MODELING AND SIMULATION OF HYDRO POWER PLANT

Abstract

Modeling and simulation of the hydropower plants is necessary to study the dynamic behaviors and dynamic response of the hydraulic systems, the governor and electrical systems associated with the plants. It also helps in studying the stability of the system and the coordination of governor parameters with those of the hydraulic and electrical systems for optimal performance of the plant. This dissertation presents the modeling and simulation of large hydropower plant under different operating conditions. The considered large hydropower plant consists of a hydro turbine with PID governor and synchronous generator with DC1A excitation system and is connected to the grid. The large hydropower plant simulation model is developed under MATLAB/Simulink environment. The Matlab/Simulink model of a large hydropower plant is also transformed to RT-LAB environment for the real-time (OPAL-RT) simulation. With the help of this developed simulation model of large hydropower plant, the study of dynamic behavior of large hydropower plant have been analyzed when subjected to disturbances like load addition, load removal, and three phase short circuit fault conditions at the terminal of synchronous generator of plant. The hydraulic transient analysis of hydropower plant at different parameters of PID governor gain (Proportional gain, Integral gain and Derivative gain) is also carried out. Finally, the comparison of results of the real-time simulation in RT-LAB and offline simulation in Matlab/Simulink are presented and discussed.