摘要
利用LabVIEW设计了一款具有信号仿真设计、数据处理、波形显示与存取等功能的谐波分析仪。对电力系统方面存在的谐波失真信号进行仿真分析,数据处理模块实现了频谱测量、谐波分析和功率谱分析的功能。谐波分析采用了FFT算法,对信号不加窗和加窗经过参数测量后分析,加入窗函数可减少频谱泄漏,提高测量精度,从而验证了谐波分析仪设计的合理性和可行性。
A harmonic analyzer having functions such as signal simulation, data processing, wave itisplaying and accessing is designed with LabVIEW. Harmonic distortion signal of power system is analyzed on simulation. Data processing module realizes the functions of spectrum measurement, harmonic analysis and power spectral analysis. FFT algorithm is adopted to do harmonic analysis, and the parameters of signal with or without window function is measured and analyzed. There is a conclusion that it can reduce the leakage of the spectrum and improve the measurement accuracy when harmonic distortion signal was added window function, which verifies that design of the harmonic analyzer is rationality and feasibility.
出处
《电测与仪表》
北大核心
2010年第3期42-46,共5页
Electrical Measurement & Instrumentation
基金
湖南省教育资助科研项目(08C111)
长沙市科技计划项目(k0803081-11)
长沙理工大学重点学科建设项目资助
