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Inductive current transformer accuracy of transformation for the PQ measurements
Electric Power Systems Research, 2017Abstract Inductive current transformer made of magnetic cores with high permeability are used for accurate wideband transformation of distorted current required by the power quality (PQ) measurements. However, such solutions are often characterized by not acceptable additional secondary current distortion in condition of variation of primary current ...
Michal Kaczmarek
exaly +2 more sources
Electric Power Systems Research, 2015
Abstract In this paper the concept is discussed for evaluation of accuracy of inductive current transformer (CT) for transformation of distorted current higher harmonics. In proposed method the composite error (transformer correction factor) is determined for various operating conditions of tested CT in respect of primary currents rms value ...
Michal Kaczmarek
exaly +2 more sources
Abstract In this paper the concept is discussed for evaluation of accuracy of inductive current transformer (CT) for transformation of distorted current higher harmonics. In proposed method the composite error (transformer correction factor) is determined for various operating conditions of tested CT in respect of primary currents rms value ...
Michal Kaczmarek
exaly +2 more sources
Electric Power Systems Research, 2016
Abstract The aim of this paper is to present results explaining the phenomenon of inductive current transformers (CT) additional secondary current distortion in condition of variation of their primary current rms value caused by dips and interruptions of the power line's voltage.
Michal Kaczmarek
exaly +2 more sources
Abstract The aim of this paper is to present results explaining the phenomenon of inductive current transformers (CT) additional secondary current distortion in condition of variation of their primary current rms value caused by dips and interruptions of the power line's voltage.
Michal Kaczmarek
exaly +2 more sources
Electronics (Switzerland), 2023 In this paper, the electromagnetic characteristics of a novel integrated multi-winding inductive filtering converter transformer, including two parallel-connected delta filter windings with zero impedance, are studied.
Jianying Li +2 more
exaly +2 more sources
Effect of temperature on the accuracy of inductive current transformers
2018 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2018The paper deals with the evaluation of the accuracy variation of inductive current transformers vs. ambient temperature. There is a lack of information regarding if and how the accuracy of inductive current transformers changes with respect to temperature variations. To this purpose, in this paper a proper setup is presented and used for evaluating the
Mingotti, Alessandro +3 more
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Design and Calibration of Inductive Current Transformer
Advanced Materials Research, 2013In this paper, the design principle of inductive current transformer is introduced at first. Then an inductive current transformer is produced by applying the structure of two-stage inductive voltage divider. And finally, the error of the sample machine is given through examine test, and the suggestion for improving the machine is given based on the ...
Quan Wang, Huan Wang, Qiong Xiang
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2015 Modern Electric Power Systems (MEPS), 2015
In the paper the influence of conductive disturbances on transformation of fault current by inductive protective current transformers is described. Analysis of the results from laboratory studies show, that for such condition primary current up to which the current transformer will comply with the requirements for composite/ratio error is decreased ...
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In the paper the influence of conductive disturbances on transformation of fault current by inductive protective current transformers is described. Analysis of the results from laboratory studies show, that for such condition primary current up to which the current transformer will comply with the requirements for composite/ratio error is decreased ...
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IEEE Transactions on Magnetics, 2015
Inductive instrument transformers are widely-used to measure currents in the power grid. Harmonics currents increase due to the proliferation of nonlinear equipment in the power grid. At higher frequencies, eddy currents inside the core increase, causing a change of the electrical parameters of the current instrument transformer (CT).
C. Jaschke, P. Schegner
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Inductive instrument transformers are widely-used to measure currents in the power grid. Harmonics currents increase due to the proliferation of nonlinear equipment in the power grid. At higher frequencies, eddy currents inside the core increase, causing a change of the electrical parameters of the current instrument transformer (CT).
C. Jaschke, P. Schegner
openaire +1 more source
Electric Power Systems Research, 2014
Abstract The aim of the paper is to present results explaining the phenomena of the inductive current transformers (CTs) metrological properties deterioration for the transformation of the distorted currents. In the article the influence of the conductive disturbances on their accuracy of transformation of the distorted signal is described.
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Abstract The aim of the paper is to present results explaining the phenomena of the inductive current transformers (CTs) metrological properties deterioration for the transformation of the distorted currents. In the article the influence of the conductive disturbances on their accuracy of transformation of the distorted signal is described.
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Concordia Transform-Based Current Analysis for Induction Motor Diagnosis
Key Engineering Materials, 2013This paper presents a new approach for bearing defect diagnosis in induction motor by taking advantage of three-phase stator current analysis based on Concordia transform. The current signature caused by bearing defect is firstly analyzed using an analytic model.
Jin Jiang Wang +2 more
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