Composite System Reliability Evaluation

Abstract

Reliability is old concept and a new discipline. Reliability is, and always has been, one of the major factors in planning, design, operation and maintenance of electric power system. Reliability of an electric supply system has been defined as the probability of providing the user with continuous service of satisfactory quality. Reliability prediction is a method of quantitatively stating what is expected to occur and can be used to indicate the relative merits of alternate design proposals with regard to a predetermined level of performance adequacy.

This thesis deals with reliability evaluation of combined generation and transmission system known as composite system. It describes a technique and a program to calculate composite system reliability and its indices by applying it on a system. Composite system reliability is achieving considerable attention these days as utilities are finding it increasingly necessary to quantitatively evaluate individual busbar and overall system indices. In this research work following reliabilities has been calculated and evaluated for a system: •Generation system reliability •Transmission system reliability •Composite system reliability •Composite system reliability indices