Novel Calibration systems for the dynamic and steady-state testing of digital instrument transformers

Chen, Yeying; Crotti, G.; Dubowik, Alexander; Letizia, Palma Sara; Mohns, E.; Luiso, Mario; Bruna, Jorge

doi:10.1109/amps50177.2021.9586040

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…For example, [ 25 , 26 ] present a calibration system for ITs. In [ 27 ], the authors studied the calibration of direct current (DC) current transformers (CT); while in [ 28 ] it was conducted for digital ITs. A calibration procedure for legacy CTs was presented in [ 29 ], while different kinds of LPITs were calibrated in [ 30 , 31 , 32 ].…”

Section: Importance Of Testingmentioning

confidence: 99%

Accuracy Type Test for Rogowski Coils Subjected to Distorted Signals, Temperature, Humidity, and Position Variations

Mingotti

Costa

Peretto

et al. 2022

Sensors

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Low-Power Instrument Transformers (LPITs) are becoming the first choice for distributed measurement systems for medium voltage networks. However, there are still a lot of challenges related to their operation. Such challenges include their accuracy variation when several influence quantities are acting on them. Among the most significant influence quantities are temperature, electromagnetic field, humidity, etc. Another aspect that increases the importance of studying the LPITs’ accuracy behavior is that, once installed, they cannot be calibrated for several years; hence, one cannot compensate for in-field conditions. Hence, this work aims at introducing a simple type test for a specific LPIT, the Rogowski coil. First, an experimental setup to assess the effect of temperature, humidity, and positioning on the power quality accuracy performance of the Rogowski coil is described. Second, from the results and the experience of the authors it has been possible to design a specific type test. The test has the aim of finding the limits of the accuracy variations of a single Rogowski coil. Afterwards, such limits can be used to compensate for the in-field measurements, obtaining an overall higher accuracy. The results of this work may contribute to the always-evolving standardization work on LPITs.

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Section: Importance Of Testingmentioning

confidence: 99%

Accuracy Type Test for Rogowski Coils Subjected to Distorted Signals, Temperature, Humidity, and Position Variations

Mingotti

Costa

Peretto

et al. 2022

Sensors

View full text Add to dashboard Cite

show abstract

A Simple Classification Method for Evaluating Influence Factors Affecting Instrument Transformer Accuracy

Mingotti,

Tinarelli,

Peretto

2024

2024 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

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Simplifying Rogowski Coil Modeling: Simulation and Experimental Verification

Mingotti,

Betti,

Tinarelli

et al. 2023

Sensors

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The integration of renewable energy sources, electric vehicles, and other electrical assets has introduced complexities in monitoring and controlling power networks. Consequently, numerous grid nodes have been equipped with sensors and complex measurement systems to enhance network observability. Additionally, real-time power network simulators have become crucial tools for predicting and estimating the behavior of electrical quantities at different network components, such as nodes, branches, and assets. In this paper, a new user-friendly model for Rogowski coils is presented and validated. The model’s simplicity stems from utilizing information solely from the Rogowski coil datasheet. By establishing the input/output relationship, the output of the Rogowski coil is obtained. The effectiveness and accuracy of the proposed model are tested using both simulations and commercially available Rogowski coils. The results confirm that the model is simple, accurate, and easily implementable in various simulation environments for a wide range of applications and purposes.

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Novel Calibration systems for the dynamic and steady-state testing of digital instrument transformers

Cited by 3 publications

References 5 publications

Accuracy Type Test for Rogowski Coils Subjected to Distorted Signals, Temperature, Humidity, and Position Variations

Accuracy Type Test for Rogowski Coils Subjected to Distorted Signals, Temperature, Humidity, and Position Variations

A Simple Classification Method for Evaluating Influence Factors Affecting Instrument Transformer Accuracy

Simplifying Rogowski Coil Modeling: Simulation and Experimental Verification

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