Abstract
AbstractTraditional methods to measure power system harmonics employ the power harmonic analyzer or a software package, such as Matlab or others, but they do have certain limitations in the graphical programming environment, applications for remote monitoring and control performance and for multi‐point harmonic measurement. In this paper, a PC‐based virtual instrument (VI) based on Fast Fourier Transform (FFT) to implement a remote multi‐point power system harmonics analysis and monitoring using LabVIEW is proposed. The nearby PC (Server) can collect real‐time waveform data from different multi‐locations and transmit it to remote PCs (Clients) for on line harmonic analysis and monitoring via the Internet. The history of Total Harmonic Distortion (THD) in the waveform signals from remote locations can be also recorded and tracked in the data base. The strategies and guidelines are also developed to enhance teaching and/or learning the basics of operating Internet‐based systems. Experimental results have testified its well performance and remote Web‐based capability. © 2009 Wiley Periodicals, Inc. Comput Appl Eng Educ 17: 241–252, 2009; Published online in Wiley InterScience (www.interscience.wiley.com); DOI 10.1002/cae.20175
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