% 24% - 52% 22% - 16% 14% 0% 57% 27% - 97% 99% - 2% 0% 19% 27% - Operation 5% 2% - 4% 9% - 84% 86% - 43% 73% 2% 0% 8% 3% - Other 9% 55% % - 100% - 100% % Vegetation/Animal % 69% % % 1% % 0% - Weather/Fire/Earthquake % 99% 100% % 70% 7% BURROUGHS(4.8KV) - Customers: rd Party Equipment Failure Operation 100% % Other 100% 100% 100% - Vegetation/Animal Weather/Fire/Earthquake CRUMVILLE(12KV) - Customers: rd Party 100% Equipment Failure % 1% 50% 100% 100% Operation % 99% Other 100% 100% % - - Vegetation/Animal Weather/Fire/Earthquake DEETER(12KV) - Customers: 2, rd Party % 46% - 7% 18% - Equipment Failure 86% 14% - 34% 35% 21% 11% - Operation 2% 2% - 79% 65% 1% 100% 100% 100% 100% - 66% 65% - 72% 54% - 73% 71% - Other 12% 85% % - - Vegetation/Animal % 35% Weather/Fire/Earthquake 15

16 Reliability Histories for Individual Circuits Serving Ridgecrest - 2 of 4 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 DRIVE INN(12KV) - Customers: rd Party Equipment Failure 63% 50% 1% 0% - 31% 18% - 90% 97% % 41% - Operation % 100% Other % % 100% 10% 3% % 1% - Vegetation/Animal 37% 50% 48% % 82% % 58% - Weather/Fire/Earthquake GREGORY(12KV) - Customers: 1, rd Party Equipment Failure 84% 9% 81% 65% % 100% 83% 86% - Operation 1% 6% 19% 35% % 100% - 17% 14% - Other 15% 85% - - Vegetation/Animal % 100% Weather/Fire/Earthquake HILDRETH(4.8KV) - Customers: rd Party Equipment Failure % 100% Operation 100% % Other 100% 100% 100% - Vegetation/Animal Weather/Fire/Earthquake JACK RANCH(12KV) - Customers: 1, rd Party % 1% % 55% 7% 37% - Equipment Failure 1% 0% 21% 9% 1% 33% 37% 24% - 91% 88% 86% 45% - 100% 100% - 83% 49% - Operation 1% 0% - 17% 40% - 9% 25% 21% Other 28% 89% 21% 65% 57% 33% 54% 50% 60% % % 100% Vegetation/Animal % 0% 33% % 13% - 100% 100% % 14% - Weather/Fire/Earthquake 70% 11% 59% - 19%

17 Reliability Histories for Individual Circuits Serving Ridgecrest - 3 of 4 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 KENNEDY(33KV) - Customers: rd Party Equipment Failure Operation Other 100% 100% 50% - Vegetation/Animal % - 100% Weather/Fire/Earthquake MIRACLE CITY(4.8KV) - Customers: rd Party Equipment Failure % 100% - 100% 100% % 53% - Operation 100% 100% % 76% 47% 100% Other 100% 100% 100% - Vegetation/Animal Weather/Fire/Earthquake RICKOVER(33KV) - Customers: rd Party 100% % Equipment Failure % 100% % 100% 100% 100% - Operation Other Vegetation/Animal Weather/Fire/Earthquake ROCKET TOWN(12KV) - Customers: 2, rd Party % 10% - 0% 0% Equipment Failure 92% 54% 67% 32% 15% - 100% 99% - 100% 100% - 100% 100% - 100% 100% 100% 100% - Operation % 23% - 0% 0% Other 8% 46% - 57% 50% 100% 0% 0% % % Vegetation/Animal Weather/Fire/Earthquake % 3% 2%

18 Reliability Histories for Individual Circuits Serving Ridgecrest - 4 of 4 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 SHANGRILA(12KV) - Customers: 1, rd Party 1% 0% - 0% 0% Equipment Failure 44% 5% 53% 75% 53% 83% - 100% 100% 5% 5% - Operation % 0% - 100% 100% 100% 100% % 91% - Other 33% 87% - 2% 0% 100% 100% - - 2% 5% - Vegetation/Animal % 46% 17% - - Weather/Fire/Earthquake 22% 8% 47%