Journal ArticleDOI
Parameters Identification and Modeling of High-Frequency Current Transducer for Partial Discharge Measurements
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TLDR
In this paper, a lumped parameter model of RC is presented and an experiment-based methodology is developed to determine its parameters for detection and measurement of high-frequency (pulsed) signals such as partial discharge (PD) current pulses.Abstract:
Rogowski coil (RC) is a low-cost, air-cored, and flexible induction sensor for nonintrusive condition monitoring and thus can be used in a variety of applications. In this paper, a lumped parameter model of RC is presented and an experiment-based methodology is developed to determine its parameters. The performance of the RC is analyzed for detection and measurement of high-frequency (pulsed) signals such as partial discharge (PD) current pulses. A simple and efficient technique of numerical integration is adopted to avoid the conventional type of expensive and complex design analogue integrators. RC is modeled and simulated in the alternative transient program-electromagnetic transient program environment. The designed coil is tested to measure PDs in the laboratory. Simulated and experimental performance of RC is compared with a high-frequency current transformer. This comparison shows a good match and, hence, validates the design of RC for PD applications.read more
Citations
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Journal ArticleDOI
The Rogowski Coil Principles and Applications: A Review
TL;DR: The Rogowski coil is analyzed from different points of view, including different integration techniques in the output stage, models for the Rogowski Coil, experimental methods for parameter measurement in models, and method for determining the damping resistor.
Journal ArticleDOI
Application of an Efficient Rogowski Coil Sensor for Switch Fault Diagnosis and Capacitor ESR Monitoring in Nonisolated Single-Switch DC–DC Converters
TL;DR: In this article, a new type of Rogowski coil sensor is proposed, which captures the inductor current derivative, which contains suitable signatures for switch fault diagnosis and capacitor lifetime monitoring in non-isolated single-switch dc-dc converters.
Journal ArticleDOI
Effect of geometrical parameters on high frequency performance of Rogowski coil for partial discharge measurements
TL;DR: In this article, the Rogowski coil is employed as a PD measuring sensor and a comparative study of variation in mechanical design features provides a brief guideline to select the optimal design of the coil.
Journal ArticleDOI
Diagnostic expert system of transformer insulation systems using the acoustic emission method
TL;DR: In this paper, the authors describe an expert diagnostic system, which uses an acoustic method to asset the state of the measured power transformer insulation, performed during their normal work in industrial conditions.
Journal ArticleDOI
Condition monitoring of high voltage transformers using Fiber Bragg Grating Sensor
TL;DR: In this article, a Fiber Bragg Grating (FBG) based optical PD sensor has been developed for online detection of partial discharge (PD) in HV power transformers.
References
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Journal ArticleDOI
Using Rogowski coils for transient current measurements
D.A. Ward,J.La.T. Exon +1 more
TL;DR: The Rogowski-coil method of measuring electric current has developed from a "laboratory curiosity" to a versatile measuring system with many applications throughout industry and in research as mentioned in this paper.
Proceedings ArticleDOI
An overview of integratable current sensor technologies
TL;DR: An overview of current sensing technologies suitable for packaging into integrated power electronics modules and integrated passive power processing units, such as integrated shunts and integratable Rogowski coils technologies, is given in this paper.
Journal ArticleDOI
Machinable Rogowski coil, design, and calibration
TL;DR: The machinable Rogowski coil as mentioned in this paper is a special type of mutual inductors often used to measure high AC and transient currents, and its performance is compared to that of other designs.
Journal ArticleDOI
Partial discharge. III. Cavity-induced PD in solid dielectrics
TL;DR: In this paper, the authors investigated the relationship between the magnitude of the measured, effective, partial discharge (PD) to the size, shape, and position of the cavity within a solid dielectric system.
Journal ArticleDOI
Self-contained high-pressure cell, apparatus, and procedure for the preparation of encapsulated proteins dissolved in low viscosity fluids for nuclear magnetic resonance spectroscopy
TL;DR: The design of a sample cell for high-performance nuclear magnetic resonance (NMR) at elevated pressure is described, which has several advantages, including relatively low cost, excellent NMR performance, high-pressure tolerance, chemical inertness, and a relatively large active volume.