On the Long-Period Accuracy Behavior of Inductive and Low-Power Instrument Transformers [PDF]
Sensors, 2020 The accuracy evaluation of instrument transformers is always a key task when proper control and management of the power network is required. In particular, accuracy becomes a critical aspect when the grid or the instrumentation itself is operating at ...
Alessandro Mingotti +3 more
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Characterization of Instrument Transformers under Realistic Conditions: Impact of Single and Combined Influence Quantities on Their Wideband Behavior [PDF]
Sensors, 2023 Instrument transformers (ITs) play a key role in electrical power systems, facilitating the accurate monitoring and measurement of electrical quantities.
Palma Sara Letizia +10 more
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How Instrument Transformers Influence Power Quality Measurements: A Proposal of Accuracy Verification Tests [PDF]
Sensors, 2022 The integration of renewable energy sources on a large scale in the electrical energy distribution systems, as well as the widespread of non-linear loads, has led to a significant increase in power quality (PQ) disturbances.
Gabriella Crotti +10 more
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Reference High-Voltage Sensing Chain for the Assessment of Class 0.1-WB3 Instrument Transformers in the Frequency Range up to 150 kHz According to IEC 61869 [PDF]
SensorsThis paper presents the development and characterization of a reference high-voltage sensing chain for the calibration and conformity assessment of instrument transformers with Class 0.1-WB3, in the extended frequency range up to 150 kHz, according to ...
Mohamed Agazar +2 more
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Toward the Standardization of Limits to Offset and Noise in Electronic Instrument Transformers [PDF]
Sensors, 2020 The scenario of instrument transformers has radically changed from the introduction of the Low-Power version, both passive and active. The latter type, typically referred to as Electronic Instrument Transformers (EITs), has no dedicated standard within ...
Alessandro Mingotti +2 more
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Power Grids and Instrument Transformers up to 150 kHz: A Review of Literature and Standards [PDF]
SensorsThe phenomenon of high-frequency distortion (HFD) in the electric grids, at both low-voltage (LV) and medium-voltage (MV) levels, is gaining increasing interest within the scientific and technical community due to its growing occurrence and the ...
Mohamed Agazar +12 more
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Dielectric Properties of Transformer Resin Under Varying Conditions: Impact on Instrument Transformer Stability and Accuracy [PDF]
SensorsThe accuracy of instrument transformers (ITs) is vital for the accurate measurement of electrical quantities. However, their performance is influenced by various factors during operation, including environmental conditions such as temperature, pressure ...
Simone Vincenzo Suraci +5 more
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Experimental Validation of Simple Power Quality Indices for Frequency Content Assessment up to 150 kHz [PDF]
SensorsThe power system is evolving with the integration of new technologies, including electronic devices and renewable energy sources, which are increasingly used to support new applications, reduce dependence on fossil fuels, and drive system innovation ...
Christian Betti +3 more
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Method for Internal Fault Testing of Instrument Transformers With Sectioned Active Parts
IEEE Access, 2021 Relevant international instrument transformer standards specify internal arc testing to prove the transformer behavior under internal fault conditions. However, the test is defined in a way that does not recognize that it is possible to limit and reduce ...
Dora Gazivoda +3 more
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Modern Methods of Construction Problem Solving in Designing Various Types of Instrument Transformers
Energies, 2022 Current and voltage instrument transformers are essential elements of the power system. They work like transformers but do not transmit power. Their task is to accurately transform currents or voltages during system operation, which are then used for ...
Elzbieta Lesniewska
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