Effect of Terminating Resistance on High Frequency Behaviour of Rogowski Coil for Transient Measurements

被引：13
作者：
Shafiq, M. [1 ]
Lehtonen, M. [1 ]
Kutt, L. [1 ]
Hussain, G. A. [1 ]
Hashmi, M. [2 ]
机构：
[1] Aalto Univ, Dept Elect Engn, Helsinki, Finland
[2] VTT Tech Res Ctr Finland, Espoo, Finland
来源：
ELEKTRONIKA IR ELEKTROTECHNIKA | 2013年 / 19卷 / 07期
关键词：
Partial discharges; Rogowski coil; calibration; diagnostic; transients; measurement;
D O I：
10.5755/j01.eee.19.7.2070
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Partial Discharge (PD) current measurements have been widely used to assess the insulation condition of power components. Rogowski coil is a low cost current sensor specifically meant for high frequency transient diagnostics such as PDs in high voltage (HV) power apparatus. This paper presents the design of Rogowski coil for transient measurements. For the designed prototype of Rogowski coil, correct selection of terminating resistance is of high importance to calibrate its response for accurate measurement of the PD current waveforms. Effect of terminating resistance for the coil model is analysed based on theoretical, practical and simulated investigations. Simulated model of the coil is used to determine the behaviour of induced current through non-physical inductive and capacitive elements of Rogowski coil. The Electromagnetic Transient Program-Alternative Transient Program (EMTP-ATP) is used to implement and to analyze the model of Rogowski coil. The comparison of practical and simulated results validates the designed model of the coil. The paper explores EMTP-ATP as an efficient tool to analyze and modify the transient behaviour of Rogowski coil for high frequency pulse measurements.
引用
收藏
页码：22 / 28
页数：7
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