Abstract
The harmonic analysis technique of non-stationary signals containing inter and subharmonics in power quality control systems has been improved. The discrete windowed Fourier transform and Kotelnikov’s sampling theorem are used. Computer simulation of signal analysis was carried out according to the proposed technique based on the application of two window functions to the same set of samples simultaneously. Possibilities of using algorithms of discrete Fourier transform for digital processing of non-stationary signals in power supply systems are determined. The optimal procedure for such processing was selected for monitoring indicators of power quality in real-time.
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Abramenko, I., Tymchuk, S., Shendryk, V., Shendryk, S., Radchenko, S. (2021). Information Support of Power Quality Control Systems. In: Karabegović, I. (eds) New Technologies, Development and Application IV. NT 2021. Lecture Notes in Networks and Systems, vol 233. Springer, Cham. https://doi.org/10.1007/978-3-030-75275-0_62
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DOI: https://doi.org/10.1007/978-3-030-75275-0_62
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