Voltage Fluctuation and Flicker Detection in Power System Under Low-voltage Electrical Equipment Testing
In conventional power system voltage fluctuation and flicker detection,frequency search method is used to integrate the flicker differences at different frequencies to detect voltage fluctuation and flicker,resulting in significant detection deviations.Therefore,a study on power system voltage fluctuation and flicker detection under low-voltage electrical equipment testing was proposed.First the voltage signal was collected using the square demodulation method,and fluctuation and flicker signals were processed.Then the characteristic quantities of voltage fluctuation and flicker were extracted,and the parameters of voltage fluctuation and flicker were analyzed to construct a detection model.Based on single-frequency signals and multi-frequency signals,specific detection models were constructed separately.Finally the overall process is planned and the detection study was carried out.The proposed method achieved a flicker detection deviation of 23.15%in the experiment in which the control group had a flicker detection deviation of 46.78%,and thereby was proved more accurate and practically applicable.
low-voltage electrical appliance and power systemvoltage fluctuationvoltage flickervoltage detection
NETL
NSTL
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