Search results for: T.O. Seppa
chapter
IEEE Power Engineering Society Summer Meeting, > 2 > 697 - 699 vol.2
When conductors and splices are operated beyond their intended service life and under conditions substantially different from original design objectives, care must be exercised in judging the reliability and potential service problems. Old conductors and splices successfully for long periods increasing and unexpected temperatures are increased. Properties of old copper conductors are difficult to...
article
IEEE Transactions on Power Delivery > 1993 > 8 > 3 > 1551 - 1561
Prior thermal rating studies have considered wind unpredictable. The authors state that local winds appear well behaved and statistically predictable and that they are not independent from the ambient temperature and solar insolation. This means that appropriate probabilistic analysis of wind speeds can be used to potentially increase conductor ampacities. High-quality weather measuring stations located...
article
IEEE Transactions on Power Delivery > 1993 > 8 > 3 > 1536 - 1550
The general approach to transmission line ratings has been deterministic. The proposed combination of a probabilistic planning approach and a deterministic operations view can pragmatically increase transmission capabilities by 20-30% with a 99% availability and a 100% safety. It is proposed that transmission lines should be rated in the same way they are designed, i.e., based on the ruling span....
