RELIABILITY ASSESSMENT OF DISTRIBUTION SYSTEM (CASE STUDY BURRI AREA DISTRIBUTION SYSTEM)

Abstract

A stable and reliable electric power supply system is an inevitable pre-requisite for the technological and economic growth of any nation. Due to this, utilities must strive and ensure that the customer’s reliability requirements are met and the regulators requirements satisfied at the lowest possible cost. It is known fact around the world that 90% of the of the customer service interruptions are caused due to failure in distribution system. The system modeling and simulation study is carried out on one of the district’s distribution system which consists of 11kV network in Burri Area by using Neplan software. The reliability assessment is done on 11kV system to assess the performance of the present system. The alternative which gives low SAIDI, SAIFI and minimum breakeven costs are being assessed and considered. The reliability of 11kV system could be further improved by installation of load break switch, auto recloser and connecting with line coming from other district (reserve) in strategic portions at reasonable break even cost.