Thesis
IMPLEMENTACIÓN DE UN MEDIDOR CON MICROCONTROLADOR PARA LA DETECCIÓN DE OSCILACIONES DE BAJA FRECUENCIA
Autor
GARCÍA VEGA, SALVADOR DAVID
Institución
Resumen
The oscillations are related to electric power systems (EPS) therefore can not be eliminated from the dynamic behavior of the SEP but in the case of poorly damped oscillations have procedures are designed so that they work within acceptable values.
This paper examines one case of poorly damped oscillations that is the case of low frequency oscillations, which can be detected by different analysis techniques, among which the Prony method is the method of modal identification accepted in the analysis of power systems.
An evaluation was made using the method of Prony ideal signals to different kinds of eigenvalues in the range of low-frequency oscillations (0.5 to 3.5 Hz) and then using data obtained from a power system performs validation of the results obtained, that were validated with results available in the literature and the results of commercial simulation software.
Once validated the Prony method is performed using a microcontroller implementation allows us to obtain measurements of active power, reactive power and voltage at the input terminals are for the Prony method and implemented and compared with the results of the simulations.
Were performed following digital computer programs in various programming languages:
Programme for synchronized phasor measurement with variable storage on a USB stick (C language in Code Warrior 7.2).
Programme for synchronized phasor measurement, with data sent via RS-232 to the server. (C language in Code Warrior 7.2).
Program Prony algorithm for detecting low-frequency oscillations and receiving data via a microcontroller. (MATLAB language).
For the final test used a simulator electric power systems using a measurement system implemented in a microcontroller which in turn sends the information obtained through an RS-232 to a detection center of low-frequency oscillations of the data shows system user, the results were tested with the power system simulation.