摘要
由于孤岛检测方法的特点,需要对并网系统十个电网电压周期进行锁相.在正弦表归零锁相方法的基础上,提出1种十个电网电压周期软件锁相的方法,该方法原理简单,易于实现.实验结果验证了在光伏并网系统中使用正弦低频相位扰动孤岛检测法的可行性.
To meet the requirement of phase-lock of the sinusoidal low-frequency phase perturbation islanding detection method,ten grid voltage cycle phase lock was requested when the islanding detection method was used in photovoltaic grid-connected system.Based on the Sine table to zero phase lock method,a ten grid voltage cycle software phase-locked method was presented.This method is simple and easy to realize.The experimental result verifies the feasibility of this method.
出处
《西安工程大学学报》
CAS
2013年第4期488-491,共4页
Journal of Xi’an Polytechnic University
关键词
正弦低频相位扰动孤岛检测法
十个电网电压周期
软件锁相
the sinusoidal low-frequency phase perturbation islanding detection method
ten grid voltage cycle
software phase-locked
