Reliability and Availability Analysis for a Three-Unit Gas Turbine Power Generating System with Seasonal Effect and FCFS Repair Pattern

摘要

The present paper develops a reliability model for a gas turbine power generating system which comprises two gas turbines and one steam turbine. Two different seasons, i.e., summer and the winter have been taken into consideration while developing the model. Initially, both the gas turbines and the steam turbine are operative and this working is called working in full capacity. However, the situations of working of 'two gas turbines without steam turbine,' 'one gas turbine along with steam turbine', and 'one gas turbine without steam turbine' also occur and the same have been considered. The system is analysed by making use of semi-Markov processes and regenerative point technique. Reliability and Mean time to system failure (MTSF) is obtained. The availability analysis is done under various capacities and different seasons. Graphical study is also done for particular cases.