STUDY ON THE DYNAMIC MODEL OF THE HYDROTURBINE CONTROL SYSTEM.

The fundamental work for studies on the behavior of the hydroturbine control system is to establish the dynamic mathematical model of the controlled system. What has been done in the past was to derive the linearized equations of the hydroturbine torque and flow rate with the model-test curves, i. e. the external characteristics. A description method is developed in reference to the mathematical model of a controlled system with the internal characteristics, i. e. , the analytical expressions by means of the hydroturbine basic equations considering various dynamic factors. Applied to various types of hydroturbines installed in the isolated system, this model does not need site-test data to analyze the dynamics of the control system, and is able to make the optimal setting of the governor parameters by the simulation technique giving the optimum performance index. In addition, the mathematical model described by the state equations is discussed.