The British Electricity Boards National Fault and Interruption Reporting Scheme-Objectives, Development and Operating Experience

This paper describes and outlines early working experience with a nationwide data collection scheme introduced to permit the statistical analysis of interruptions in customers supplies and the performances at times of fault of electricity distribution systems and their servicing organisations. Some equipment and system failure rates, assessments of the security of complete systems, and typical fault operation rates for switchgear based on national results over six years are included.