NDLI: The analysis of the factors affecting the performance of Clamp Rogowski coil

Content Provider	IEEE Xplore Digital Library
Author	Zhang Zhou Sheng Bao Han Ma Ai Qing
Copyright Year	2014
Description	Author affiliation: Sch. of Electr. Eng., Shanghai Univ. of Electr. Power, Shanghai, China (Zhang Zhou Sheng; Bao Han; Ma Ai Qing)
Abstract	Clamp Rogowski coil current transformer (CT) with strong anti-interference ability, high installation flexibility and operational safety, are now being widely used to detect the partial discharge (PD) of the XLPE (cross-linked polyethylene) cables, especially in the situation where the cables are in operation and therefore needed to be on-line monitored in practical applications. Since Clamp Rogowski coil CT can be easily mounted on the cables without changing the structure of the cable accessories, a large degree of flexibility and convenience can be expected when they are used in electrical industries. Compared with uncut Rogowski coil CT, the windings of Clamp Rogowski coil CT are concentrated in half side and thus introduce air gap on the grounds that the core has to be cut into two parts. In this paper, the amplitude-frequency characteristics of Clamp Rogowski coil CT and uncut Rogowski coil CT were measured and analyzed in detail. During the measurement, a sine wave current with constant amplitude was input from the primary side of the coil, and the voltage amplitudes output from the secondary side of the coil were recorded by changing the frequency of the current. The experimental data were summarized and drawn into amplitude-frequency curves using Matlab software package. The comparative analysis of the experimental results showed that, within the frequency band of XLPE cable PD detection (500kHz~10MHz), the difference in the output amplitudes of uniformly-winding and unevenly-winding Rogowski coil CT is less than 3.2%, while the difference between those of Rogowski coil CT and uncut Rogowski coil CT is less than 6%. It also shows that the influences of uneven winding and air gas on the amplitude-frequency characteristics of the transformer is very small after clamp Rogowski coil sensors have been used. The findings of this work may trigger some useful conceptions in the design of modern electronic transformer.
Starting Page	1446
Ending Page	1450
File Size	586021
Page Count	5
File Format	PDF
ISBN	9781479950324
DOI	10.1109/POWERCON.2014.6993737
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-10-20
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coils Power cables Clamps Current transformers Partial discharges Windings Amplitude-frequency characteristics Air gap Clamp Rogowski
Content Type	Text
Resource Type	Article

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Evaluation of shielded Rogowski coil for measuring partial discharge signals

The development of transducer to detect partial discharge in XLPE cable based on electromagnetic coupling method

Detection of partial discharge in power transformers using Rogowski coil and multiresolution analysis

The high frequency characteristic of wideband Rogowski coil with asymmetric windings

Evaluation of unshielded Rogowski coil for measuring partial discharge signals

Comparative Performance Characteristics of Current Transformers and Rogowski Coils used for Protective Relaying Purposes

Transforming characteristics of the Rogowski coil current transformer with a digital integrator for high-frequency signals

The Study of Transient Performance for Electronic Current Transformer Sensor Based on Rogowski Coil

Digital Compensation of Rogowski Coil's Output Voltage

The analysis of the factors affecting the performance of Clamp Rogowski coil

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