Mejoras de la Regulación de Frecuencia Utilizando el Aumento de Inercia de Microrredes Interconectadas
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Universidad Industrial de Santander
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El control por pendiente garantiza la regulación de frecuencia y el reparto de potencia activa entre los inversores de una microrred aislada, sin embargo, introduce desviaciones respecto a la frecuencia de referencia. Cuando un generador adicional basado en inversores se conecta a la microrred se reduce la desviación en frecuencia y se aumenta la capacidad de potencia de todo el sistema; lo mismo ocurre cuando se interconectan microrredes en modo isla. El control por pendiente ha mostrado ser efectivo en microrredes basadas en inversores, sin embargo, cuando uno o más generadores sincrónicos se conectan directamente a la microrred, cambian las condiciones de dicho control. Para analizar que ocurre cuando se interconectan microrredes en modo isla se analizan los casos cuando ambas microrredes constan únicamente de inversores, y cuando una microrred o ambas tienen al menos un generador sincrónico. De esta manera, los resultados de simulación presentados demuestran las mejoras de la regulación de frecuencia utilizando el aumento de inercia de microrredes Interconectadas.
Droop control guarantee frequency regulation and power sharing among the inverters in an islanded microgrid, however, frequency deviations are introduced respect to reference values. When an aditional distributed generator base on inverters is connected to the microgrid, such deviations are reduced and the power capacity of the system is improved; same way happens when islanded microgrids are interconnected. Droop control has shown to be effective in inverter based microgrids, however, when one or more synchronous generators are directly connected to the microgrid the conditions of the controller change. To analaize what happen when islanded microgrids are interconected different cases are considered: first when both microgrid are based only in inverters and other case in which one microgrid has at least one synchronous generator. In this way, the simulation results show the regulation frequency improvements using the inertia increase of networked microgrids.
Droop control guarantee frequency regulation and power sharing among the inverters in an islanded microgrid, however, frequency deviations are introduced respect to reference values. When an aditional distributed generator base on inverters is connected to the microgrid, such deviations are reduced and the power capacity of the system is improved; same way happens when islanded microgrids are interconnected. Droop control has shown to be effective in inverter based microgrids, however, when one or more synchronous generators are directly connected to the microgrid the conditions of the controller change. To analaize what happen when islanded microgrids are interconected different cases are considered: first when both microgrid are based only in inverters and other case in which one microgrid has at least one synchronous generator. In this way, the simulation results show the regulation frequency improvements using the inertia increase of networked microgrids.
Keywords
Microgrid, droop control, frequency, etworked, synchronous generator, regulation, Microrred, control por pendiente, frecuencia, interconexión, generador sincrónico, regulación.