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Customer Oriented Reliability

Customer Oriented Reliability. Traditional Reliability Indexes Measure System Averages. CAIDI Measures Duration SAIFI Measures Outage Frequency SAIDI Measures Accumulated Time Off MAIFI Measures Momentary Interruptions. M L G W’s 2003 Reliability Performance. SAIFI 1.41 events

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Customer Oriented Reliability

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  1. Customer Oriented Reliability

  2. Traditional Reliability Indexes Measure System Averages CAIDIMeasures Duration SAIFIMeasures Outage Frequency SAIDIMeasures Accumulated Time Off MAIFIMeasures Momentary Interruptions

  3. M L G W’s 2003 Reliability Performance SAIFI1.41 events CAIDI169 minutes SAIDI238 minutes

  4. CUSTOMERSEXPERIENCINGMULTIPLEINTERRUPTIONS

  5. What Reliability Do Customers Demand ?? “Your most unhappy customers are your greatest source of learning.” -Bill Gates

  6. Analyzed Three Years of Customer Reliability Complaints • Over 600 Complaints about Outage Frequency • Over 250 Complaints about Outage Duration

  7. Customer Oriented Reliability Prevent Customers from Experiencing Over 3 Interruptions Per Year Prevent Outage Events Over 10 Hours in Duration

  8. Strategic Targeting of Assets forReliability

  9. Reliability Strategies • Effective line clearance (Hybrid 3-4-5 Cycle) • Reduction in recurring events • Strategically address root causes • Target long-duration outages

  10. Tree Trimming • Analyzed cycle and emergency trimming • Hybrid 3-4-5 Plan

  11. Unfused Taps • Isolate Interruptions to Small Numbers of Customers on Laterals by Installing Line Fuses

  12. Continue aggressive cable replacement for PE cable Replace PILC get-away cable that has reached end-of-life Retrofitting Underground Cable

  13. Reclosers & Sectionalizers 35 new reclosers • Reduce number of customers interrupted • Save wear and tear on station breaker • Protect cable getaway • Speeds troubleshooting

  14. Under grounding circuits Reduce exposure to trees, vehicles, & lightning by under grounding high-risk segments of circuits.

  15. Reliability Goals YTD February, 2004 Customers with more than 3 outages: 69 Customers with 10+ hours outages: 22

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