Probabilistic assessment of the sag in an overhead transmission line

The sag in an overhead transmission line is significantly influenced by the current in the line conductor. Using the deterministic method to determine current carrying capacity of a conductor is too conservative. In recent times however, some power utility companies are using the real-time monitoring approach. This is very costly and cannot be adopted by all. A new method, based on probabilistic techniques, is used to assess the sag in an overhead line in this paper.