Research of the Effect of Displacement Primary Winding of a Measuring Current Transformer Based on the Rogowski Coil on the EMF of Secondary Winding

Oganyan, Roman; Lankin, M. V.; Gorbatenko, N. I.

doi:10.1109/icieam48468.2020.9111962

Cited by 4 publications

(3 citation statements)

References 11 publications

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“…Regarding maintenance, the split-core CT presents a greater risk of accidents since its secondary terminals can generate high voltages if they are open [26]. Concerning the Rogowski coil, the absence of the ferromagnetic core provides a series of advantages, such as greater precision as it does not suffer from the phenomenon of saturation, lower cost, and a frequency response much better than that of the split-core CT, responding quickly to high changes in the current value [26][27][28][29]. The Rogowski coil is also immune to electromagnetic interference [27].…”

Section: Applied Technologiesmentioning

confidence: 99%

“…The Rogowski coil is also immune to electromagnetic interference [27]. As a disadvantage, the relative position of the conductor inside the coil can influence the measurement [26,29]; however, since the purpose of this project is to monitor the transformer load, this measurement variation is small. In the article [30], a brief comparison between the Rogowski coil and the split CT is presented.…”

Section: Applied Technologiesmentioning

confidence: 99%

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Application Study in the Field of Solutions for the Monitoring Distribution Transformers of the Overhead Power Grid

Chaves

Martins

Martins³

et al. 2021

Energies

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This paper will present the development and application of overhead transformers of the distribution grid, as well as the different technologies used for the gathering of electrical quantities, in the field of a monitoring solution. The solution reports the values of the quantities and alarms of operation remotely and almost in real-time. The development of this solution seeks to provide an electrical grid with greater reliability, proposing the reduction of KPIs (Key Performance Indicator), such as SAIDI (System Average Interruption Duration Index) and SAIFI (System Average Interruption Frequency Index), through more transparent monitoring of the behavior of the electrical distribution grid and its equipment. Through the research and development (R&D) project Urban Futurability, ENEL (Ente nazionale per l’energia elettrica) Distribution São Paulo seeks to apply the solution by implementing the concept of smart grids, an idea that has been growing each year by virtue of technological developments and the employment of new sensors in electrical distribution grids. Urban Futurability seeks to innovate the automation area, digital twin, and construction enhancement in the Vila Olímpia neighborhood of São Paulo, Brazil.

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Section: Applied Technologiesmentioning

confidence: 99%

Section: Applied Technologiesmentioning

confidence: 99%

Application Study in the Field of Solutions for the Monitoring Distribution Transformers of the Overhead Power Grid

Chaves

Martins

Martins³

et al. 2021

Energies

View full text Add to dashboard Cite

show abstract

“…For instance, [24][25][26][27] deal with the effect of temperature on ITs, while [28] studies the effect of moisture. Finally, electromagnetic compatibility, frequency, and positioning issues are discussed in [29][30][31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Conductor Positioning on Low-Power Current Transformers: Inputs for the Next IEC 61869-10

2021

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Low-power instrument transformers (LPITs) are spreading among the distribution network thanks to their features (e.g., compactness, lightness, enhanced bandwidth, etc.). It is then a fundamental to guide users and manufacturers to a correct usage and manufacturing of the LPITs. Technical committees, which are in charge of writing dedicated standards, often tackle such a task. Focusing on the current type of LPITs, the low-power current transformers (LPCTs), the associated standard is the IEC 61869-10, which is going to be improved in 2021. To this purpose, the work aims at providing new inputs for the future version of such a standard. In particular, the focus is pointed towards the effects of the conductor positioning on the window-type LPCT accuracy. Literature and gained experience in the field are the two pillars that have been used to refine the outcomes of the work, which are provided in terms of suggestions for each technical aspect, as discussed in the standard, related to LPCTs.

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Combined Effect of Temperature and Humidity on Distorted Currents Measured by Rogowski Coils

Costa

Mingotti

Peretto

et al. 2022

2022 20th International Conference on Harmonics &Amp; Quality of Power (ICHQP)

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The necessity of accelerating towards carbon neutrality has been further pushed in recent times. Therefore, with the aim of developing smart grids, new Intelligent Electronic Devices (IEDs) are being widely installed. In this regard, Low Power Current Transformers (LPCTs) are replacing traditional inductive current transformers (CTs). Among these, Rogowski coils feature high linearity, reduced dimensions, and wide bandwidth in comparison to CTs. Hence, this work presents a study on a particular type of LPCT, the Rogowski coil, which is extensively used nowadays. In detail, temperature and humidity are simultaneously applied to three commercial Rogowski coils when measuring off-nominal, hence distorted, currents. The LPCTs performances are evaluated in terms of power quality indexes, Total Harmonic Distortion (THD) and single harmonic evaluation. From the results, THD is not significantly affected by the combined temperature/humidity presence. However, a deep analysis on the single harmonic demonstrated how they are strongly correlated to such influence quantities. It is interesting to highlight that each of the three devices under test present different behaviors. It is then crucial to in deep the investigation on the influence quantities affecting LPCTs. Furthermore, International Standards should include new details and test procedures to assess the effect on the LPCTs accuracy due to such quantities.

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Research of the Effect of Displacement Primary Winding of a Measuring Current Transformer Based on the Rogowski Coil on the EMF of Secondary Winding

Cited by 4 publications

References 11 publications

Application Study in the Field of Solutions for the Monitoring Distribution Transformers of the Overhead Power Grid

Application Study in the Field of Solutions for the Monitoring Distribution Transformers of the Overhead Power Grid

Effect of the Conductor Positioning on Low-Power Current Transformers: Inputs for the Next IEC 61869-10

Combined Effect of Temperature and Humidity on Distorted Currents Measured by Rogowski Coils

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