本文選題：磁暴 + 耦合干擾��； 參考：《高電壓技術》2016年06期

【摘要】：為研究地磁暴對高壓輸電線的耦合干擾及電力系統(tǒng)電磁暫態(tài)的影響,首先建立了空間時變磁場與輸電線的耦合模型,以場的方式分析磁暴與輸電線間的耦合干擾關系;其次,用不同大小的直流電源來等效磁暴對500 k V輸電系統(tǒng)電磁暫態(tài)的擾動,以路的方式計算磁暴對輸電系統(tǒng)電場暫態(tài)的影響。計算表明,隨著磁暴擾動地磁場的變化,輸電線路中的耦合電流呈現(xiàn)單調變化趨勢;當?shù)卮抛兓蕿?.6 n T/s時,500 k V單回輸電線中最大耦合電流能達到2.4 A以上。另外,磁暴對電網(wǎng)的電磁暫態(tài)影響顯著;當其在電網(wǎng)中引起的GIC為80 A時,三相分閘過電壓增幅10%,潛供電流初始值的中心線偏移最大50 A,應引起足夠重視。
[Abstract]:In order to study the influence of geomagnetic storm on the coupling interference of high voltage transmission line and the electromagnetic transient of power system, a coupling model of space time-varying magnetic field and transmission line is established, and the coupling interference relationship between magnetic storm and transmission line is analyzed by field.The electromagnetic transient disturbance of 500kV transmission system is equivalent to the magnetic storm with different sizes of DC power supply, and the influence of magnetic storm on the electric field transient of transmission system is calculated by the way of circuit.The calculation results show that the coupling current in transmission lines shows a monotone variation trend with the geomagnetic field disturbed by the magnetic storm, and the maximum coupling current in 500 kV single circuit transmission lines is over 2.4 A when the local magnetic change rate is 1.6 n T / s.In addition, the magnetic storm has a significant effect on the electromagnetic transient of the power network, and when the GIC caused by the storm is 80A, the increase of the three-phase switching overvoltage is 10, and the maximum shift of the center line of the initial value of the potential supply current is 50A, which should be paid enough attention to.
【作者單位】： 重慶大學輸配電裝備及系統(tǒng)安全與新技術國家重點實驗室;國網(wǎng)四川省電力公司電力科學研究院;國網(wǎng)重慶市電力公司南岸供電分公司;
【基金】：國家重點基礎研究發(fā)展計劃(973計劃)(2011CB209401) 國家自然科學基金(51477013)~~
【分類號】：TM75

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相關碩士學位論文 前2條

1 樊靈強;磁暴的等效模型及對輸電線路干擾研究[D];重慶大學;2015年

2 尚康良;磁暴感應的地電流研究與計算[D];華北電力大學;2012年

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本文編號：1756407