Study and simulation of small signal stability of gas turbine plant with combined LFC and AVR control loops in single area power system

In order to manage voltage and frequency stability, a hybrid model of two control loops including load frequency control and automatic voltage regulation is used in power systems. This paper focuses on a hybrid model that integrates load frequency control (LFC) and automatic voltage regulator (AVR) to ensure voltage and frequency stability in a single-area power system with a gas turbine power plant. The effect of these two control loops in a single-zone power system is investigated and simulated. The single-zone power system includes a gas turbine power plant, and a small-signal model is used to analyze the dynamic behavior of the power system. The system equations are represented in the state space model, and the simulation results are analyzed by calculating the system states. Also, to check the accuracy of the simulation results, the power system model is implemented in the MATLAB Simulink environment, which shows the accuracy of the simulation results and their analysis.