| 引用本文: | 盖阔,安群涛,孙力.基于多重比例谐振的动态电压恢复器谐波补偿策略[J].电力自动化设备,2018,(1): |
| GAI Kuo,AN Quntao,SUN Li.Harmonic compensation strategy of dynamic voltage restorer based on multiple proportional resonant[J].Electric Power Automation Equipment,2018,(1): |
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| 摘要: |
| 针对动态电压恢复器在单相电压补偿过程中基波电压提取和谐波补偿的问题，提出一种基于多重比例谐振的控制策略。在动态电压恢复器数学模型的基础上，分析脉冲响应不变法和双线性变换法对比例谐振控制器的离散化效果，以提升系统数字控制的运算性能。在保证系统动态电压补偿特性的同时，讨论电网基波电压提取的改进方法和多重比例谐振调节对指定次电压谐波的补偿策略，并分析控制器参数对系统性能的影响。搭建10 kW的实验平台进行实验验证，结果证明该方法易于实现并具有良好的基波提取效果和谐波抑制能力。 |
| 关键词: 动态电压恢复器 比例谐振控制 基波提取 谐波补偿 电压暂降 |
| DOI：10.16081/j.issn.1006-6047.2018.01.023 |
| 分类号:TM761 |
| 基金项目:国家自然科学基金资助项目(51207029) |
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| Harmonic compensation strategy of dynamic voltage restorer based on multiple proportional resonant |
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GAI Kuo, AN Quntao, SUN Li
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Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China
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| Abstract: |
| A control strategy based on multiple proportional resonant is proposed to solve the problem of fundamental waveform extraction and harmonic compensation of dynamic voltage restorer in the process of single phase voltage compensation. On the basis of the mathematical model of dynamic voltage restorer, the discretization effect of impulse invariance and bilinear transformation on proportional resonant controller is analyzed to improve the computation performance of digital control. The compensation strategy of an improve fundamental waveform extraction method and multiple proportion resonance on specified voltage harmonic is discussed while ensuring the compensation characteristics of system dynamic voltage, and the influence of controller parameters on system performance is analyzed. The experimental verification is carried out on a 10 kW experimental platform and the results show that the proposed method is easily realized with good fundamental waveform extraction effect and harmonic restriction ability. |
| Key words: dynamic voltage restorer proportional resonant control fundamental waveform extraction harmonic compensation voltage sag |
