發(fā)布時(shí)間：2018-04-16 00:07

  本文選題：磁暴 + 耦合干擾　； 參考：《高電壓技術(shù)》2016年06期

【摘要】：為研究地磁暴對(duì)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(shí)變磁場(chǎng)與輸電線的耦合模型,以場(chǎng)的方式分析磁暴與輸電線間的耦合干擾關(guān)系;其次,用不同大小的直流電源來等效磁暴對(duì)500 k V輸電系統(tǒng)電磁暫態(tài)的擾動(dòng),以路的方式計(jì)算磁暴對(duì)輸電系統(tǒng)電場(chǎng)暫態(tài)的影響。計(jì)算表明,隨著磁暴擾動(dòng)地磁場(chǎng)的變化,輸電線路中的耦合電流呈現(xiàn)單調(diào)變化趨勢(shì);當(dāng)?shù)卮抛兓蕿?.6 n T/s時(shí),500 k V單回輸電線中最大耦合電流能達(dá)到2.4 A以上。另外,磁暴對(duì)電網(wǎng)的電磁暫態(tài)影響顯著;當(dāng)其在電網(wǎng)中引起的GIC為80 A時(shí),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(yīng)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(xué)輸配電裝備及系統(tǒng)安全與新技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室;國(guó)網(wǎng)四川省電力公司電力科學(xué)研究院;國(guó)網(wǎng)重慶市電力公司南岸供電分公司;
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973計(jì)劃)(2011CB209401) 國(guó)家自然科學(xué)基金(51477013)~~
【分類號(hào)】：TM75

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相關(guān)碩士學(xué)位論文 前2條

1 樊靈強(qiáng);磁暴的等效模型及對(duì)輸電線路干擾研究[D];重慶大學(xué);2015年

2 尚康良;磁暴感應(yīng)的地電流研究與計(jì)算[D];華北電力大學(xué);2012年

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本文編號(hào)：1756407