Paper Title: Reliability Assessment and Proposing Possible Solutions for Wolayta Power Distribution System

Author's name: Amanuel Desta, Mary Raja Slochanal Soosai

This paper focuses thoroughly to identify the causes for power interruptions that makes the distribution network unreliable and dissatisfies the customers and proposes possible solutions to improve reliability. Deterministic Approach and Probabilistic Approach are used to investigate the reliability of the distribution system. The case study area is Wolayta substation distribution system, Wolayta Sodo city, Ethiopia. The calculation of different reliability indices clearly indicates that Wolayta Sodo distribution substation system is extremely unreliable. The reliability of the existing distribution system is improved by specifying the materials and devices like transformers, insulators, bus bars, grounding system and conductors of 132/33kV. And also improved by connecting small hydro and solar power stations at the customer side.

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