| 摘要 |
The present invention relates to a power quality monitoring system and method thereof. The power quality monitoring system includes a power quality measuring device and a server. The power quality measuring device is connected to a bus and a distribution line of a power system to obtain a voltage waveform from each of the bus and the distribution line at a set time interval, samples the obtained voltage waveform and current waveform in a set period, and overlaps the voltage waveform and the current waveform sampled for a set measurement period into one cycle to generate and transmit a representative voltage waveform and a representative current waveform. The server decomposes a representative voltage waveform and a representative current waveform into a harmonic wave component through Fast Fourier Transform (FFT) and monitors abnormal occurrences in a power system by analyzing the harmonic wave component.
|
