基于ip-iq理论的改进谐波检测方法

王振尚; 傅鹏; 黄连生; 陈晓娇; 王重马; 曾思哲

doi:10.11884/HPLPB201931.180295

基于ip-iq理论的改进谐波检测方法

doi: 10.11884/HPLPB201931.180295

王振尚^{1, 2,},
傅鹏^{1, 2},
黄连生^{1, 2},
陈晓娇^1, ,,
王重马^{1, 2},
曾思哲^{1, 2}

1.
中国科学院合肥物质科学研究院等离子体物理研究所, 合肥 230031
2.
中国科学技术大学研究生院科学岛分院, 合肥 230026

基金项目:

国家磁约束聚变能发展研究项目 2014GB105000

详细信息

作者简介:
王振尚(1996—)，男，博士研究生，从事磁体电源控制及检测技术研究; zswang@ipp.ac.cn

通讯作者:
陈晓娇(1989—)，女，博士，从事磁体电源技术研究; chenxj@ipp.ac.cn

中图分类号: TM133
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- 被引次数: 0
出版历程
- 收稿日期: 2018-10-30
- 修回日期: 2019-02-22
- 刊出日期: 2019-05-15

Research on improved harmonic detection method based on ip-iq theory

Wang Zhenshang^{1, 2
,},
Fu Peng^{1, 2},
Huang Liansheng^{1, 2},
Chen Xiaojiao^{1
, ,},
Wang Zhongma^{1, 2},
Zeng Sizhe^{1, 2}

1.
Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
2.
Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China

摘要

摘要: 有源电力滤波器(APF)是电力系统中实现电能质量管理的关键设备，谐波检测作为APF的关键技术之一，检测的精度和响应速度直接决定了APF的整体性能。介绍了传统的基于瞬时无功功率理论的ip-iq谐波电流检测算法; 针对其检测精度受锁相环输出相位误差影响，以及低通滤波器的存在限制了谐波检测系统的响应速度，提出了应用锁频环技术，产生与电网电压同频的单位正余弦信号的一种改进谐波检测算法; 并提出采用滑动平均滤波器(MAF)代替低通滤波器提高其响应速度以及改善谐波检测精度; 对改进的检测算法进行了理论分析，通过MATLAB进行仿真研究，理论分析和仿真结果都证明了该方法的有效性。
- 有源电力滤波器 /
- 谐波检测 /
- 瞬时无功功率理论 /
- 锁频环 /
- MAF
Abstract: Active power filter (APF) is the key equipment to realize power quality management in power system. Harmonic detection is one of the key technologies of APF. The detection accuracy and response speed directly determine the overall performance of APF. In this paper, the traditional ip-iq harmonic current detection algorithm based on instantaneous reactive power theory is introduced; and the detection accuracy is affected by the phase error of the phase locked loop output and the response speed of the harmonic detection system is limited by the existence of low-pass filter. An improved harmonic detection algorithm is proposed by frequency-locked loop technology. The algorithm can generate unit sine and cosine signals with the same frequency of grid voltage, and moving average filter (MAF) is used instead of low-pass filter to improve its response speed and harmonic detection accuracy. The algorithm is analyzed theoretically and simulated by MATLAB. The theoretical analysis and simulation results prove the effectiveness of this method.
- active power filter /
- harmonic detection /
- instantaneous reactive power theory /
- frequency locked loop /
- MAF

HTML全文

图 1 ip-iq谐波电流检测方法原理图

Figure 1. Schematic diagram of ip-iq harmonic detection

下载: 全尺寸图片幻灯片

图 2 改进的谐波电流检测新方法原理图

Figure 2. Schematic diagram of improved new harmonic detection

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图 3 MAF伯德图

Figure 3. Bode plots of MAF

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图 4 在0.10 s注入谐波后两种方法检测的A相基波、谐波仿真波形

Figure 4. Phase A fundamental and harmonic wave simulation waveforms detected by the two methods after 0.10 s with injected harmonic

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图 5 在三相不平衡时两种方法检测的A相基波、谐波仿真波形

Figure 5. Phase A fundamental and harmonic wave simulation waveforms detected by the two methods under three phase imbalance

下载: 全尺寸图片幻灯片

表 1 不同情况下两种方法谐波检测结果

Table 1. Harmonic detection results of two methods under different conditions

case	harmonic detection method	time required for stable result/s	maximum fixed detection error after stabilization/A
case 1	traditional ip-iq method	0.03	0.025
	improved ip-iq method	0.01	0
case 2	traditional ip-iq method	0.03	0.03
	improved ip-iq method	0.01	0

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