TWO-WAY MEASUREMENT DEVICE FOR SCOTT TRANSFORMER AND MEASURING METHOD IN MEASUREMENT DEVICE FOR SCOTT TRANSFORMER

WIPO Patent Application WO/2016/117781

A1

The present invention relates to a measuring method in a measurement device for a Scott transformer, comprising the steps of: converting three-phase voltage and current on the primary side of the Scott transformer into two-phase voltage and current respectively; measuring M-phase voltage and current and T-phase voltage and current on the secondary side of the Scott transformer respectively; and identifying whether the M-phase voltage and current and the T-phase voltage and current on the secondary side of the Scott transformer correspond to a generation load (regenerative load) or a receiving load, and only when the M-phase voltage and current and the T-phase voltage and current correspond to a receiving load, measuring the receiving load by adding up an M-phase load and a T-phase load on the secondary side of the Scott transformer. The present invention solves an error in measuring effective power and ineffective power, which is caused by the phase difference between the actual voltage and current on the secondary side and the voltage and current measured on the primary side, when a Scott transformer for converting three-phase power into two-phase power is used.

SHIN DONG GOO (KR)

PCT/KR2015/007813

July 28, 2016

July 27, 2015

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SHIN DONG POWERTEC CO LTD (KR)

G01R31/50

JP2004268742A	2004-09-30
JP2013198359A	2013-09-30
KR101004147B1	2010-12-27
KR100987667B1	2010-10-13

LEE, SANG-PIL (KR)
이상필 (KR)

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