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Resilience in Electric Infrastructure: Lessons from the 2004-2005 Hurricane Season

This workshop details the experiences of Gulf Power Company during the 2004-2005 hurricane season, focusing on damage assessments, restoration strategies, and future plans for enhancing electrical infrastructure. Key topics include system damages due to storms, proactive preparation strategies, and the importance of effective communication and resource management. The session emphasizes the significance of vegetation management, routine inspections, and ongoing development to mitigate the impact of future hurricanes. Attendees will gain insights into the successful practices and lessons learned from this challenging period.

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Resilience in Electric Infrastructure: Lessons from the 2004-2005 Hurricane Season

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Presentation Transcript

  1. Electric Infrastructure Workshop Gulf Power Company January 23, 2006

  2. 2004 – 2005 Hurricane SeasonWho We Are • Our size • Our location and geography • Our company affiliation • Our communication system

  3. 2004 – 2005 Hurricane SeasonWhat We Experienced • Damage to our system • Transmission • Substation • Distribution • Hurricane T&D Material Summary- slide 16

  4. 2004 – 2005 Hurricane SeasonWhat We Experienced • Damage to our system by • Wind • Storm Surge • Trees • Debris • Debris Removers • Customers • Coastal Damageslides 17 - 26 • Hurricane Ivan Mapsslides 27 and 28

  5. 2004 – 2005 Hurricane SeasonWhat We Did • Prior to Hurricane Season • Review and refine the restoration process • Critiques after each storm • Updates of contact information • Lessons learned from other utilities • Communicate storm assignments to employees • Prepare storm kits for each substation • Ensure adequate material stocks can meet needs • Negotiate and confirm contracts with vendors

  6. 2004 – 2005 Hurricane SeasonWhat We Did • Approaching Storm • Execute contracts • Materials • Food/Lodging/Staging/Transportation/Fuel • Electrical and tree contractors • Communicate with customers and local / state officials • Conference call with Southeastern Electric Exchange members

  7. 2004 – 2005 Hurricane Season What We Did • Post Storm • Decentralize the restoration process • Decision making ability is at the substation level • Distribution assessments and restoration begin as soon as it is safe to report to work • Draw upon Southern Company affiliates for assistance as needed • Perform “sweeps” – slide 29

  8. 2004 – 2005 Hurricane SeasonWhat Is In The Future • Underground • Help with vegetative management in right of way • Evolving specifications • Increased data from our mapping system • Distribution Assessment Teams

  9. 2004 – 2005 Hurricane SeasonWhat Is In The Future • Vegetation Management • Pole Inspections • maximize plant facility life • gather information necessary to manage and prioritize needs and resources • minimize unscheduled or emergency maintenance by performance of preventative maintenance • NESC and Specifications

  10. Vegetation Management • Work performed by contractors • Clearance at the time of pruning based on NESC requirements • Program performance indicators • Vegetation SAIDI • Customer satisfaction - justified PSC complaints on tree trimming • Public Safety – number of documented accidents related to vegetation

  11. Vegetation Management (cont.) • Program utilizes a mix of maintenance pruning on entire circuits, targeted spot pruning on portions of circuits, and spot pruning in response to customer call ins. • Annual work plans developed from Forestry Services field inspection data, outage data, customer call ins, and field engineering reports • 100% of transmission field inspected each year – all hazardous situations corrected (i.e., leaning or dead trees)

  12. Distribution Line Inspections • 249,802 wooden poles as of December 2005. • 10 year inspection cycle for all distribution poles • Gulf started its 2nd inspection cycle in 2003. • All poles are inspected using one of the following inspection types: • Visual • Sound and Bore • Partial Excavation • Full Excavation

  13. Transmission Line Inspections • 12 year inspection cycle for all transmission poles and structures • Aerial patrol of system at least 4 times per year • All structures are inspected every 6 years using one of the following inspection types: • Ground Inspection • Wood Ground Line Treatment Inspection • Steel Ground Line Treatment Inspection • Comprehensive Walking Inspection • Comprehensive Aerial Inspection • Routine Aerial Patrol

  14. National Electric Safety Code • Purpose • The NESC is composed of 8 sub-committees, an executive sub-committee, and an accredited standards committee • Member Representation • A new revision is published every 5 years. • Recognized Authority

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