基于小波变换的暂态电能质量的检测与识别

摘要

The intermittent energy connected to the grid affects the operating characteristics of the power system and power quality, especially the impact of transient power quality should not be overlooked. This paper details Wavelet detection of transient power disturbances basic principle and method based on the wavelet transform which is applied to transient power quality disturbance detection and identification, combined with the example simulation study. Theoretical analysis and simulation results show that this method can achieve a voltage transient power quality disturbances fast, accurate detection, and be able to identify the disturbance type according to the energy function. Research ideas with intermittent energy access system for the detection and recognition of power quality provides an effective and feasible method.%间歇性能源接入电网影响电力系统的运行特性和电能质量，特别是对暂态电能质量的影响不容忽视。本文在详细介绍暂态电能扰动小波检测的基本原理和实现方法的基础上，将小波变换应用于暂态电能质量扰动检测和识别，结合算例进行了仿真研究。理论分析和仿真结果表明该方法能够实现对电压暂态电能质量扰动快速、准确的检测，并能够根据能量函数识别出扰动类型。研究思路可为检测识别含间歇性能源接入系统的电能质量提供一种有效、可行的方法。