一种改进型有源频率偏移孤岛检测方法

IAccording to the deficiency of traditional active frequency drift, designs an active positive and negative frequency drift detection method to improve it. Simulation models of over/under voltage pretention and over/under frequency pretention, active frequency drift and Sandia frequency drift are putting up under Matlab/Simulink, the effectiveness evaluating of active positive and negative frequency drift is verified. Through the simulation results, it is significant that the method designed in the paper is better than the traditional active frequency drift. It has the characteristics that higher reliability, better detection performance, shorter detection time.