一种SAPF的谐波补偿和谐振阻尼复合控制策略

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摘要针对独立小供电系统和配电网中发生的并联的功率因数校正电容器和电网阻抗之间的谐振现象, 本文首先分析了在谐振状况时并联型有源电力滤波器(Shunt Active Power Filter, SAPF)在传统控制策略下检测负载电流的两种方式(包含谐振电容电流和不包括谐振电容电流), 分析表明, 当检测点设立在非线性负载出口处时方案最优。接着分析了最优检测点下SAPF的谐波的补偿和谐振阻尼效果, 虽然在该方案下SAPF对非线性负载的谐波具有补偿效果, 对谐振引起的谐波放大也有抑制效果, 但是在这种传统控制策略下的阻尼效果并不能使谐波成分满足电能质量标准的要求。因此, 本文提出了一种新型的复合的谐波补偿和谐振阻尼策略, 在补偿谐波同时能阻尼谐振, 可以达到满足电能质量标准的要求。最后给出了仿真和实验的结果。

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	戴珂
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关键词 ：并联型有源电力滤波器, 复合控制, 谐振阻尼, 谐波补偿

Abstract：In small and independent power system or distribution network, capacitors are widely used to increase power factor, which together with system impedance generally cause resonant problems. In this paper, shunt active power filter (SAPF) is used to compensate harmonic and damp resonance. Firstly, the damping characteristics of SAPF with traditional load current detection methods (detecting current including or not including the capacitor current) are analyzed respectively. The results show detecting current not include the capacitor is better. Then the capability of SAPF to compensate harmonic and damp resonance under the better detecting is discussed. In traditional control strategy, SAPF have a certain effect to reduce harmonic and suppress resonance, but it cannot be satisfied the power quality standard. So, a new hybrid control strategy of harmonic compensation and resonance damping is proposed to satisfied in this paper. Finally, the simulation and experiment results are presented to verify the analysis.

Key words： SAPF the hybrid control strategy resonance damping harmonics compensation

收稿日期: 2012-09-10 出版日期: 2014-03-25

PACS:

TM761

基金资助:台达环境与教育基金会《电力电子科教发展计划》重点项目(DREK 2012001)和国家自然科学基金重点资助项目(51277086)

作者简介: 戴珂男, 1969年生, 副教授, 硕士生导师, 研究方向为电力电子在电力系统中的应用, 电能质量和有源滤波器等。段科威男, 1986年生, 硕士, 研究方向为电能质量和有源滤波器。

引用本文:

戴珂, 段科威, 刘聪, 王欣. 一种SAPF的谐波补偿和谐振阻尼复合控制策略[J]. 电工技术学报, 2013, 28(9): 86-94. Dai Ke, Duan Kewei, Liu Cong, Wang Xin. A Hybrid Control Strategy of Harmonic Compensation and Resonance Damping Based on SAPF. Transactions of China Electrotechnical Society, 2013, 28(9): 86-94.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2013/V28/I9/86

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