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Transformer winding temperature is a function of the load current and ambient temperature. As the maximum winding temperature at steady state operation is limited by IEEE/IEC standards, the higher the ambient temperature, the lower the permitted current. When the high temperature warning forecast from government climatological stations is available, the maximal load can be pre-calculated and, if necessary,...
The insulation breakdown caused by micro-voids discharge in solid dielectrics is one of the main causes of insulation failure of the electrical equipment. The concentration of electric field arose from micro-voids can't be measured from the outside directly, so the theoretical calculation is of great significance to the equipment insulation design, the work requirements of the electric field and fault...
The transmission capacity of overhead transmission lines is limited largely by its operation temperature, which is determined by the competition between the heat generation by load current and the heat dissipation into the environment. The ohmic heat generation is a function of the conductor resistivity, which is a function of its temperature and current distribution inside the conductor, taking the...
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