一种频率自适应的同步相位与对称分量检测方法

摘要

Under AC power system fault conditions, detecting synchronous phase and instantaneous symmetrical components quickly and accurately is an important part of the control and protection system of power electronic e-quipment. In this paper, the influence of negative sequence voltage components on the PLL's detecting performance is studied, a novel method based on frequency adaptive for detecting instantaneous symmetrical components is proposed. In this method, the theory of instantaneous symmetrical components in