The URL can be used to link to this page

Home My WebLink About20130319Major Event Report.pdfROCKY MOUNTAIN POWER A DIVISION OF PACIFICORP 201 South Main, Suite 2300 7013 MAR 19 AM 10: 18 Salt Lake City, Utah 84lll March 19, 2013 1DthJ UTtLIT:S CO\4MSSO VIA OVERNIGHT DELIVERY Jean D. Jewell Commission Secretary Idaho Public Utilities Commission 472 W. Washington Boise, ID 83702 Re: ELECTRIC SERVICE RELIABLITY - MAJOR EVENT REPORT Dear Ms. Jewell: Please find attached for filing Rocky Mountain Power's March 14, 2013 Major Event Report, also provided as an attachment is a Customer Impact analysis providing the number of customers impacted by the outage and the customer restoration intervals. Informal inquiries may be directed to Ted Weston, Idaho Regulatory Manager at (801) 220- 2963. Very truly yours, Oeffry K. ~en L~)ff /d Vice President, Regulation & Government Affairs Enclosures Li Report to: Idaho Public Utilities Commission Electric Service Reliability - Major Event Report ID-13-1 Event Date(s): Date Submitted: Primary Affected Location(s): Exclude from Performance Reports: Report Prepared by: Report Approved by: January 14, 2013 March 19, 2013 Rexburg Yes Diane DeNuccio TJ Gob, Heide Caswell Event Description: On January 14, 2013, a loss of supply event occurred to a transmission line between Ricks Junction and St. Anthony; this was due to a broken conductor, and resulted in loss of power to Rocky Mountain Power ("Company") customers served by Moody, Canyon Creek, Newdale, St. Anthony, Ashton, Targhee, Sugar City, and Rexburg substations. Twenty-eight circuits experienced sustained interruptions, affecting 47% of the Company's Rexburg customers (20% of its Idaho customers). Rocky Mountain Power is requesting the designation of this event and the consequences thereof to be classified as a major event and excluded from its performance results due to the day's performance, which exceeded the Company's 2013 major event threshold of 1,114,149 customer minutes lost in a 24-hour period'. Idaho SAID! Minutes Excluded 42.66 Sustained Customers Off 14,840 Customer Minutes Lost 3,239,233 Sustained Interruptions 32 Resources Utilized: Troubleman/Assessors 5 Local crewmembers 12 Substation crewmembers 5 Restoration: Among the affected customers were some of the Company's troublemen, who immediately responded and patrolled the line. Broken conductor was discovered, which transmission crews repaired and power was step-restored to minimize cold load pickup issues. Most of the affected customers were restored within about four hours. 'In docket PAC-E-04-07, the company and commission agreed that determination of major events will be made by applying IEEE Standard 1366-2003, wherein a statistical outlier for these extreme events is based on state daily SAIDI thresholds; the 2013 calculated Idaho SAIDI is 14.67 minutes, which equates to a threshold of 1,114, 149customer minutes interrupted in a 24 hour period. Idaho Major Event January 14, 2013 —4.—Customers Out - - - Cumulative CIVIL - 24-hour CML Threshold 3,500,000 16,000 14,000 3,000,000 12,000 2,500,000 10,000 2,000,000 2 0 8,000 1,500,000 6,000 1,000,000 4,000 500,000 2,000 0 -. 0 1/14/13 0:00 1/14/13 6:00 1/14/13 12:00 1/14/13 18:00 1/15/13 0:00 Estimated Major Event Cost: This event did not generate significant incremental costs to the company. SAIDI, SAIFI, CAIDI Report: Attached Peak Customers Out 14,733 to C'.' U) C') C . .2 _____________ It LL - 2 of2 PacifiCorp Major Event Report Customer Analysis Idaho 0111412013 to 01/14/2013 0111412013 through 0111412013 Customer Analysis Customers Restored by Intervals Major Event Only I I I Sustained I PacifiCorp Major % I I I i Customer I Events Report Sustained Sustained j Number of Average I is