The present paper discusses reliability and profit analysis of a two-unit Gas Turbine (GT) power generating system taking into account the effect of ambient temperature on production of the plant. Two different seasons, i.e., summer and the winter have been taken into consideration while developing the model. The two unit system under consideration comprises 1GT and 1Steam Turbine (ST). Initially, both GT and ST are working and this working is called working in Combined Cycle. In the case of failure of GT, system goes to down state because in GT power plants GT is prime mover and hence ST cannot work without working of GT. However, in the case of failure of the ST, GT alone may work and so system may be kept in upstate with working of only GT (called working in Single Cycle) if buyer is agree to pay higher price, otherwise system goes to down state. Repair pattern is considered as FCFS till the both turbines do not fail. However, in the case when both the turbines get failed, the priority for repair is given to the GT over the ST. Comparative analysis is done in the case when FCFS repair followed throughout versus priority considered in the present paper. Semi-Markov process and regenerative point technique are used to analyse the system. System is analysed by obtaining many performance measuresof interest in case of Combined as well as Single Cycle and also in case of winter and summer season. The minimum electricity price to be charged from the buyer of the power generated in Single Cycle during winter and summer has also been determined for different values of probabilities of paying higher price by the buyer.
Volume 11 | 01-Special Issue
Pages: 1249-1263