Reliability Report -- 1999 - Pennsylvania Public Utility Commission

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Citizens’ Electric Company Citizens’ has a relatively small operating area with an electric system consisting of one distribution substation and nine distribution feeder lines. In 2005, Citizens’ system reliability performance was within the Commission established benchmarks and standards. Citizens’ CAIDI of 116 minutes was 52 minutes longer than the 2004 CAIDI, but only 11 minutes above the benchmark of 105 minutes. The 2005 SAIFI was an average of 0.1 outages per customer, compared to the previous year’s SAIFI of 0.39. For the first year since 2002, the outage frequency was better than the rolling 12-month standard of 0.27 and 0.1 below the benchmark. Citizens’ continued deployment of an Automatic Meter Reading system across its service territory. The project was completed in February 2006. In addition to the meter reading functionality, this system will enable Citizens’ to verify service outages and perform quicker assessments of overall system conditions during a major event. With the system fully operational, Citizens’ plans to redirect a significant part of the labor previously spent reading meters to maintenance and inspection activities. The calculations for the 2005 reliability indices exclude outage data relating to four major events, which were approved by the Commission: April 30, 2005: equipment failure during extended rain event; 1,153 customers affected; 92 interruption minutes excluded. May 14, 2005: off right-of-way tree contacted a 3-phase line during a thunderstorm; 1,252 customers affected; 51 interruption minutes excluded. November 6, 2005: strong winds damaged a 3-phase line; 1,252 customers affected; 16 interruption minutes excluded. November 10, 2005: Strong winds caused phase wires to contact; 1,252 customers affected; 50 interruption minutes excluded. On August 11, 2005, Citizens’ Petition for Appeal of Staff Determination Denying Request for Exclusion of Major Event was denied by the Commission, regarding the exclusion of a service outage occurring on April 25, 2004, and granted for the purpose of verifying the recalculation of Citizens’ historic reliability benchmarks. Citizens’ requested that, if it is the Commission’s policy to deny major event exclusion status for distribution equipment failures, that it be permitted to recalculate its base year historic reliability benchmarks accordingly. Docket No. P-00042127. Citizens’ has submitted additional information to Electric Service Reliability in Pennsylvania 45
determine the type of each event excluded from the recomputation. Upon Commission review of this information, a corrected level of historic reliability benchmarks will be established, if deemed appropriate. Citizens’ experienced a total of 667 customer interruptions in 2005, with a total duration of 77,100 minutes, excluding major events, which was 52.0% lower than that which was reported last year. The following graphs depict trends in the duration of service interruptions for the Citizens’ system from 1994 to 2005, and for the four quarters of 2005 and the first quarter of 2006, compared to the established benchmarks and standards. Citizens' Electric Company Customer Average Interruption Duration Index (CAIDI) 200 180 160 Rolling 12-Month Standard 140 120 Benchmark Minutes 100 80 60 40 20 0 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 46 Pennsylvania Public Utility Commission
Page 1 and 2: ElectricService Reliabilityin Penns
Page 3 and 4: EXECUTIVE SUMMARY The Electricity G
Page 5 and 6: TABLE OF CONTENTS SECTION 1 - INTRO
Page 7 and 8: Subsequently, on December 16, 1999,
Page 9 and 10: included is the data used in calcul
Page 11 and 12: the reliability performance of the
Page 13 and 14: Utility Specific Performance Data A
Page 15 and 16: As seen here, CAIDI improved from t
Page 17 and 18: Allegheny Power System 2005 Outage
Page 19 and 20: Duquesne Light Company Customer Ave
Page 21 and 22: The graph below shows the distribut
Page 23 and 24: Metropolitan Edison Company Custome
Page 25 and 26: Metropolitan Edison Company System
Page 27 and 28: the SAIFI benchmark was increased f
Page 29 and 30: The rolling 12-month averages for t
Page 31 and 32: 14.0% of total incidents, 18.5% of
Page 33 and 34: Pennsylvania Power Company Customer
Page 35 and 36: Pennsylvania Power Company System A
Page 37 and 38: In 2005, PECO’s customers experie
Page 39 and 40: PECO Energy Company System Average
Page 41 and 42: PECO Energy Company 2005 Outage Cau
Page 43 and 44: PPL Electric Utilities Corporation
Page 45 and 46: PPL’s SAIFI was below the benchma
Page 47 and 48: UGI Utilities, Inc. Customer Averag
Page 49: UGI Utilities, Inc. System Average
Page 53 and 54: Citizens' Electric Company System A
Page 55 and 56: Pike County Light & Power Company P
Page 57 and 58: Pike County Light & Power Company C
Page 59 and 60: For 2003 and 2004, SAIFI has been a
Page 61 and 62: November 28, 2005: severe weather e
Page 63 and 64: Wellsboro Electric Company System A
Page 65 and 66: SECTION 4 - INSPECTION AND MAINTENA
Page 67 and 68: In addition to monitoring the relia

Reliability Report -- 1999 - Pennsylvania Public Utility Commission

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