Restored I Customer Analysis Customer Customers i Sustained Customer <=5 >5min <3 > 3 hrs >24 hrs > 48 hrs > 72 hrs >=96 in 3 Hours I s Off Off CIVIL Interruptions Count min hrs <= 24 hrs <48 hrs <72 hrs <96 hrs hrs PS4 SAIDII SAIFII CAIDI IPacifiCorp I 14,8401 1% I 3,239,2331 321 1,863,5101 01 1061 14,7341 01 01 01 01 1% I 1.741 0.011 2181 Rocky Mountain Power I 14,8401 1% I 3,239,2331 321 1,079,6851 01 1061 14,7341 01 01 01 01 1% I 3.001 0.011 2181 Ildaho I 14,8401 20% I 3,239,2331 321 75,9341 01 1061 14,7341 01 01 01 01 1% I 42.661 0.201 2181 MONTPELIER 0 0% 0 1 10,056 0 0 0 0 0 0 0 0% 0.00 0.00 REXBURG 14,836 47% 3,239,093 29 31,375 0 102 14,734 0 0 0 0 1% 103.238 0.473 218 SHELLEY 4 0% 141 2 25,800 0 4 0 0 0 0 0 100% 0.005 0.000 35 Customer Interrupted by Date 0111412013 through 01114/2013 Customers Restored by Intervals Date Sustained Customer s Off % Sustained Customers Off CML Number of Sustained Interruptions Average Customer Count <=5 min > 5 mm <3 hrs > 3 hrs <= 24 hrs > 24 hrs <48 hrs > 48 hrs <72 hrs >= 72 hrs <96 hrs >=96 hrs 70 Sustained Customer s Restored in 3 Hours PS4 1/1412013 14,840 20% 3,239,233 32 75,934 0 1061 14,734 0 0 0 0 1% FY2014 Major Event Final Report 2013-01-14 ID AlLxlsxCustomer Analysis 1 3/18/2013 PacifiCorp Major Event Report SSM Analysis Idaho 0111412013 to 0111412013 Event 01/14113 through 01114113 Month 01101113 through 01131113 YTO FY2014 01101113 through 01131113 Major Events Included Major Events Excluded Major Events Included Major Events Excluded Major Events Included Major Events Excluded PacifiCorp Major Events Report SSC by Op Area SAUDI SAIFI CAIDI SAIDI SAIFI CAIDI SAIDI SAIFI CAIDI SAUDI SAIFI CAIDI SAUDI SA IFI CAIDI SAIDI SAIFI CAIDI PacifiCorp I 2.661 0.011 2191 0.901 0.001 2211 10.351 0.111 941 8.491 0.101 841 10.351 0.111 941 8.491 0.101 841 I Rocky Mountain Power I 4.421 0.021 2241 1.361 0.011 2391 11.451 0.101 1141 8.381 0.091 981 11.451 0.101 1141 8.381 0.091 981 Ildaho I 42.661 0.201 2181 I I I 56.981 0.341 1671 14.331 0.151 981 56.981 0.341 1671 14.331 0.151 981 MONTPELIER 0.00 0.00 24.57 0.28 89 24.57 0.28 89 24.57 0.28 89 24.57 0.28 89 PRESTON 5.22 0.02 341 5.22 0.02 341 5.22 0.02 341 5.22 0.02 341 REXBURG 103.24 0.47 218 121.14 0.65 187 17.90 0.17 103 121.14 0.65 187 17.90 0.17 103 SHELLEY 0.01 0.00 35 8.81 0.08 104 8.80 0.08 104 8.81 0.08 104 8.80 0.08 104 SMITHFIELD 15.87 1.00 16 15.87 1.00 16 15.87 1.00 16 15.87 1.00 16 FY2014 Major Event Final Report 2013-01-14 ID AII.xIsxSSC by Op Area 2 3/18/2013 - PacifiCorp Major Event Report SSM Analysis Idaho 0111412013 to 0111412013 Event 01114113 through 01114113 Month 01101113 through 01131113 YTD FY2014 01101/13 through 01131113 Major Events Included I Major Events Excluded Major Events Included I Major Events Excluded Major Events Included Major Events Excluded PacifiCorp Major Events Repast SSC by State SAIDU SAIFI CAIDI SAIDI SAIFI CAIDI SAIDI SAIFI CAIDI SAUDI SAIFI CAIDI SAUDI SAIFU CAIDI SAUDI SAIFI CAIDI I PacifiCorp I 2.661 0.011 2191 0.901 0.001 2211 10.351 0.111 941 8.491 0.101 841 10.351 0.111 941 8.491 0.101 841 I Rocky Mountain Power I 4.421 0.021 2241 1.361 0.011 2391 11.451 0.101 1141 8.381 0.091 981 11.451 0.101 1141 8.381 0.091 981 Ildaho I 42.661 0.201 2181 1 I I 56.981 0.341 1671 14.331 0.151 981 56.981 0.341 1671 14.331 0.151 981 MONTPELIER 0.00 0.00 3.25 0.04 89 3.25 0.04 89 3.25 0.04 89 3.25 0.04 89 PRESTON 0.56 0.00 341 0.56 0.00 341 0.56 0.00 341 0.56 0.00 341 REXBURG 42.66 0.20 218 50.05 0.27 187 7.40 0.07 103 50.05 0.27 187 7.40 0.07 103 SHELLEY 0.00 0.00 35 2.99 0.03 104 2.99 0.03 104 2.99 0.03 104 2.99 0.03 104 SMITHFIELD 0.13 0.01 16 0.13 0.01 16 0.13 0.01 16 0.13 0.01 16 FY2014 Major Event Final Report 2013-01-14 ID AII.xIsxSSC by State 3 3/18/2013