HHT-based power quality analysis and energy efficiency management

As the scale of the power grid grows and develops, the problem of power quality is becoming more and more serious. Only by effectively monitoring and analyzing various power quality problems can it be improved and managed in a targeted manner. This paper uses HHT to detect and analyze power quality disturbance signals and harmonics. The method consists of two parts: Empirical Mode Decomposition (EMD) and Hilbert Transform (HT). After obtaining the intrinsic mode function (IMF) by EMD, Then perform a Hilbert transform, The instantaneous frequency and amplitude of the corresponding moment can be accurately characterized. Design a monitoring system combining dsp and Labview on the hardware to effectively analyze and real-time monitoring various parameters of power quality.