Performance analysis in a natural gas combined cycle power plant

With the increasing human population in the world, it is increasingly in need of energy resources as well as the need for the basic resources necessary for the sustainability of human life. This rapid increase in demand brings about the problem of the sufficiency of the amount of energy that can be provided by the resources. In order to solve this problem, new energy production resources are searched and if it is not possible to use the energy production resources as much as possible, it becomes the main objective to ensure the continuity of the current efficiency. Performance analysis of the combined cycle power plants needs to be carried out in order to continue to operate and maintain their current efficiency and to work more efficiently. In chapter third of this work, the role of ambient temperature change, which has the most effect on electric energy production in natural gas CCPP, has been examined. The role of ambient temperature change, which has the most effect on the production of electricity in natural gas CCPP, has been investigated. This plant consists of four gas turbines (GT), two steam turbines (ST) and two combined cycle blocks (CCB) obtained by their co-operation. Depending on the seasonal temperature changes, study data were obtained from each GT, ST and CCB in the ambient temperature range of 8-23°C. It has been found that the electricity generated in the GTs and indirectly the electricity production in the STs decreased in the temperature increase. As a result, the efficiency of each GT, ST and CCB was found to be lower, although the amount of fuel consumed by the controllers in the plant was reduced. At an ambient temperature of 8°C, 227.7 MW of power generation and 43.3% of efficiency were the ideal values, and when the temperature was 23 ° C, 197.3 MW of electricity production was 42.7%. Additionally, an analysis was performed using the data that was planned to be obtained from the parts that constituted the 800 MW combined cycle power plant whose installation was completed and tried to be fully operated.