NDLI: Measurement of the resistive current of MOA based on an improved equivalent model

Content Provider	IEEE Xplore Digital Library
Author	Yongsen Han Huan Zheng Zhonghua Li
Copyright Year	2015
Description	Author affiliation: Key Lab. of Eng. Dielectr. & Its Applic., Harbin Univ. of Sci. & Technol., Harbin, China (Yongsen Han; Huan Zheng; Zhonghua Li)
Abstract	Most of the methods available for the resistive current of metal oxide surge arrester are based on a simplified equivalent model, which consists of a nonlinear resistance in parallel with a constant capacitance, and there always exists a phase discrepancy between the resistive current and the applied voltage, it may be caused by the nonlinearity of the equivalent capacitance. In this paper, an improved equivalent model consisting of a nonlinear conductance and a nonlinear capacitance in parallel is presented. A new time-domain resistive current method is then proposed. The time-domain equations of every current component on the applied voltage are deduced based on the improved model. The circuit parameters in these time-domain equations are calculated by least square and then are substituted into the time-domain equations to obtain the resistive current and the capacitive current. The capacitive current compensation method and the proposed method are used to obtain the resistive current and to study the influence of the nonlinearity of the conductance and capacitance on calculation accuracy. The simulation results show that the proposed method have little error when the applied voltage and the total leakage current are noiseless. The resistive current obtained by the proposed method is in phase with the applied voltage, there no exists a phase discrepancy between them. Besides, the proposed method is hardly affected by the nonlinearity of the equivalent model.
Starting Page	1003
Ending Page	1006
File Size	788433
Page Count	4
File Format	PDF
ISSN	21609241
e-ISBN	9781479989034
DOI	10.1109/ICPADM.2015.7295444
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-19
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Capacitance Leakage currents Integrated circuit modeling Mathematical model Surge protection Time-domain analysis Surges resistive current capacitive current MOA least square
Content Type	Text
Resource Type	Article

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