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METHOD OF ANALYSIS OF THE IMBALANCE OF A THREE-PHASE ELECTRICAL NETWORK
ES2425469
Method for analyzing the imbalance of a three-phase electrical network formed by three active conductors (11), comprising the steps of: - between the connection points of the electric network (15) corresponding to each pair of active conductors (11), measure the effective value of the phase-phase voltage; - record the assigned or nominal effective value of the mains voltage (urtd), - from the three phase-phase voltage effective values, calculate its arithmetic mean value (uavg) and select the most remote numerical value, by excess or defect, (umaxdev) of said arithmetic mean value (uavg); - obtain an index that represents the voltage level at the points of connection of the electric network (15); - obtain an index representing the discrepancy between the numerically most effective value (umaxdev) and the arithmetic mean value (uavg); - obtaining an index representing the angular deviation between the phase-phase voltage of a first pair of active conductors (11) and the phase-phase voltage of a second pair of active conductors (11); - from these three indices, classify the unbalance of the three-phase voltage network. (Machine-translation by Google Translate, not legally binding)
Método de análisis del desequilibrio de una red eléctrica trifásica formada por tres conductores activos que permite: obtener un índice que represente el nivel de tensión en los puntos de conexión de la red eléctrica, obtener un índice que represente la discrepancia entre el valor eficaz más alejado numéricamente y el valor medio aritmético de los tres valores eficaces de tensión fase-fase, obtener un índice que represente la desviación ángular entre la tensión fase-fase de un primer par de conductores activos y la tensión fase-fase de un segundo par de conductores activos, a partir de dichos tres índices clasificar el desequilibrio de la red de tensión trifásica.