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The estimation of material parameters is an essential step during the design of high voltage direct current (HVDC) insulation systems. The key role of insulation coordination in power transformers is to provide the required insulation components among different voltage classes to prevent dielectric breakdown. The design of a feasible insulation for transformers requires understanding of electrical...
The occurrence of space charges has to be understood, in order to study the field distortion which is due to space charges. Hence, the investigation of space charge behavior and its origin in insulating liquids is necessary for design of optimal insulation system. It is important to know about the type of charge carriers present in insulating gap. Applying different DC stresses with various polarities...
The optimization of design and operation of converter transformers during test and operation needs understanding of insulation system behavior under AC, DC and mixed stress. In order to calculate the electrical field under all kinds of stresses, the material properties have to be known. The common metals exposed to noteworthy electric stress inside power transformers are copper (conductors) and aluminum...
The insulation system of power transformers is a key topic which has to be taken into account in order to achieve an optimized design and safe longterm operation. The design of feasible insulation for high voltage direct current transformers requires the understanding of field distributions in insulating materials in both AC and DC operation because the transient stresses are dependent on both conductivities...
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