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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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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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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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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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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Energies, 2023 Instrument transformers are largely used to measure voltages and currents in public electricity networks. Their performance is essential for Power Quality measurements. Tests and procedures to estimate the effect of single influence factors are performed
Mohamed Agazar +2 more
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Energies, 2023 Power grids are a combined system where the electrical energy produced by the power plants is transmitted to consumers. This forms a specific interdependence where the recipients have a significant impact on the power quality.
Michal Kaczmarek, Ernest Stano
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Trends in Measuring Instrument Transformers for Gas-Insulated Switchgears: A Review
EnergiesVoltage and current measurements in high-voltage substations are fundamental for stable operation. Conventional instrument transformers (ITs) face challenges in gas-insulated switchgears (GISs), such as size, weight, accuracy limitations, and behavioral ...
Dong-Eon Kim +3 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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