Circuit Reliability Review

Transcription

1 Circuit Reliability Review Kings District 4 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 SAN JOAQUIN District CityList1 ARMONA COUNTY OF TULARE DELANO DUCOR EARLIMART EAST PORTERVILLE EXETER FARMERSVILLE GOSHEN HANFORD IVANHOE KINGS COUNTY LEMON COVE LINDSAY MCFARLAND PIXLEY POPLAR-COTTON CENTER PORTERVILLE RICHGROVE SPRINGVILLE STRATHMORE TERRA BELLA THREE RIVERS TIPTON VISALIA WOODLAKE WOODVILLE CITY OF TULARE TULE RIVER INDIAN 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 Kings District 4 CircuitList1 There are 4 circuits that serve Kings District 4 1 Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers GEE BEE(12KV) 1, IONA(12KV) 2, LEMOORE(12KV) 1, SQUADRON(12KV) 1, Grand Total 7,623 7

8 Reliability History of Circuits Serving Kings District 4 (No Exclusions) BarChart SAIDI (average minutes of sustained interruptions) Kings District 4 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 Kings District SAIDIChart 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 38.4% Other 15.5% 3rd Party 28.9% Equipment Failure 16.3% 3rd Party Equipment Failure Operation Other Vegetation /Animal Weather /Fire /Earthquake Vegetation /Animal 0.0% Operation 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 Kings District 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 Weather /Fire /Earthquake 17.5% Other 33.3% 3rd Party 42.7% 3rd Party Equipment Failure Operation Other Vegetation /Animal Weather /Fire /Earthquake Operation 1.9% Equipment Failure 4.6% 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 Kings District 4 Updated through Dec 2017

14 Average Reliability of 4 Circuits Serving Kings District 4 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 4 Circuits Serving Kings District 4 -- Total Customers: 7, rd Party 21% 15% 3% 33% 17% 3% 14% 16% 48% 13% 16% - 24% 45% 29% 35% 63% 14% % 43% 13% Equipment Failure 52% 24% 45% 17% 13% 10% 58% 68% 17% % 38% 13% 4% 2% - 35% 7% 37% 16% 5% 15% Operation 25% 60% 45% 17% 32% - 1% 2% - 0% 0% % 1% 1% - 65% 93% 17% 1% 2% 17% Other 1% 1% 7% 7% 3% 50% 26% 14% 35% 87% 84% 34% 7% 17% 19% 0% 0% 66% % 16% 33% 42% Vegetation/Animal % 8% 11% - - Weather/Fire/Earthquake % 27% 26% 1% 1% % % 34% 20% % 17% 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 Kings District 4-1 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 GEE BEE(12KV) - Customers: 1, CircuitHistory rd Party % 0% - 7% 11% 87% % 90% 33% 100% 100% 81% 85% 20% Equipment Failure 98% 50% 77% 98% 91% 45% 89% 85% 3% 10% 94% 92% 68% 1% 2% 26% Operation 2% 50% 23% 2% 8% - 3% 4% - 0% 0% % % 8% 32% 0% 0% 40% Other - - 1% 1% 13% 100% 100% % 0% 0% 18% 13% 13% Vegetation/Animal Weather/Fire/Earthquake - 55% - - IONA(12KV) - Customers: 2, rd Party 42% 22% - 44% 12% - 3% 9% 1% 100% 100% 10% 44% 18% % 56% 15% Equipment Failure 21% 17% 37% % 89% 100% 100% 100% % 13% 14% Operation 37% 61% 63% % 1% % 2% - 100% 100% - 1% 1% - Other % 10% 46% % 82% - 70% Vegetation/Animal % 1% 31% - - Weather/Fire/Earthquake % 78% 23% - 88% 54% 33% 29% - LEMOORE(12KV) - Customers: 1, rd Party % 38% 100% Equipment Failure 91% 76% - 37% 10% - 3% 5% 28% 20% - 8% 7% 8% 3% - Operation % 90% - 0% 0% % 2% 1% 1% - Other 9% 24% % 66% 57% - 100% 100% - 72% 80% % 20% 68% 71% Vegetation/Animal Weather/Fire/Earthquake % 91% 100% % 28% 29% SQUADRON(12KV) - Customers: 1, rd Party % 47% 59% 10% - 100% 100% 62% 76% - Equipment Failure 35% 17% - 1% 0% - 90% 90% 70% % 100% % 2% - Operation 65% 83% - 14% 5% - 1% 1% % 100% - 1% 11% - Other % % % 100% 100% 34% - 26% 11% 34% Vegetation/Animal % 34% 10% - - Weather/Fire/Earthquake % 1% 24% 10% 9% % % 15