引用本文:许童羽,程浩忠,周玉宏,等.基于LabVIEW的配电网谐波在线监测与分析系统[J].电力系统保护与控制,2008,36(1):63-66.
XU Tong-yu,CHENG Hao-zhong,ZHOU Yu-hong,et al.A LabVIEW-based system for distribution network harmonics monitoring and analysing[J].Power System Protection and Control,2008,36(1):63-66
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基于LabVIEW的配电网谐波在线监测与分析系统
许童羽1, 程浩忠, 周玉宏2, 陈春玲
1.上海交通大学电子信息与电气工程学院，上海 200240;2.沈阳农业大学信息与电气工程学院，辽宁 沈阳 110161
摘要:
基于LabVIEW开发平台设计了配电网谐波在线监测与分析系统，其基本设计思想是运用虚拟仪器技术取代传统的谐波监测分析仪，使系统功能更加灵活。本系统既可加载实际电网采集的谐波信号，也可加载LabVIEW平台模拟生成的畸变正弦信号。对加载的谐波信号能够进行监测，并运用不同算法进行分析。实验结果表明，在谐波分析中，采用基于汉宁窗的高精度FFT谐波分析方法可以提高分析精度。系统具有分析效果好、易于功能扩展等优点。
关键词:  谐波监测  虚拟仪器  LabVIEW  畸变正弦信号  高精度FFT法
DOI：10.7667/j.issn.1674-3415.2008.01.014
分类号:
基金项目:
A LabVIEW-based system for distribution network harmonics monitoring and analysing
XU Tong-yu1, CHENG Hao-zhong, ZHOU Yu-hong2, CHEN Chun-ling
1.Shanghai Jiaotong University, Shanghai 200240, China;2.Shenyang Agricutural University, Shenyang 110161, China
Abstract:
A virtual harmonic system based on the development platform of LabVIEW is developed. The basic design idea of this system is virtual instrument(VI)．The system is suitble to add the harmonic signal collecting from actual electrified wire netting，and also load the platform simulating harmonic signal coming into being．And the on-line harmonic monitoring is carried out through this system to reveal the state of its basic wave and harmonic waves． During the analysis of harmonics，FFT algorithm with high accuracy is used to improve accuracy of harmonics analysis．This system has advantages of better analyzed effection and low cost，and can be extended easily．
Key words:  harmonic monitoring  virtual instrument  LabVIEW  distorted sine signal  FFT algorithm with high accuracy
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