Microprocessor-based active and reactive power measurement

This paper present improved Walsh function (IWF) algorithm as an alternative approach for active and reactive power measurement in linear and nonlinear, balanced and unbalanced sinusoidal three phase load system. It takes advantage of Walsh function unified approach and its intrinsic high level accuracy as a result of coefficient characteristics and energy behaviour representation. The developed algorithm was modeled on the Matlab Simulink software; different types of load, linear and nonlinear were also modeled based on practical voltage and current waveforms and tested with the proposed improved Walsh algorithm. The IEEE standard 1459-2000 which is based on fast Fourier transform FFT approach was used as benchmark for the linear load system while a laboratory experiment using Fluke 435 power quality analyzer PQA which complies with IEC/EN61010-1-2001standards was used to validate the improved algorithm for nonlinear load measurement. The results showed that the algorithm has the potential to effectively measure three phase power components under different load conditions.

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Multi-Terminal Network Power Measurement

International Journal of Electrical Engineering Education ◽

10.7227/ijeee.39.2.7 ◽

2002 ◽

Vol 39 (2) ◽

pp. 148-161 ◽

Cited By ~ 7

Author(s):

Félix Redondo Quintela ◽

Norberto Redondo Melchor

Keyword(s):

General Theory ◽

Reactive Power ◽

Measurement Procedure ◽

Measurement Methods ◽

Direct Application ◽

Power Measurement ◽

Active And Reactive Power ◽

Absolute Certainty ◽

The Subject ◽

Network Power

This paper presents a simple and general theory on power absorbed by multi-terminal networks and the way to measure it, which has direct application to unification of active and reactive power measurement procedures of polyphase loads. This approach to the subject is highly efficient, not only for its simplicity, but also because it eliminates all particular demonstrations or proofs of different measurement methods, with consequent time and effort savings for students. It also offers absolute certainty about the scope of every power measurement procedure and their possible variations.

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ELECTRIC POWER DEFINITION IN THE WAVELET DOMAIN

International Journal of Wavelets Multiresolution and Information Processing ◽

10.1142/s0219691305001032 ◽

2005 ◽

Vol 03 (04) ◽

pp. 573-585 ◽

Cited By ~ 2

Author(s):

EDUARDO ANTONIO CANO PLATA ◽

HERNÁN EMILIO TACCA

Keyword(s):

Reactive Power ◽

Power Measurement ◽

Quality Analysis ◽

Wavelet Domain ◽

Active And Reactive Power ◽

Analysis Technique ◽

Three Phase ◽

Power Quality Analysis ◽

Simple Phase ◽

Definition Of

This paper discusses the definition of active and reactive power in wavelet domain. Different definitions for three-phase power may cause significant changes in the measurement equipment topology. The simple phase shift using the Akagi method between current and voltage for reactive power measurement is discussed. A new power quality analysis technique (pqAT) is proposed.

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