The system of analysis of degradau00c7u00e7o of varistors u00e0xido of zinc (ZnO) using the parameters of the model Langevin modified

摘要

The system of analysis of degradau00c7u00e7o of varistors u00e0xido of zinc (ZnO) using the parameters of the Langevin model modified.It 's in the evaluation method of the useful life of the arrester using the Langevin function are modified, used initially to represent the magnitudes, magnetic field and induction in ferromagnetic materials, adapted to the magnitudes of characteristic curve of the varistor d own The lightning arrester, voltage and current.With the measurement of the variation of the parameters of the model of the lightning rod using the Langevin function modified adjusted over the life of the lightning rod, assessing the functional state of the arrester based on the variation of three parameters of the developed model of varistors lightning S, using a measurement system of leakage current of the lightning rod.With techniques for obtaining the portion of resistive current that flows through the varistor, and techniques for determination of the parameters of the model using a software to meet the parameters of the model of the varistor.