Modelo de reguladores de velocidad y turbinas implementados en el grupo motor generado del laboratorio físico de sistemas eléctrico de potencia : características estáticas y dinámicas del modelo de regulador de velocidad y turbina de vapor del grupo motor-generador

Abstract

In the Physical Laboratory of Electrical Power Systems of the National Polytechnic School there is a 10 HP, 1200 rpm, 220 V and 60 Hz motor generator group together with a GOV model speed regulator, which is made up of hardware and software. The present project is carried out with the objective of obtaining the static and dynamic characteristics of the motor-generator group operating as a steam thermal power plant nonreheat, including the behavior of the turbine, for which the transfer function of the turbine is incorporated into the model previously entered into the GOV card. To achieve the aforementioned, it is essential to understand the operation of the entire system, especially the speed regulator, in addition to that, a block model is created in Matlab of the DC motor, the transfer functions of the speed controller and the turbine are defined, then, using the Matlab ""tuned"" function, the parameters of the transfer functions are tuned so that the DC motor behaves like a steam turbine, since the appropriate behavior is obtained by simulation. With the help of the Waijung library, the developed software is loaded onto the GOV's STM32F407G card. Once this has been done, tests are carried out on the system made up of the motor-generator group and the speed regulator to obtain the static and dynamic characteristics of the complete system, behaving like a steam thermal power plant nonreheat. The characteristics obtained are: inertia, statism, damping, response times and dead band. The tests carried out to obtain the aforementioned static and dynamic characteristics are: no-load test, abrupt disconnection of a representative load, speed decay, connection and disconnection of small load steps.