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Electrical insulation system is one of the most important part of the electrical equipment. However, also the weakest link in the chain of the reliability of the whole device. The main aim of this paper is to describe different kinds of defects of electrical insulation and their impact on the field distribution and on other parameters. It may lead to local overloading of insulation and to shortening...
Because of the financial savings and with respect for the environment, several efforts are made to replace AC voltage long distance transmission lines for DC voltage transmission lines. This may lead to increases of charging of insulation materials. The main aim of this paper is to describe the space charge accumulation in insulation material and its effect on local overloading of insulation material...
Partial discharges proved to be important diagnostic parameter during technical lifetime of operated electrical machines. Until now PD phenomena was well described and understood in technical society, especially for characteristic arrangement, e.g. corona, tip to plane, sphere to plane, and others. Most of the studies were done under AC voltage. However as DC transmission is concerned, more attention...
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