《倪以信_电力系统模型Power_system_element_models-4》.pptVIP

Part I Power system element models Chapter 3 Prime mover and speed governor models Chapter 3 Prime mover and speed governor models 3.1 Introduction The apparatus which provide mechanical power and energy to the generators are called prime mover, such as hydro-, gas- or steam-turbines. In order to control the generator output active power, regulate rotor speed and network frequency, allocate the active power to the parallel operated generators properly, a speed governor is mounted on each prime mover. The regulation of the frequency/speed or power output is usually realized by controlling the degree of opening of the steam-valve or hydro-gate. Chapter 3 Prime mover and speed governor models 3.1 Introduction A block diagram on the relations of speed-governor, prime mover, generator, ac network and load. Chapter 3 Prime mover and speed governor models 3.1 Introduction (cont.) In this chapter, the steam-turbine and hydro-turbine models often used in p. s. analysis and the typical governor models will be introduced. ? In the steam-turbine, the steam vessel effect will be considered. In the hydro-turbine, the water-hammer effect will be considered. The mechanical-hydraulic governor model for hydro- and steam-turbines will be introduced. The electro-hydraulic governor for steam-turbines with reheaters will be mentioned as well. Chapter 3 Prime mover and speed governor models Chapter 3 Prime mover and speed governor models Chapter 3 Prime mover and speed governor models Chapter 3 Prime mover and speed governor models Chapter 3 Prime mover and speed governor models Chapter 3 Prime mover and speed governor models Chapter 3 Prime mover and speed governor models Chapter 3 Prime mover and speed governor models Chapter 3 Prime mover and speed governor models Chapter 3 Prime mover and speed governor models Chapter 3 Prime mover and speed governor models Chapter 3 Prime mover and speed governor models Chapter 3 Prime mover an