DEVELOPMENT OF A POWER ANALYZER
Ana M. R. Franco, Endre Tóth, Rosane M. Debatin, Ricardo Prada
Abstract:
These paper gives an account on a new power and energy measuring system, based on digital sampling, that was developed by the National Institute of Metrology (INMETRO) of Brazil. The goal of the project was to achieve the highest possible accuracy at line frequency (50 or 60 Hz), even in the presence of considerable harmonic distortions, to guarantee full traceability and to minimize the costs of obtaining a high quality reference system. In the new system the programmable A/D converters of two advanced digital multimeters (Hewlett-Packard 3458A) are used to measure the voltage and current simultaneously, by sampling method. The main advantage of the system is the high accuracy, full traceability to national standards within the country, and the possibility to calibrate watt-converter and watt-hour standards also in the presence of harmonics.
Keywords:
sample methods, power, energy, harmonics
Download:
IMEKO-TC4-2001-131.pdf
DOI:
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Event details
IMEKO TC:
TC4
Event name:
TC4 Symposium 2001
Title:

11th IMEKO TC4 Symposium on Trends in Electrical Measurements and Instrumentation (together with 6th IMEKO TC4 Workshop on ADC Modelling and Testing)

Place:
Lisbon, PORTUGAL
Time:
13 September 2001 - 14 September 2001
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