Search for dissertations about: "lifetime distribution"

Showing result 1 - 5 of 95 swedish dissertations containing the words lifetime distribution.

  1. 1. Lifetime modeling and management of transformers

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Johanna Rosenlind; KTH.; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; transformers; lifetime modeling; asset management; thermal modeling; lifetime estimation;

    Abstract : This work have studied and developed lifetime estimation methods for the power transformer and how these could be used for asset management purposes. It is researchperformed in the intersection of the fields of reliability theory, statistical analysis, and stochastic process theory applied to lifetime estimations and management of transformers. READ MORE

  2. 2. Lifetime Performance Assessment of Thermal Systems Studies on Building, Solar and Disctrict Heating Applications

    University dissertation from Stockholm : KTH

    Author : Bojan Stojanovic; Högskolan i Gävle.; KTH.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Civil engineering and architecture Building engineering; TEKNIKVETENSKAP Samhällsbyggnadsteknik och arkitektur Byggnadsteknik; TECHNOLOGY Materials science; TEKNIKVETENSKAP Teknisk materialvetenskap; lifetime performance; degradation; assessment; modelling; field exposure; thermal components and systems; Lifetime performance; thermal components and system;

    Abstract : The main questions today concerning thermal systems are their economical and environmental impacts. These entities are generally, at present, assessed on the basis of operation performances of newly installed/designed systems, during an assumed lifetime period. READ MORE

  3. 3. Aspects of historical data and health criteria for drinking water network replacement strategies

    University dissertation from Stockholm : KTH

    Author : Annika Malm; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; pipe rehabilitation; water distribution network; cost-benefit analysis; Pipe replacement; leakage control; lifetime distribution; pipe failure; health risk; strategic planning; asset management;

    Abstract : The drinking water distribution network represents a major proportion of the investments and capital assets of a water utility. Consequently, qualified insight into future replacement needs provides water utilities with a foundation for financial planning. READ MORE

  4. 4. Condition measuring and lifetime modelling of disconnectors, circuit breakers and other electrical power transmission equipment

    University dissertation from Stockholm : Kungliga Tekniska högskolan

    Author : Per Westerlund; KTH.; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; reliability; maintenance; condition monitoring; disconnector; circuit breaker; Weibull distribution; prediction; risk analysis; decision making; beta distribution; Electrical Engineering; Elektro- och systemteknik;

    Abstract : The supply of electricity is important in modern society, so the outages of the electric grid should be few and short, especially for the transmission grid. A summary of the history of the Swedish electrical system is presented. The objective is to be able to plan the maintenance better by following the condition of the equipment. READ MORE

  5. 5. Wireless Sensor Networks in Smart Cities The Monitoring of Water Distribution Networks Case

    University dissertation from KTH Royal Institute of Technology

    Author : Du Rong; KTH.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Integer Programming; Nonconvex Optimization; Network Lifetime; Dynamic; Electrical Engineering; Elektro- och systemteknik;

    Abstract : The development of wireless sensor networks (WSNs) is making it possible to monitor our cities. Due to the small size of the sensor nodes, and their capabilities of transmitting data remotely, they can be deployed at locations that are not easy or impossible to access, such as the pipelines of water distribution networks (WDNs), which plays an important role in protecting environment and securing public health. READ MORE