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水分对套管绝缘特性的影响及其机理

摘要第5-6页
Abstract第6页
Chapter 1 General introduction第10-35页
    1.1 Research background and significance on power transformer bushing insulation第10-11页
    1.2 Current research status of oil impregnated busing insulation第11-31页
        1.2.1 Bushing design theory第12-15页
        1.2.2 Moisture ingress and bushing failure mechanisms第15-19页
            1.2.2.1 Moisture ingress第15-18页
            1.2.2.2 Bushing failure mechanisms第18-19页
        1.2.3 Moisture influence in oil-paper systems第19-24页
            1.2.3.1 Moisture in oil第19-23页
            1.2.3.2 Moisture in Paper第23-24页
        1.2.4 Insulation Diagnostic methods第24-27页
        1.2.5 Partial discharge theory第27-31页
            1.2.5.1 External partial discharge第27-28页
            1.2.5.2 Internal partial discharge第28页
            1.2.5.3 Different terms used in partial discharge第28-29页
            1.2.5.4 Moisture and PD Process within model第29-31页
            1.2.5.5 Phase of PD development第31页
    1.3 Aim第31-32页
    1.4 Methods第32页
    1.5 Research objectives and scope第32-33页
        1.5.1 Objectives第32-33页
        1.5.2 Scope第33页
    1.6 Thesis outlines第33-35页
Chapter 2 Test device and research methodology第35-44页
    2.1 Introduction第35页
    2.2 Test platform第35-39页
        2.2.1 Power supply第35-36页
        2.2.2 Detection device第36-38页
        2.2.3 Calibration第38-39页
    2.3 Specimen preparation and experiment Tools第39-41页
        2.3.1 Specimen preparation第39-40页
        2.3.2 Experiment tools第40-41页
    2.4 Test method第41-42页
        2.4.1 Partial discharge signal analysis method第41页
        2.4.2 The process of experiment第41-42页
    2.5 The problem of noise第42-43页
    2.6 The summary of this chapter第43-44页
Chapter 3 Moisture ingress process and PD phenomenon to bushing第44-49页
    3.1 Introduction第44页
    3.2 Moisture ingress第44-45页
    3.3 Moisture characteristic on upper and lower parts of bushing model第45-46页
    3.4 Influence of moisture on foil edge of oil impregnated bushing第46-47页
        3.4.1 with constant voltage applied第46页
        3.4.2 With electrical stress applied in steps第46-47页
    3.5 Moisture location position effect and its impact on PD第47-48页
    3.6 PD process and phenomenon poor-dry defect for bushing model第48页
    3.7 The summary of this chapter第48-49页
Chapter 4 Analysis of moisture effect in bushing第49-70页
    4.1 Ingress using humidifier test results第49-50页
    4.2 At different parts of bushing model moisture effect test result第50-52页
    4.3 At constant voltage applied test result第52-54页
    4.4 At electrical stress applied in steps test result第54-59页
    4.5 Effect of moisture summary第59页
    4.6 Paper moisture with injecting point第59-60页
    4.7 Moisture location position effect and its impact on PD test results第60-70页
        4.7.1 Horizontal (radial) water inject PD Development with voltage steps第61-62页
        4.7.2 Vertical (axial) water inject on paper PD Development第62-63页
        4.7.3 Horizontal and vertical PD Shape comparison第63-65页
        4.7.4 Capacitance and dissipation factor characterizing insulation systems with moisture第65-70页
Chapter 5 Conclusion第70-72页
Reference第72-77页
ACKNOWLEDGEMENTS第77页

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