Search for dissertations about: "cable transients"
Showing result 1 - 5 of 11 swedish dissertations containing the words cable transients.
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1. Voltage Transients in the Field Winding of Salient Pole Wound Synchronous Machines : Implications from fast switching power electronics
Abstract : Wound Field Synchronous Generators provide more than 95% of the electricity need worldwide. Their primacy in electricity production is due to ease of voltage regulation, performed by simply adjusting the direct current intensity in their rotor winding. READ MORE
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2. Numerical Modelling of Transients in Electrical Systems
Abstract : This thesis deals with the numerical modelling of the response of electrical systems to transient surge voltages and currents caused by lightning. Electrical systems, when subjected to high amplitude transients behave in ways very different from its behaviour under normal operating conditions. READ MORE
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3. Characteristic of Surge Transfer Through Transformers : Study of Conventional Distribution Transformer and XLPE Cable Winding Transformer (Dryformer)
Abstract : Wide spread application and dependence on microelectronics based equipment in modern society has necessitated the study of power supply quality problems in low voltage power installations. In spite of improvements in surge protection, sensitive equipment connected to low-voltage side of distribution transformer has continued to fail due to transient voltages that are transferred through distribution transformer from high voltage circuits. READ MORE
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4. Analysis of High-Frequency Electrical Transients in Offshore Wind Parks
Abstract : In this thesis, a study of high frequency electromagnetic transient phenomena is performed. Models of various components needed for simulations of high frequency transients, such as transformers, cables and breakers are developed. READ MORE
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5. Transient control in low-voltage power installation networks and electronic systems
Abstract : Transient protection in a low-voltage power installation network and an electronic system isof vital importance since most of the activities of our society are very dependent on thereliability of low-voltage power installation networks and electronic systems. This thesisconcentrates upon several investigations which all deal with the evaluation and improvementof the protection measures of low-voltage power installation networks and electronic systemsagainst electrical transients. READ MORE