Abstract
The paper presents the results of a simulation research showing the problem of "spectrum leakage" in harmonic measurements. At the beginning, the paper discusses issues related to the need to analyze the power quality and the phenomenon of "spectrum leakage". Subsequently, for the test signals, measurement of harmonics in accordance with the applicable standard, was performed. During the simulation research, the frequency of the tested signal was changed in the range of acceptable deviations of the frequency of the voltage in the power grid determined by the appropriate standard. The harmonic measurement error was determined, with the known spectrum of test signals. Metrological interpretation of the obtained results, and formulations of conclusions were presented in the paper.
Highlights
The intensive development of the provision of power supply services has resulted in the fact that pursuant to the Act [1], which refers to the Regulation of the Minister of Economy [2], there is a requirement that the power distributor guarantees the certain quality of power.The basic values determining the quality of supplied power are inter alia: voltage harmonics un, where n is the harmonic order, THDU voltage total distortion factor.These two parameters determine deformation of the power supplied
According to standard [3], these parameters are calculated for a time equal to 10T, where T is the nominal fundamental period of the voltage in the power grid
Period T is not constant, which results in the phenomenon of "spectrum leakage", causing the incorrect evaluation of power quality
Summary
The intensive development of the provision of power supply services has resulted in the fact that pursuant to the Act [1], which refers to the Regulation of the Minister of Economy [2], there is a requirement that the power distributor guarantees the certain quality of power. The basic values determining the quality of supplied power are inter alia: voltage harmonics un, where n is the harmonic order, THDU voltage total distortion factor. These two parameters determine deformation of the power supplied. They are currently important due to the large number of electronic power loads in the power grid. Period T is not constant, which results in the phenomenon of "spectrum leakage", causing the incorrect evaluation of power quality.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
