<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The concept of active power measurement based on real-time digital processing of voltage and current signals is best’ introduced with a digital approximation definition. In this paper, the authors propose an integral calculation method based on Gregory’s expression, correction of integration period estimation and integration result correction taking values related to the ends of the integration period into account. In the described method, the integral is calculated between two consecutive maximums of the voltage and current product.. Digital dependencies that are easy to implement are used for the evaluation of the active power value. To measure the voltage and current signals, the authors used a system with a digital signal processor and an A/D converter with a multiplexer followed by dedicated digital filters. The active power measurement method was checked by building an instrument simulation model.</p></abstract>

The concept of active power measurement based on real-time digital processing of voltage and current signals is best’ introduced with a digital approximation definition. In this paper, the authors propose an integral calculation method based on Gregory’s expression, correction of integration period estimation and integration result correction taking values related to the ends of the integration period into account. In the described method, the integral is calculated between two consecutive maximums of the voltage and current product.. Digital dependencies that are easy to implement are used for the evaluation of the active power value. To measure the voltage and current signals, the authors used a system with a digital signal processor and an A/D converter with a multiplexer followed by dedicated digital filters. The active power measurement method was checked by building an instrument simulation model.

Active Power Measurement Based on Digital Processing of Voltage and Current Signals

Faculty of Electrical Engineering Automatics Computer Science and Biomedical Engineering

Faculty of Electrical and Computer Engineering

Technical Transactions

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

The concept of active power measurement based on real-time digital processing of voltage and current signals is best’ introduced with a digital approximation...

Active Power Measurement Based on Digital Processing of Voltage and Current Signals

Published Online: May 21, 2020

Page range: 127 - 132

Received: May 27, 2018

DOI: https://doi.org/10.4467/2353737XCT.18.092.8697

Keywords
active power, digital filtering FIR

© 2020 Andrzej Bień et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

Active Power Measurement Based on Digital Processing of Voltage and Current Signals

Published Online: May 21, 2020

Page range: 127 - 132

Received: May 27, 2018

DOI: https://doi.org/10.4467/2353737XCT.18.092.8697

Keywordsactive power, digital filtering FIR

© 2020 Andrzej Bień et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

Keywords
active power, digital filtering FIR