基于希尔伯特变换的移相电能质量扰动检测

Power Quality Disturbances Detection Based on Hilbert Phase-shifting

分析了基于希尔伯特变换的移相法进行信号检测的工作原理,提出了利用移相法进行多种电能质量扰动实时检测的思路。基于在Matlab环境下建立的检测平台,对电压骤升、电压骤降、电压中断、电压波动、瞬态振荡等多种电能质量扰动信号进行仿真检测,结果表明该方法可以满足对多种电能质量扰动信号检测的要求,且具有良好的实时性和准确性。

Analyses the principle of work of using phase-shifting method to detect power quality（PQ） disturbances based on Hilbert transform,this method is proposed by using phase-shifting for real-time detection on various PQ disturbances,such as voltage swells,voltage sags,voltage interruption,voltage fluctuation and transient oscillation,that based on the detection platform of Matlab environment,the simulation results show that this method can satisfy various PQ disturbances signal detection,and also has a good real-time system characteristic and accuracy