Microgrid control strategy research

Microgrid is a concept that compared with the traditional power grid. It is a network made up of distributed power and load. The model of distributed generation, and micro-control model of stable operation of power system are important. Based on the characteristics of photovoltaic cell, in photovoltaic cell model, disturbance observation method is used to achieve maximum power point tracking. According to the condition of microgrid´s stability, the structure of V/f control and PQ control were given, appropriate parameters were design. The results of simulation show that the method has good adaptability to external environmental changing and good dynamic performance. The microgrid master-slave operation control example was given to show V/f model could ensure the smooth switching between island and grid operation and follow the changing of load in island operation.