Evaluation of Uncertainty in AC Power Calculation with Asynchronously Sampled Data

7th Sensors & their Applications

Lindenthaler, D.^1 ; Zangl, H.^1

Institute of Electrical Measurement and Measurement Signal Processing, Graz University of Technology, 8010 Graz, Austria^1

关键词: Ac power;    Current signal;    Power estimations;    Sampled data;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/450/1/012043/pdf
DOI  :  10.1088/1742-6596/450/1/012043

来源: IOP

【 摘 要 】

This article presents a comparison of several standard based methods for determination of the effective and the apparent AC power from sampled voltage and current signals. The comparison is based on the accuracy achieved in three different measurement scenarios, which is evaluated by means of Monte-Carlo-simulations. The comparison shows that the accuracy of the power estimation from asynchronously sampled data can be as good as the power estimation from synchronously sampled data. This allows for a reduction of the effort for synchronization between voltage and current channels while the overall performance remains equal.