Search for dissertations about: "power distribution protection"

Showing result 21 - 25 of 37 swedish dissertations containing the words power distribution protection.

  2. 21. Electromagnetic Interference in Distributed Outdoor Electrical Systems, with an Emphasis on Lightning Interaction with Electrified Railway Network

    Author : Nelson Theethayi; Rajeev Thottappillil; Farhad Rachidi; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical engineering; Electromagnetic Compatibility EMC ; Lightning; Lightning Protection; Transmission Lines; Electromagnetic Wave Propagation; Underground Cables; Grounding; Electromagnetic Transients; Electromagnetic Interference; Shielding Effectiveness; Railway Systems; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik;

    Abstract : This thesis deals with the electromagnetic compatibility (EMC) problems of distributed electrical networks, especially that caused by lightning to electrified railway. Lightning transients were found to damage important devices that control train movements, causing traffic stoppage and delays. READ MORE

  4. 22. Reliability Evaluation of Distribution Systems Considering Failure Modes and Network Configuration

    Author : Sajeesh Babu; Patrik Hilber; Chanan Singh; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Power distribution networks are recognized as the constituent part of power systems with the highest concentration of failure events. Even though the faults in distribution networks have a local effect when compared to the generation and transmission sides, major contingency escalation events are being more frequently reported from this section. READ MORE

  5. 23. Characteristic of Surge Transfer Through Transformers : Study of Conventional Distribution Transformer and XLPE Cable Winding Transformer (Dryformer)

    Author : Mighanda Manyahi; Vladmiir Rakov; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; Physics; Fysik; Electricity; Esp The Study Of Transients and Discharges; elektricitetslära; ssk studiet av transienter och urladdning;

    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

  6. 24. The “Dark Side” of Marine Spatial Planning : A study of domination, empowerment and freedom through theories of discourse and power

    Author : Ralph Voma Tafon; Michael Gilek; Fred P. Saunders; Wesley Flannery; Södertörns högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; marine spatial planning; discourse; power; domination; empowerment; freedom; conflict; resistance; small-scale fisheries; offshore wind energy; Environmental Studies; Miljövetenskapliga studier; Östersjö- och Östeuropaforskning; Baltic and East European studies;

    Abstract : This thesis aims to contribute to the marine spatial planning (MSP) literature by elaborating a robust theoretical account of power for a more rigorous and balanced critical analysis of MSP. Conceived as a problem-solving regime, MSP has emerged as a radical approach to govern the use and protection of marine resources. READ MORE

  7. 25. Modeling and Characterization of nonlinear Materials for Protection of Optical Sensors

    Author : Anders Eriksson; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : This thesis concerns nonlinear materials and experimental techniques for optical power limiting applications. Theoretical models to analyze and simulate related measurements were studied. Two different numerical modeling tools for propagation of optical radiation through optically nonlinear media were developed. READ MORE