![]() Ideally, the total generated power of the TPP during the 8 years can be calculated by multiplying the total installed capacity by the number of the years. These values are fluctuated based on the performance of the TPP during the years. The calculated values for each rating parameter across the studied period are shown in Table 4. Moreover, this evaluation is useful for linking maintenance to the overall performance of the power plant, thus, helping in maintenance scheduling. The proposed evaluation methodology will help in the performance diagnostics of similar power plants. The aim of this paper is to report on an evaluation method to assess the performance of a TPP in terms of availability, reliability, capacity factor, and thermal efficiency, for a period of 8 years (from 2010 to 2017). Given the important role of energy in economic development in a country and the anticipated substantial future requirements, it is a key choice to conserve energy and make productive usage. In addition, the study showed that raising the ambient temperature by 1 ☌ would result in about a 1% drop in the rated capacity of the GT. In addition, the output of the gas-turbine engine has relatively poor performance at part-load, and power output ( \(\) can be much greater. In addition, the operation of GTs and combined-cycle operations is predominantly affected by the long-term operation. However, the performance of the GT is influenced by both the efficiency of components and the turbine inlet temperature 5, 6. GTs are also known for their flexibility and regular availability 4. GTs have earned a privileged position among other electrical generation technologies due to its high efficiency and reliability, particularly when incorporated with combined cycle 4. GTs have been recognized as prime movers for reliable baseload applications and they are being increasingly used world wide 2, 3. Energy is generated in shaft power by GTs and used to power generators and other machinery. Energy is released by the mixing and ignition of compressed air into the combustion chamber (combustor) 1. The GT has a radial or axial flow air compressor mechanically connected with an upstream turbine and combustion chamber. The gas turbine (GT), also known as the combustion turbine, is a rotary motor that removes energy from a hot gas flow generated in a stream of compressed air by combustion of gas or fuel oil. Overall, the analysis indicates that the studied TPP is not within the scope of the best industrial practices. Due to the outage hours and malfunctions, the power losses throughout the studied period reached 846 MW. ![]() Moreover, the thermal efficiency of the TPP is 40% against the target value of 49%. Furthermore, the average capacity factor throughout the studied period is 70% as against the international value of 40–80%. However, the average TPP’s reliability was found to be approximately 95% against the target value of 99.9%. The results indicate that approximately 91% of the expected capacity was available throughout the studied period against the industry best practice of 95%. These parameters were calculated using a set of equations and then compared to the international best practices and target values. Four parameters were used to evaluate the performance of the TPP including the availability, the reliability, the capacity factor, and the thermal efficiency. The data for this analysis were obtained for a TPP with an installed capacity of 375 MW during a span of 8 years (2010–2017). The performance rating was conducted in compliance with the statistical principles. The aim of this study is to assess and evaluate the performance of a large-scale thermal power plant (TPP).
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