Agenda

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Constructing, Operating and Maintaining Underground Distribution Systems  

Session One: Tuesday, October 20

Introduction
  • Course Objectives & Subject Matter Outline
  • History of Underground Systems
  • Advantages & Disadvantages of Underground Systems

Policy and Service Guidelines – selected topics
  • Cost Recovery Methods 
  • Easements/Point of Ownership
  • OH to UG Conversion
  • Harmonics
  • Policy Development Discussion Example (Lake Wobegon)

Planning & Design
  • Load Characteristics
  • Planning Criteria
  • Load Estimating & Diversity
  • Subdivision System Design Criteria & Techniques
  • Reliability Considerations
  • Commercial Service Considerations
  • Sectionalizing/Fault Interruption Options
  • Planning, Design, & Layout Discussion

    • Residential / Commercial Subdivision

    • Industrial Subdivision

Session Two: Wednesday, October 21

Planning & Design (continued)
  • Transformer Design Considerations – Loss Evaluation
  • Equipment Installation Locations

Cable Design, Application & Failure Modes

  • Cable Theory & Cable Construction
  • Conductor/Insulation Types
  • Mechanical/Electrical Properties
  • Cable Replacement/Life Extension
  • Cable Pulling Example

Session Three: Thursday, October 22

Cable Design, Application & Failure Modes (continued)

  • Cable failure modes – guest speaker

Terminations & Splice Design & Operation - 200 A & 600 A

  • Voltage Stress Relief
  • Terminations
  • Splices
  • Load break Connections – 200A
  • Deadbreak Connections – 600A

Inspection/Prevention Maintenance 

Session Four: Tuesday, October 27

Inspection/Prevention Maintenance (continued)

Over Current Fuse Application

  • Types of Fuses
  • Fuse Application & Operation
  • Time-Current Curves
  • Transformer & Lateral Protection
  • Fuse Coordination – field application discussion
  • Other Fuse Related Topics

Cable Design, Application & Failure Modes

  • Fault Cable Indicators
  • Fault Location Techniques

Ferroresonance

Discussion & Wrap Up

Advanced Topics in Underground Distribution

Session One: Wednesday, October 28

Introduction 

  • Course objectives, schedule, manual, and format
  • Course participants' sharing of questions and topics of interest
Underground Distribution Practices, Costs, and Benefits

  • Course objectives, schedule, manual, and format
  • Course participants' sharing of questions and topics of interest
Underground Distribution Practices, Costs, and Benefits

  • Underground distribution practices
  • Public expectations for undergrounding
  • Underground distribution costs and benefits

 Long-Life Cable Installations

  • Cable features and specifications
  • Cable applications

 Long-Life Cable Installations

  • Cable Installation in underground structures
  • Overvoltage Protection for cable life extension
  • In-service cable testing (optional)

Session Two: Thursday, October 29

Professional Practice in Utility Underground line Design

  • Risk exposures and management strategies
  • Legal and regulatory environment for utilities and engineers
  • Underground line design criteria
  • The underground line design process
Distribution System Improvement

  • System improvement goals
  • System planning
  • Standards and specifications
  • Testing & analysis
  • Key drivers for performance improvement
  • Prioritizing capital investments
  • Selected hot topics
  • Closing Remarks, Recap and Q&A

Questions?

   (626) 793-9364 ext. 212
   training@scppa.org