ACTIVE POWER MEASUREMENT ACCURACY INCREASING WITH SIGNIFICANT REACTIVE COMPONENT

Microcontroller Based Active and Reactive Power Measurement

A Walsh function Method for Active and Reactive Electrical Power Measurement on Power Frequencies

Introduction: The measurement of the active and reactive electrical power(EP) is one of the important tasks in electric power industry especially in the electrical energy quality estimation and control. The reactive power(RP) influences directly to the power factor and plays a vital role in the stable operation of power systems[1]. The classic way to determine the RP includes its evaluation by ...

Increasing the Accuracy of Blood Hematocrit Measurement by Triplicate Wavelength Photoplethysmography Method

Background and objectives: The importance of continuous monitoring and rapid and accurate informing of changes in blood components (e.g., percentage of hematocrit [HCT]), especially in acute conditions, has motivated researchers to use non-invasive measurement methods. Therefore, this study aimed to evaluate the association between blood HCT and photoplethysmographic signal and the possibility ...

Developing a Method for Increasing Accuracy and Precision in Measurement System Analysis: A Fuzzy Approach

Measurement systems analysis (MSA) has been applied in different aspect of industrial assessments to evaluate various types of quantitative and qualitative measures. Qualification of a measurement system depends on two important features: accuracy and precision. Since the capability of each quality system is severely related to the capability of its measurement system, the weakness of the two...

Reactive power measurement using the wavelet transform

This paper provides the theoretical basis for the measurement of reactive and distortion powers from the wavelet transforms. The measurement of reactive power relies on the use of broad-band phase-shift networks to create concurrent in-phase currents and quadrature voltages. The wavelet real power computation resulting from these 90 phase-shift networks yields the reactive power associated with...