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A new current decomposition method based on multiple linear regression is presented. The time-domain equations of every current component on the applied voltage are deduced based on an improved equivalent model of the metal–oxide surge arrester (MOA). The capacitive current compensation method and the proposed method are used to decompose the total leakage current and to study the influence of the...
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...
The prominent feature of the degradation of metal oxide surge arrester is an obvious increase of the resistive current, especially its fundamental and third harmonic, so it is very important to measure the resistive current. In this paper, a new method for the measurement of the resistive current is presented. At first, the time-domain equations of the resistive current, the capacitive current and...
Under the step voltage, the non-linear conductivity dielectrics have the function of grading the electric field. But such materials have been applied extensively under AC electric field, and insulating materials damaged mostly under impulse voltage. The research on the AC response characteristic presents the foundations for the development and application of non-linear insulation dielectrics. In this...
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