espanolRESUMEN En este trabajo se modela y simula una microrred electrica cuyo esquema de generacion cuenta con un sistema fotovoltaico y un grupo electrogeno que permite determinada autonomia en caso de desconexion con la red electrica, en diferentes modos de operacion, conectado a la red o aislada de ella, asi como la desconexion de la microrred del SEN y entrada de un grupo electrogeno. Se utilizo el programa MatLab R2017b, a traves de su herramienta SimPower System, Se analizo en cada caso el comportamiento de la microrred en la busqueda de confiabilidad y continuidad en el servicio de energia electrica. La carga se simula a partir de la curva de demanda durante 24 horas. Con el objetivo de analizar su comportamiento, inicialmente se comprobo el funcionamiento de cada uno de los componentes que conforman el sistema en las condiciones de trabajo establecidas, lograndose en cada caso un comportamiento adecuado. EnglishABSTRACT In this work, an electrical microgrid is modeled and simulated. Its generation scheme has a photovoltaic system and a generator that allows some autonomy in the event of disconnection from the electricity grid. Different operating modes were analyzed: microgrid connected to or isolated from the electrical network, as well as the disconnection of the microgrid from the SEN and the input of a generator set. The MatLab R2017b program was used, through its SimPower System tool. In each case, the behavior of the microgrid was analyzed in search of reliability and continuity in the electric power service. The load is simulated from the demand curve for 24 hours. To analyze its behavior, the operation of each of the components that make up the system was verified under the established working conditions, achieving adequate behavior in each case.