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Evaluation of indices for voltage stability monitoring using PMU measurements
Evaluación de índices para el monitoreo de la estabilidad de tensión, usando mediciones PMU
Keywords:
Contingency, Phasor measurement unit (PMU), voltage stability, wide area measurement system (WAMS), power system (en)Contingencia, Unidad de Medición Fasorial (PMU), estabilidad de tensión, sistemas de medición de área amplia (WAMS), sistema de potencia (es)
Large disturbances such as voltage collapse and its consequences represent a large challenge to the operational safety of power systems. Therefore, it is important to have indicators of the presence of voltage stability problems in real time. Using phasor measurements of voltage and current that are presented in Phasor Measurement Units (PMU), indices for voltage stability monitoring can be calculated in real time. This paper presents some indices for voltage stability monitoring using PMU measurements. Evaluation of such indices on a simplified system was carried out, and the indices were classified according to their method of calculation. Finally, one of these indices was used with the New England 39-bus system under different operating scenarios, including load increments, line output and generator output, to check the indices' behavior for voltage stability monitoring based on synchronized local measurements.
Las grandes perturbaciones, tales como: el colapso de tensión y sus consecuencias, representan un gran desafío para la seguridad operativa de los sistemas de potencia. Por lo tanto, es importante contar con indicadores para alertar la presencia de problemas de estabilidad de tensión, en tiempo real. A partir de mediciones fasoriales de voltaje y corriente proporcionadas por las unidades de medición fasorial -PMU, se pueden calcular los índices para el monitoreo de la estabilidad de tensión en tiempo real. Así, este articulo presenta algunos índices para el monitoreo de dicha estabilidad, utilizando mediciones PMU. Se realizó la evaluación de los índices en un sistema simplificado y se clasificaron de acuerdo a su método de cálculo. Finalmente, uno de estos índices fue utilizado con el sistema New England 39-nodos, bajo diferentes escenarios de operación, incluyendo incrementos de carga, salida de línea y salida de generador, para comprobar de esta manera, el comportamiento de los índices de monitoreo de estabilidad de tensión basado en mediciones locales sincronizadas.
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Copyright (c) 2014 Sindy Lorena Ramirez Perdomo, Carlos Arturo Lozano Moncada
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