Circuit-based method for extracting the resistive leakage current of metal oxide surge arrester

Abstract

Resistive leakage current based condition assessment of metal oxide surge arrester (MOSA) is one of the most extensively employed technique to monitor its degradation. An extraction method is customarily required to extract the resistive component from the total leakage current. The existing methods to extract the resistive current are complex and less accurate. Therefore, this paper describes a simple and accurate circuit-based method to extract the resistive current using equivalent model and measured leakage current of the arrester. The accuracy of the proposed method is validated through experimental results on ABB’s 120 kV surge arrester, EMTP and QuickField software simulations. The performance of the method is also analyzed and verified experimentally on 72, 180 and 240 kV rated ABB’s surge arresters. The obtained results of resistive leakage current have shown the maximum error of 0.001%. Simple and easier computational steps with higher accuracy are the key benefits of the proposed technique.

Leakage Current Measurements of Surge Arresters

“…New methods of determining the resistive components and their practical applications leading to the online diagnostics of limiters are still described in the literature [29][30][31][32][33][34][35][36][37][38][39]. For example, an interesting solution is the online method of measuring the resistive components proposed in [29], which uses a remote non-simultaneous method of measuring the resistive current (RNS).…”

Investigate the maximum power point of photovoltaic system at different environmental conditions

“…The proposed photovoltaic system consists of a photovoltaic panel, DC/DC converter, regulator, and a load. Figure 1 shows the photovoltaic system implemented in the MATLAB/Simulink software package [21]. The input parameters in the model are the solar allowance Gt, the temperature of the cell Tc and the current of the Ipv panel, while the output parameters are the panel control voltage and the power of the panel Ppv.…”

An analysis of manual and autoanalysis for submicrosecond parameters in the typical first lightning return stroke

“…The (1) shows a part of the algorithm involves in this research. The t0 (k-1) is the time of the amplitude at the end of the zero-crossing time duration while the t0 (k) is the time of the amplitudes at the start of the zero-crossing duration.…”

“…It was begun from the work of Benjamin Franklin until recently, many investigations reveal the mysteries behind this phenomenon. The lightning is immense electrical energy which occurs less than a second [1]- [3]. There are thousands of amperes released when the lightning struck [4]- [7].…”