The Law of Load Variation and User’s Behavior Based on FFT Analysis

Abstract

In order to study the change of load and the behavior of power users, this paper chooses the load of a large customer to analyze the power consumption. We can find the change trend and characteristics of power factor of power load by comparing the change trend between active and reactive power consumption. Using FFT filter on the active power and reactive power for low-pass filtering and high-pass filtering. And we can find the approximate range of frequency of power consumption. Finally, combing with band-pass filtering we can determine the frequency of power consumption fluctuating within a very small range. The research on the law of load variation and user's behavior can provide theoretical support for the follow-up power system research, which can improve the stability of power grid and improve the accuracy of load forecasting.