Title
Overcoming Frequency Response Measurements of Voltage Transformers: An Approach Based on Quasi-Sinusoidal Volterra Models
Abstract
The most recent IEC standards about voltage transformers warn about nonlinearity, which may significantly impact the harmonic measurement performance. However, there is a lack of scientific literature about this topic: usually their characterization consists of frequency response measurements that are clearly not able to capture the nonlinear behavior. In this paper, an innovative approach based on recently developed simplified frequency-domain polynomial models is proposed. The method is applied to two different medium-voltage inductive transformers. Models are identified and validated with a large set of realistic primary waveforms injected by a proper setup. Experimental results confirm the remarkable accuracy of the proposed models especially for low-order harmonics, which are the most affected by nonlinearity.
Year
DOI
Venue
2019
10.1109/tim.2018.2871229
IEEE Transactions on Instrumentation and Measurement
Keywords
Field
DocType
Harmonic analysis,Power system harmonics,Voltage measurement,Instrument transformers,Frequency-domain analysis,Pollution measurement
Frequency domain,Current transformer,Nonlinear system,Frequency response,Voltage,Harmonic,Electronic engineering,Harmonic analysis,Harmonics,Mathematics
Journal
Volume
Issue
ISSN
68
8
0018-9456
Citations 
PageRank 
References 
1
0.39
0
Authors
10
Name
Order
Citations
PageRank
Marco Faifer17019.71
Christian Laurano254.70
Roberto Ottoboni34818.94
Sergio Toscani46420.60
Michele Zanoni554.02
Gabriella Crotti63111.33
Domenico Giordano7138.87
Luca Barbieri852.67
Marco Gondola992.63
paolo mazza10174.29