6WANG Bq,ZHAO Haisen,LIAN Shoujun. Study on precision se- lection of instrument transformer and its calibration for auto- matic test system[J].Applied Mechanics and Materials,2013,333: 2461-2464.
7BRANDOLINI A,FAIFER M,OTTOBONI R. A simple method for the calibration of traditional and electronic measurement current and voltage transformers[J].IEEE Transactions on Instrumentation and Measurement,2009,58(5) : 1345-1353.
8RIETVELD G,JOL L,van den BROM H E,et al. High-current CT calibration using a sampling current ratio bridge[J]. IEEE Transactions on Instrumentation and Measurement,2013,62(6): 1693-1698.
10KUSLJEVIC M D,TOMIC J J,MARCETIC D P. Active power measurement algorithm for power system signals under nonsinu- soidal conditions and wide-range frequency deviations[J]. IET Generation Transmission & Distribution, 2009,3 ( 1 ) : 57-65.
