Title :
Measurement of reactive power using a 90/spl deg/ reference and a wattmeter
Author_Institution :
Lab. of Nat. Measure., CSIRO, Lindfield, NSW, Australia
Abstract :
A reference standard for VARs is described which uses a calibrated wattmeter with applied voltage displaced by 90/spl deg/ from that of the VARmeter under test. Precise quadrature between the two voltages is monitored using a variation of the NML zero power-factor reference described previously. The uncertainty in VAR measurement is significantly better than that achieved by calculating from watts and apparent power.
Keywords :
Calibration; Measurement standards; Measurement uncertainty; Power measurement; Power meters; Reactive power; Volt-ampere meters; Wattmeters; VAR meter; calibrated wattmeter; calibration system; displaced applied voltage; precise quadrature; reactive power measurement; reference standard; traceability; uncertainty; zero power-factor reference; Calibration; Circuits; Equations; Measurement uncertainty; Power measurement; Q measurement; Reactive power; Resistors; Voltage; Wattmeters;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.850867
