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Compensating the Harmonic Distortion Introduced by Instrument Transformers: An Improved Method Based on Frequency-Domain Polynomials

Related tags

#Active networks #Measurement Transformers #Power Quality

Publications - Paper

Compensating the Harmonic Distortion Introduced by Instrument Transformers: An Improved Method Based on Frequency-Domain Polynomials

The aim of this paper is to propose an enhanced technique to improve the accuracy of measurement transformers for harmonic measurements. The method compensates for the harmonic distortion of the fundamental with minimal computational complexity, avoiding over-parameterization of the model

Monitoring harmonic components is crucial in modern distribution networks, which are increasingly characterized by a high penetration of nonlinear devices and network sections interfaced with power electronic devices. In this context, the accuracy of harmonic measurements is significantly influenced by the performance of measurement transformers, which exhibit nonlinear behavior. This paper proposes an enhanced technique for accurately reconstructing network harmonics starting from the secondary of the transformer. The method relies on polynomial modeling and compensation for harmonic distortion introduced by the fundamental frequency, which is the most significant nonlinear effect for low-order harmonics. The structure is highly flexible, allowing adaptation to achieve the best trade-off between accuracy and model complexity while avoiding over-parameterization.

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Rif.RSE​

21005539

Destination​

AMPS 11TH IEEE International Workshop on Applied Measurements for Power Systems, Online 29 settembre 1 ottobre 2021

Publication Date

01 October 2021

Authors​

M. Faifer, R. Ottoboni, S. Toscani (Politecnico di Milano), C. Laurano (RSE S.p.A.)

Publication Type

Paper

Projects

Architecture and management models of the electrical system and grids (EvolveNet)

Related tags

#Active networks #Measurement Transformers #Power Quality

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