Comparison and Analysis of Dynamic Behavior of Load Frequency Control in Power System with Steam, Hydro and Gas Power Plants

Document Type : Research Paper

Author

Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

10.22104/hfe.2024.6619.1283

Abstract

Various methods are used to produce electrical energy, each of which has its own advantages and disadvantages. The power plant is one of the important parts of the power system, which is responsible for the proper production of electrical energy. In this paper, the dynamic behavior of frequency load control is compared and analyzed for three power systems, each of which includes a steam power plant, a hydro power plant, and a gas power plant. The state equations of each system are expressed separately, and then using the analysis of eigenvalues (system modes), the dynamic behavior of the power system is shown for changes in the consumption load. The power system model is simulated in MATLAB software and they show the correctness of the analysis of eigenvalues. Also, the power system model in Simulink MATLAB for each power plant is separately designed and the correctness of the results is shown. The frequency response of the transfer function, frequency changes to load demand changes, is shown in each production unit. The results of simulation and examination of the power system modes show that the steady state response of the three production units are similar to step changes in the load demand, and only the speed of reaching the steady state will be different in them.

Keywords

Main Subjects


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