高壓交流輸電線路會(huì)對(duì)同走廊的地下天然氣/石油金屬管道感應(yīng)產(chǎn)生很大電壓,尤其是在輸電線路發(fā)生故障時(shí)產(chǎn)生的影響更加嚴(yán)重。高壓交流輸電線路在天然氣/石油地下金屬管道上產(chǎn)生的電磁場(chǎng)會(huì)產(chǎn)生有害電壓,對(duì)人員、管道及其相關(guān)保護(hù)設(shè)備（如陰極系統(tǒng)）造成威脅。如果感應(yīng)電壓不符合標(biāo)準(zhǔn),則必須采取抑制措施,將這些感應(yīng)電壓降至對(duì)人員和管道安全的水平。本文研究了 500kV交流輸電線路的電磁場(chǎng)效應(yīng)。針對(duì)交流輸電線路穩(wěn)態(tài)運(yùn)行和接地故障故障兩種不同工況下產(chǎn)生的電磁干擾,使用CDEGS軟件進(jìn)行了全面的分析。對(duì)于穩(wěn)態(tài)運(yùn)行的工況,計(jì)算獲得的大部分結(jié)果與GB 6830-1986標(biāo)準(zhǔn)保持一致。但是,由于交流輸電線路單相接地短路產(chǎn)生的高電流,使得地下管道及其鄰近土壤發(fā)生電位抬升,感應(yīng)電壓超出ITU-TDL/T 5033-2006中規(guī)定的標(biāo)準(zhǔn)限值。為了解決這個(gè)問(wèn)題,分析了兩種不同類型的抑制措施（梯度控制線和接地電極）。通過(guò)仿真,發(fā)現(xiàn)所提出的抑制措施在不同水平的單相接地故障條件下都能大大降低兩種情況下的感應(yīng)電壓。然而,梯度控制線技術(shù)能夠?qū)⒏袘?yīng)電壓降低到比采用接地電極措施時(shí)更低的水平,因此建議采用前一種抑制措施,以將管道涂層感應(yīng)電壓降... 

【文章頁(yè)數(shù)】：67 頁(yè)

【學(xué)位級(jí)別】：碩士

【文章目錄】：
摘要
Abstract
CHAPTER 1: General Introduction
    1.1 Background
    1.2 Research Status of Domestic and Overseas
    1.3 Layout of the thesis
CHAPTER 2: Literature Review
    2.1 Electromagnetic Interference Mechanism (Modes)
        2.1.1 Inductive (Electromagnetic) Interference
        2.1.2 Resistive (Conductive) Interference
        2.1.3 Electrostatic (Capacitive) Interference
    2.2 Electromagnetic Interference Limits
        2.2.1 Personal Safety Voltage
        2.2.2 Pipeline Safety
        2.2.3 AC Corrosion (Leakage Current)
    2.3 Electromagnetic Interference Mitigation
        2.3.1 Insulating Joints
        2.3.2 Lumped Grounding
        2.3.3 Cancellation Wires
        2.3.4 Gradient Control Wire
    2.4 EMI Calculation Method and CDEGS Software
        2.4.1 Calculation of induced voltage using Telegraph and Carson's Equations
        2.4.2 CDEGS software
    2.5 Summary of the chapter
CHAPTER 3: EMI Analysis under Normal Condition
    3.1 Description of the Case Study
    3.2 Case Study Simulation and Results Interpretation
    3.3 Application of Mitigation Systems
    3.4 Summary of this Chapter
Chapter 4: EMI Analysis under Single Phase to Ground Fault
    4.1 Introduction
    4.2 Simulation Results and Discussion
    4.3 Application of Mitigation Systems
    4.4 Summary of this Chapter
Chapter 5: Project Application
    5.1 Method of analysis of cases containing oblique proximity
    5.2 Description of the model Case Study
        5.2.1 Analysis under Normal Condition
        5.2.2 Analysis under Single Phase to Ground fault Condition
        5.2.3 Application of Mitigation Systems
    5.3 Summary of this Chapter
Chapter 6: Conclusion and Future Research
Reference
Publications
Acknowledgement


【參考文獻(xiàn)】：
期刊論文
[1]特高壓交流輸電線路正常運(yùn)行時(shí)對(duì)輸油輸氣管道的感性耦合計(jì)算模型[J]. 齊磊,崔翔,郭劍,曹玉杰.  中國(guó)電機(jī)工程學(xué)報(bào). 2010(21)
[2]交流輸電線路對(duì)輸油輸氣管道電磁影響的限值[J]. 郭劍,曹玉杰,胡士信,陸家榆.  電網(wǎng)技術(shù). 2008(02)



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