Transcription of Reliability & Asset Management at Southern …
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Reliability & Asset Management at Southern …
1 IEEE PES General Meeting Reliability Panel Session Utility Practices and Challenges on Predicting Distribution System Reliability Reliability & Asset Management at Southern California Edison Shan (Sam) H Chien Southern California Edison July 2014 National Harbor MD Reliability & Asset Management at SCE: Introduction of SCE T&D System Trend of T&D equipment ageing Forecast circuit Reliability Credit infrastructure replacement Integrate cable testing with IR Substation Infrastructure Replacement Summary 2 3 Introduction of SCE Transmission and Distribution System 50,000 square miles ~ 76 billion kWh/year delivered million customers Over 400 cities & communities with collective population of over 13 million people Southern California Edison 4 Distribution & Substation Assets 1,440,000 wood poles 26,000 circuit-miles of UG primary conductor 38,000 circuit-miles of OH primary conductor 715,000 distribution transformers 87,000 padmount/subsurface switches 2,800 substation transformers 11,900 substation circuit breakers 4,600 distribution circuits (mostly radial design vs.)
ReliaSoft Weibull++ 7 - www.ReliaSoft.com Failure Rate vs Time Plot Time, (t), ) 0.000 14.000 28.000 42.000 56.000 70.000 0.000 0.100 0.020 0.040
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