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Phase disturbances in electric power signals are neglected and only amplitude (envelope) distortions are discussed in a literature. Amplitude disturbances are interpreted as amplitude modulation (AM) of main 50 Hz frequency. Detailed analysis of all disturbances and their sources are presented in the paper. It is shown that AM and narrow band PM (phase modulation) take place in power network simultaneously...
Phase disturbances in electric power signals are neglected and only amplitude (envelope) distortions are discussed in a literature. Amplitude disturbances are interpreted as Amplitude Modulation (AM) of main 50 Hz frequency. Detailed analysis of all disturbances and their sources are presented in the paper. It is shown that AM and narrow band PM (phase modulation) take place in power network simultaneously...
The paper presents new approach to voltage disturbances measurement in electric power network. It is assumed that analyzed disturbances are caused by simultaneous amplitude and phase modulation. Analytic signal is used for detection of amplitude and phase changes which are next measured as variation of a function. The proposed method is illustrated and verified by field experiment.
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