摘 要
随着现代电力电子设备的广泛应用，电力系统中的谐波污染问题日益严重，对电网的安全稳定运行和电能质量构成了显著威胁为此，本文针对电力系统中谐波检测与治理技术展开深入研究，旨在提出高效、精确的解决方案以应对复杂工况下的谐波问题研究中，首先分析了谐波产生的机理及其对电力系统的潜在危害，并综述了现有谐波检测与抑制方法的优缺点在此基础上，提出了一种基于改进型小波变换的谐波检测算法，该算法通过优化分解尺度和阈值处理，显著提升了谐波分量提取的精度与实时性同时，设计了一种新型有源电力滤波器拓扑结构，结合自适应控制策略，实现了对谐波电流的快速补偿实验结果表明，所提出的检测算法在多种工况下均表现出优异的性能，而治理方案则有效降低了电网中的谐波畸变率，验证了其可行性和优越性此外，本文构建了完整的谐波分析与评估体系，为实际工程应用提供了理论依据和参考本研究的主要贡献在于提出了更高效的谐波检测方法和更具适应性的治理技术，为提升电力系统的电能质量和运行效率奠定了基础
关键词：谐波检测；改进型小波变换；有源电力滤波器；自适应控制；谐波治理
ABSTRACT
With the widespread application of modern power electronic devices, harmonic pollution in power systems has become increasingly severe, posing significant threats to the safe and stable operation of the grid as well as to power quality. To address this issue, this study conducts an in-depth investigation into harmonic detection and mitigation technologies in power systems, aiming to propose efficient and precise solutions for complex operating conditions. Initially, the mechanisms of harmonic generation and their potential hazards to power systems are analyzed, followed by a comprehensive review of the advantages and disadvantages of existing harmonic detection and suppression methods. Based on this analysis, an improved wavelet transform-based harmonic detection algorithm is proposed, which enhances the accuracy and real-time performance of harmonic component extraction through optimized decomposition scales and threshold processing. Furthermore, a novel active power filter topology is designed, incorporating an adaptive control strategy to achieve rapid compensation of harmonic currents. Experimental results demonstrate that the proposed detection algorithm exhibits superior performance under various operating conditions, while the mitigation solution effectively reduces harmonic distortion rates in the grid, thereby validating its feasibility and superiority. Additionally, a complete harmonic analysis and evaluation system is established, providing theoretical support and reference for practical engineering applications. The primary contributions of this research lie in the development of more efficient harmonic detection methods and more adaptable mitigation technologies, laying a foundation for improving power quality and operational efficiency in power systems.
Keywords: Harmonic Detection; Improved Wavelet Transform; Active Power Filter; Adaptive Control; Harmonic Treatment
目 录
摘 要 I
ABSTRACT II
第1章 绪论 1
1.1 电力系统谐波问题的研究背景 1
1.2 谐波检测与治理技术的意义分析 1
1.3 国内外研究现状综述 1
1.4 本文研究方法与技术路线 2
第2章 谐波问题的理论基础与特性分析 3
2.1 电力系统中谐波的基本概念 3
2.2 谐波产生的机理与影响因素 3
2.3 谐波对电力系统的危害分析 4
2.4 谐波特性及其分类研究 4
2.5 理论分析在实际应用中的意义 5
第3章 谐波检测技术的研究与实现 6
3.1 常见谐波检测方法概述 6
3.2 基于FFT的谐波检测技术分析 6
3.3 小波变换在谐波检测中的应用 7
3.4 新型谐波检测算法的研究进展 7
3.5 检测技术的优化与性能评估 8
第4章 谐波治理技术的研究与实践 9
4.1 谐波治理的主要技术手段 9
4.2 有源滤波器的设计与应用 9
4.3 无源滤波器的原理与改进策略 10
4.4 混合滤波技术的研究与发展 10
4.5 治理技术的实际案例分析 11
结论 12
参考文献 13
致 谢 14
