GONZÁLEZ CAGIGAL , Miguel Ángel

En este trabajo de investigación se tiene como objetivo principal realizar una estimación lo más precisa posible de los parámetros que definen la dinámica interna de un aerogenerador síncrono, así como las constantes propias del convertidor en fuente de tensión acoplado al mismo. Para la estimación se va a utilizar el filtrado de Kalman, en...

This thesis presents several applications of dynamic state estimators based on Kalman filtering to different fields of the electric power systems. First, a parameter estimation technique is proposed, applied to a generation set composed by the synchronous machine along with the frequency regulation (speed governor) and the voltage controllers...

Este trabajo presenta una novedosa técnica de estimación de parámetros para sistemas de generación que incluyen el par turbina-generador, junto con los controladores ordinarios, véase, el Turbine Governor, el Automatic Voltage Regulator y el Power System Stabilizer. Esta técnica propuesta se basa en el Unscented Kalman Filter para realizar una...

Este trabajo presenta una metodología original para el tratamiento de los datos reportados de positivos y fallecidos por una epidemia vírica. El objetivo principal es caracterizar la evolución de la progresión del número de infectados reales, y en consecuencia poder predecir en qué momento se alcanzará el pico de la epidemia en un caso de...

This paper presents a parameter estimation technique for the hot-spot thermal model of power transformers. The proposed technique is based on the unscented formulation of the Kalman filter, jointly considering the state variables and parameters of the dynamic thermal model. A two-stage estimation technique that takes advantage of different...

This work presents a novel methodology for systematically processing the time series that report the number of positive, recovered and deceased cases from a viral epidemic, such as Covid-19. The main objective is to unveil the evolution of the number of real infected people, and consequently to predict the peak of the epidemic and subsequent...

This paper addresses the customer-phase identification problem in three-phase distribution grids including three-phase customers characterized by aggregated energy measurements. The proposed technique first solves a relaxed problem, in which the binary nature of the variables is ignored, which leads to a constrained, least-squares estimation,...

This paper presents a parameter estimation technique for a variable-speed wind turbine with permanent magnet synchronous generator and back-to-back voltage source converter. The proposed technique applies the cubature Kalman filter for the joint estimation of the system dynamic state and a modified set of parameters from which the original...

This paper presents a state estimation approach to address the problem of identifying the phase to which single-phase customers are connected in three-phase distribution grids. The proposed method performs Kalman filtering on the information provided simultaneously by the smart meter of every customer and the aggregated energy consumption...

This paper proposes the use of the unscented Kalman filter to estimate the equivalent model of a photovoltaic (PV) array, using external measurements of current and voltage at the inverter level. The estimated model is of interest to predict the power output of PV plants, in both planning and operation scenarios, and thus improves the efficient...

Distribution companies have the responsibility to provide a quality service to their customers, according to the existing regulation. Reliability issues, such as power outages, are registered in databases for a quantitative evaluation of this quality. This paper uses one of these historical records to make a statistical analysis of service...

This paper presents a novel technique to calculate the ampacity of an overhead transmission line in real time, considering the dynamic evolution of the conductor temperature. In case this method cannot be applied due to lack of adequate information, a correction is proposed for the maximum current, based on Monte Carlo simulations assuming...

En este artículo se presentan diferentes métodos para la monitorización y el cálculo de la capacidad dinámica de transporte (DLR) en líneas aéreas, distinguiendo los basados en la medición o predicción de todas las variables meteorológicas involucradas en las correspondientes ecuaciones, y los que emplean medidas directas o indirectas de la...