A study of mechanical and electrical properties of coupled beams for understanding power transformer windings

    Research output: ThesisMaster's Thesis

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    Abstract

    [Truncated abstract] Power transformers are one of the main devices in found power systems. Reliability, power quality and economic cost are affected by the transformer’s health conditions. Catastrophic failures of power transformers may have a serious environmental impact, such as fire and transformer oil spill. Therefore, the failures of power transformers are of much concern and are investigated extensively. According to practical historical data, it is clear that a significant percentage of transformer failures is caused by winding problems, such as winding deformations caused by loss of clamping pressure or by the high electrodynamic forces appearing during short circuit, and insulation failures caused by aging or moisture issues. As a result, development of condition monitoring systems for the winding of power transformers holds promise towards cost reduction throughout power transformers' life cycle and towards an increase in the availability and reliability of power transformers. This thesis results from a study on the mechanical and electrical properties of a coupled beams system. Such study is relevant to the understanding of some basic features of power transformers' winding. ... In this thesis, the mechanical and electrical responses of the coupled beams are modelled experimentally and theoretically. The variable parameters of the coupled beams include the gap between the beams, the number of insulation blocks in the gap, and the moisture contents of the insulation blocks.
    Original languageEnglish
    QualificationMasters
    Publication statusUnpublished - 2009

    Fingerprint

    Transformer windings
    Power transformers
    Electric properties
    Mechanical properties
    Insulation
    Moisture
    Insulating oil
    Electrodynamics
    Oil spills
    Condition monitoring
    Power quality
    Cost reduction
    Short circuit currents
    Environmental impact
    Life cycle
    Fires
    Aging of materials
    Health
    Availability
    Economics

    Cite this

    @phdthesis{337120444e874200bb0a4ec09541228b,
    title = "A study of mechanical and electrical properties of coupled beams for understanding power transformer windings",
    abstract = "[Truncated abstract] Power transformers are one of the main devices in found power systems. Reliability, power quality and economic cost are affected by the transformer’s health conditions. Catastrophic failures of power transformers may have a serious environmental impact, such as fire and transformer oil spill. Therefore, the failures of power transformers are of much concern and are investigated extensively. According to practical historical data, it is clear that a significant percentage of transformer failures is caused by winding problems, such as winding deformations caused by loss of clamping pressure or by the high electrodynamic forces appearing during short circuit, and insulation failures caused by aging or moisture issues. As a result, development of condition monitoring systems for the winding of power transformers holds promise towards cost reduction throughout power transformers' life cycle and towards an increase in the availability and reliability of power transformers. This thesis results from a study on the mechanical and electrical properties of a coupled beams system. Such study is relevant to the understanding of some basic features of power transformers' winding. ... In this thesis, the mechanical and electrical responses of the coupled beams are modelled experimentally and theoretically. The variable parameters of the coupled beams include the gap between the beams, the number of insulation blocks in the gap, and the moisture contents of the insulation blocks.",
    keywords = "Electric power systems, Reliability, Testing, Electric generators, Windings, Electric transformers, Coupled Beams, FRA, Transformer Monitoring",
    author = "Ming Jin",
    year = "2009",
    language = "English",

    }

    TY - THES

    T1 - A study of mechanical and electrical properties of coupled beams for understanding power transformer windings

    AU - Jin, Ming

    PY - 2009

    Y1 - 2009

    N2 - [Truncated abstract] Power transformers are one of the main devices in found power systems. Reliability, power quality and economic cost are affected by the transformer’s health conditions. Catastrophic failures of power transformers may have a serious environmental impact, such as fire and transformer oil spill. Therefore, the failures of power transformers are of much concern and are investigated extensively. According to practical historical data, it is clear that a significant percentage of transformer failures is caused by winding problems, such as winding deformations caused by loss of clamping pressure or by the high electrodynamic forces appearing during short circuit, and insulation failures caused by aging or moisture issues. As a result, development of condition monitoring systems for the winding of power transformers holds promise towards cost reduction throughout power transformers' life cycle and towards an increase in the availability and reliability of power transformers. This thesis results from a study on the mechanical and electrical properties of a coupled beams system. Such study is relevant to the understanding of some basic features of power transformers' winding. ... In this thesis, the mechanical and electrical responses of the coupled beams are modelled experimentally and theoretically. The variable parameters of the coupled beams include the gap between the beams, the number of insulation blocks in the gap, and the moisture contents of the insulation blocks.

    AB - [Truncated abstract] Power transformers are one of the main devices in found power systems. Reliability, power quality and economic cost are affected by the transformer’s health conditions. Catastrophic failures of power transformers may have a serious environmental impact, such as fire and transformer oil spill. Therefore, the failures of power transformers are of much concern and are investigated extensively. According to practical historical data, it is clear that a significant percentage of transformer failures is caused by winding problems, such as winding deformations caused by loss of clamping pressure or by the high electrodynamic forces appearing during short circuit, and insulation failures caused by aging or moisture issues. As a result, development of condition monitoring systems for the winding of power transformers holds promise towards cost reduction throughout power transformers' life cycle and towards an increase in the availability and reliability of power transformers. This thesis results from a study on the mechanical and electrical properties of a coupled beams system. Such study is relevant to the understanding of some basic features of power transformers' winding. ... In this thesis, the mechanical and electrical responses of the coupled beams are modelled experimentally and theoretically. The variable parameters of the coupled beams include the gap between the beams, the number of insulation blocks in the gap, and the moisture contents of the insulation blocks.

    KW - Electric power systems

    KW - Reliability

    KW - Testing

    KW - Electric generators

    KW - Windings

    KW - Electric transformers

    KW - Coupled Beams

    KW - FRA

    KW - Transformer Monitoring

    M3 - Master's Thesis

    ER -