POWER QUALITY MONITORING SYSTEM AND METHOD THEREOF

WIPO Patent Application WO/2012/002615

A1

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.

PARK YONGUP (KR)
KIM SANGJUN (KR)
LEE KEONHANG (KR)
CHOI SEONGHOON (KR)
LEE BYUNGSUNG (KR)
CHOI SUNKYU (KR)

PCT/KR2010/006380

January 05, 2012

September 17, 2010

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KOREA ELECTRIC POWER CORP (KR)
PARK YONGUP (KR)
KIM SANGJUN (KR)
LEE KEONHANG (KR)
CHOI SEONGHOON (KR)
LEE BYUNGSUNG (KR)
CHOI SUNKYU (KR)

G01R23/16; G01R21/06

KR100313830B1	2001-11-15
JP2004198273A	2004-07-15
KR100813663B1	2008-03-14

Hanyang Patent Firm (KR)
한양특허법인 (KR)

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