Optimize the Operational Parameters through Simulation to Increase the Efficiency of Combined Cycle Power Plants

Abstract

Electric power generation is one of the important factors for the development of peoples and can take an advantage of energy extraction technology of combined cycle in Sudan, which is highly effective in the States instead of remote power generation and combined cycle power plant also be economically feasible for use in sugar refineries in Sudan. . The purpose of this study is to find the maximum efficiency and minimum cost of power generation in combined cycle power plant by simulate GARRI (1) combined cycle power plant by using ASPEN HYSYS. It aims to conduct a detailed thermodynamic analysis for combined cycle power plant and optimization to attained maximum efficiency by dissertating different scenarios of operating parameters.

The study examined the operational side by passing through all the components of the combined cycle power plant and the mechanism of the system. Block 1 in GARRI (1) combined cycle power plant is used.

The efficiency obtained from ASPEN HYSYS simulator is 31.89% and that find by mat lab code is 31.42% while the actual of GARRI (1) is 27.4%. The effect of each operating parameter on the efficiency and power output was extracted by using Microsoft excel in form of graphical charts resulted from the thermodynamic analysis done by using ASPEN HYSYS simulator. The maximum efficiency in the optimum operating parameters is about 33.88% by using different scenarios. Reference to the results the Parameters that have a significant impact on the overall efficiency and the power output of the plant and it has and economic effect on the results are the fuel mass flow rate and compressor pressure ratio. The study verified and chooses the values to give optimum efficiency and power output under a minimum cost. Research found that air (ambient/outdoor) temperature has a major impact factor effect on the overall efficiency and net power output.