Search for dissertations about: "breaker"

Showing result 1 - 5 of 21 swedish dissertations containing the word breaker.

  2. 1. On the design of hybrid DC-breakers consisting of a mechanical switch and semiconductor devices

    Author : Jesper Magnusson; Göran Engdahl; Staffan Norrga; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; DC; circuit breaker; hybrid breaker; DC systems; DC; brytare; hybridbrytare; likström;

    Abstract : The interest of using direct current in networks for both transmission and distribution of power is increasing due to the higher efficiency compared to the alternating current used today. As no natural zero crossings exist in direct current, the interruption of fault currents becomes a challenge. READ MORE

  4. 2. Analysis of High-Frequency Electrical Transients in Offshore Wind Parks

    Author : Tarik Abdulahovic; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; very fast transient; surge protection; surge; transient overvoltage; restrikes; prestrikes; breaker; voltage escalation;

    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 for transformers, cables and breakers are developed. READ MORE

  5. 3. Analysis of High-Frequency Electrical Transients in Offshore Wind Parks

    Author : Tarik Abdulahovic; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; restrikes; very fast transient; surge protection; surge; voltage escalation; transient overvoltage; prestrikes; breaker;

    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

  6. 4. On reliability and maintenance modelling of ageing equipment in electric power systems

    Author : Tommie Lindquist; Roland Eriksson; Lina Bertling; George Anders; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Reliability; maintenance; electric power systems; circuit breaker; disconnector; thermography; Electric power engineering; Elkraftteknik;

    Abstract : Maintenance optimisation is essential to achieve cost-efficiency, availability and reliability of supply in electric power systems. The process of maintenance optimisation requires information about the costs of preventive and corrective maintenance, as well as the costs of failures borne by both electricity suppliers and customers. READ MORE

  7. 5. Towards self-driving microservices

    Author : Mohammad Reza Saleh Sedghpour; Johan Tordsson; Cristian Klein; Cesare Pautasso; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Microservices; Autonomic Computing; Service Mesh; Reliability; Circuit Breaker; Retry; Microservice Resiliency; Microservice Benchmarking; Reproducibility; Repeatability.; Computer Science; datalogi;

    Abstract : In recent years, microservice architecture has become a popular method for software system design and development. This involves creating applications with multiple small services, each with multiple instances, operating as independent processes. READ MORE