本文選題：特高壓 + 單相接地故障過(guò)電壓　； 參考：《華北電力大學(xué)(北京)》2017年碩士論文

【摘要】：我國(guó)第一條特高壓交流輸電線(xiàn)路在2009年投入運(yùn)行,雖然在這幾年在特高壓交流輸電方面積累了很多經(jīng)驗(yàn),然而對(duì)于特高壓系統(tǒng)的認(rèn)識(shí)仍然有很多的不足,尤其是因?yàn)樘馗邏航涣鬏旊娋�(xiàn)路故障過(guò)電壓?jiǎn)栴}比超高壓系統(tǒng)更為嚴(yán)重,所以此論文將主要研究特高壓交流系統(tǒng)單相接地故障過(guò)電壓和快速暫態(tài)過(guò)電壓的相關(guān)問(wèn)題。論文主要工作及成果包括三個(gè)方面:一是計(jì)算得出特高壓交流長(zhǎng)線(xiàn)路單相接地故障過(guò)電壓,利用某軟件仿真系統(tǒng),對(duì)單相接地故障過(guò)電壓進(jìn)行模擬計(jì)算,綜合各種影響因素后,求出特高壓線(xiàn)路單相接地故障過(guò)電壓的最大值。二是在求取其最大值后,深入探討相應(yīng)過(guò)電壓限制方法。研究發(fā)現(xiàn),采用避雷器(metal oxide arrester簡(jiǎn)稱(chēng)MOA)和高抗聯(lián)合作用是一種有效的方法,論文詳細(xì)研究了線(xiàn)路合理的分段方式,從而得出不同的限制水平和線(xiàn)路所能達(dá)到的最大長(zhǎng)度和合理的分段方式,并為實(shí)際運(yùn)行提供有效的參考。三是重點(diǎn)研究對(duì)入侵特高壓變壓器的快速暫態(tài)過(guò)電壓(Very Fast Transient Over-voltage簡(jiǎn)稱(chēng)VFTO)波前陡度的限制措施,以對(duì)主變縱絕緣進(jìn)行保護(hù)為出發(fā)點(diǎn),制定套管與架空線(xiàn)長(zhǎng)度、波前陡度之間的相關(guān)參數(shù),提出了如何才能確保過(guò)電壓的安全距離。最后一部分針對(duì)特高壓氣體絕緣金屬封閉開(kāi)關(guān)設(shè)備(Gas Insulated Switchgear簡(jiǎn)稱(chēng)GIS)變電站與開(kāi)關(guān)場(chǎng)部分存在的部分差異,對(duì)兩者的區(qū)別進(jìn)行探討,并對(duì)兩者的GIS的主絕緣、主變的主絕緣和縱絕緣以上三方面進(jìn)行分析研究,最后提出一些實(shí)用性較強(qiáng)的建議。
[Abstract]:The first UHV AC transmission line in China was put into operation in 2009. Although a lot of experience has been accumulated in UHV AC transmission in recent years, there are still many deficiencies in the understanding of UHV system. Especially because the problem of fault overvoltage in UHV AC transmission line is more serious than that in UHV system, this paper will mainly study the overvoltage and fast transient overvoltage in UHV AC system. The main work and achievements of this paper include three aspects: first, the over-voltage of single-phase grounding fault of UHV AC long line is calculated. By using a software simulation system, the over-voltage of single-phase grounding fault is simulated and calculated. The maximum overvoltage of single-phase grounding fault in UHV transmission line is obtained. Second, after the maximum value is obtained, the corresponding overvoltage limiting method is discussed in depth. It is found that the combination of metal oxide arrester (MOA) and high resistance is an effective method. The maximum length and reasonable segmenting mode of different limiting levels and circuits are obtained, and effective reference is provided for practical operation. The third is to focus on the limitation measures for the fast transient overvoltage of intrusive UHV transformers, very Fast Transient Over-voltage (VFTO) wavefront steepness, in order to protect the longitudinal insulation of the main transformer, the length of bushing and overhead line is determined. The relative parameters between wavefront steepness are proposed to ensure the safe distance of overvoltage. The last part discusses the difference between the gas Insulated Switchgear substation and the switch field, and discusses the main insulation of the two GIS. The main insulation and longitudinal insulation of main transformer are analyzed and studied. Finally, some practical suggestions are put forward.
【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TM86

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 鄭相華;劉淑君;段宗周;彭哲;;火力發(fā)電廠1000kV特高壓送出電氣主接線(xiàn)方案研究[J];電氣應(yīng)用;2013年01期

2 岳功昌;劉衛(wèi)東;陳維江;關(guān)永剛;李志兵;王浩;;氣體絕緣開(kāi)關(guān)設(shè)備中特快速瞬態(tài)過(guò)電壓的全過(guò)程測(cè)量方法[J];中國(guó)電機(jī)工程學(xué)報(bào);2011年31期

3 陳維江;李志兵;孫崗;戴敏;劉衛(wèi)東;李成榕;王磊;王浩;陳國(guó)強(qiáng);姚濤;王森;盧江平;吳軍輝;張希捷;李文藝;李心一;;特高壓氣體絕緣開(kāi)關(guān)設(shè)備中特快速瞬態(tài)過(guò)電壓特性的試驗(yàn)研究[J];中國(guó)電機(jī)工程學(xué)報(bào);2011年31期

4 陳維江;顏湘蓮;王紹武;王承玉;李志兵;戴敏;李成榕;劉衛(wèi)東;陳海波;張喬根;魏光林;張猛;;氣體絕緣開(kāi)關(guān)設(shè)備中特快速瞬態(tài)過(guò)電壓研究的新進(jìn)展[J];中國(guó)電機(jī)工程學(xué)報(bào);2011年31期

5 易強(qiáng);周浩;計(jì)榮榮;徐瓊t，

本文編號(hào)：1811259