Mirosław Lukowicz

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Current and voltage transformers influence the criterion values measurement particularly during disturbances in the system. Certain construction limitations of instrument transformers may in some cases cause maloperation or substantial delay in tripping of the protective relays. Current transformer saturation and discharging of the capacitive voltage(More)
The paper addresses the problems of digital modelling of MV networks with the focus on phenomena having a significant impact on the reliability of resulting data subsequently used for testing protection relays. In ATPDraw program the Ferranti current transformer (core-balance current transformer) model was developed that allows taking into account the(More)
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