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| 单相电路两种谐波检测方法的研究 | |
| 引用本文： | 赵闻蕾,王华音,邹积岩.单相电路两种谐波检测方法的研究[J].电子测量技术,2010,33(4):28-31. |
| 作者姓名： | 赵闻蕾 王华音 邹积岩 |
| 作者单位： | 1. 大连理工大学,电气工程与应用电子系,大连,116024;大连交通大学,电气信息学院,大连,116028 2. 大连交通大学,电气信息学院,大连,116028 3. 大连理工大学,电气工程与应用电子系,大连,116024 |
| 摘 要： | 针对单相电路的谐波电流检测,研究了两种检测方法,基于快速傅里叶变换FFT（Fast Fourier Transform）的谐波电流检测法和基于瞬时无功功率理论的谐波检测法。理论分析和仿真结果证明,两种方法都能精确地实时地检测出单相电路中的瞬时谐波电流。FFT可以精确地检测任意次谐波的幅值和相位,幅值和相位信息是分离的,但实时性较差。基于瞬时无功功率理论的检测法能够瞬时检测到谐波分量,具有很好的实时性,但是检测结果包括幅值和相位信息,二者不能分离开,同时需要选择适当的截止频率,以兼顾检测精度和动态响应速度。综合考虑检测精度和实时性,基于瞬时无功功率理论的检测方法更有优越性。 |
| 关 键 词： | 单相电路 谐波检测 快速傅里叶变换 瞬时无功功率 |
Study on two methods for harmonic detection of single-phase circuit |
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| Zhao Wenlei, Wang Huanyin Zou Jiyan.Study on two methods for harmonic detection of single-phase circuit[J].Electronic Measurement Technology,2010,33(4):28-31. | |
| Authors: | Zhao Wenlei Wang Huanyin Zou Jiyan |
| Affiliation: | 1.Department of Electrical and Electronic Engineering;Dalian University of Technology;Dalian 116024;2.School of Electrical Information;Dalian Jiaotong University;Dalian 116028 |
| Abstract: | Two methods based on fast fourier transform(FFT)and instantaneous reactive power theory are compared in order to detect the harmonic current of single-phase circuit.Both theory analysis and simulation results indicate that they can detect the harmonic current of single-phase circuit precisely and real-time.FFT can detect the separate amplitude and angle of any harmonics while it is weak in real time.The method based on instantaneous reactive power theory can detect harmonic component in real time while the ... |
| Keywords: | single-phase circuit harmonic detection fast fourier transform instantaneous reactive power |
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