冯浩,曹云轩,杜银波.采用自适应陷波器的电压暂降检测方法[J].电测与仪表,2014,51(15):. Feng Hao,Cao Yun-xuan,Du Yin-bo.Detection Method of Voltage Sag through Employing Adaptive Notch Filter[J].Electrical Measurement & Instrumentation,2014,51(15):.
采用自适应陷波器的电压暂降检测方法
Detection Method of Voltage Sag through Employing Adaptive Notch Filter
With the development of technology, the requirements of electrical equipment for power quality are higher. Voltage sag problem is getting more attentions, where accurate detection of voltage sag is the premise of compensating the question of voltage sag. In this paper, employing the filter function of the structure adaptive notch filter and frequency adaptive method can accurately detect the fundamental phase voltage signal and the quadrature signal under frequency changing. Thus, it can obtain the amplitude and phase information of the voltage, and reaches the voltage sag detection. The method is simple, and eliminates harmonic influence, and adapts frequency changing. Simulation and experimental results show that voltage sag detection method employing the adaptive notch filter can accurately obtain the voltage of each phase voltage sag information.
