本文選題：同塔多回輸電線(xiàn)路 + 感應(yīng)電壓��； 參考：《華南理工大學(xué)》2014年碩士論文

【摘要】：同塔多回輸電技術(shù)不僅可以減少綜合造價(jià)和線(xiàn)路走廊的需求，也提高了單位線(xiàn)路的傳輸容量，同時(shí)也滿(mǎn)足了電力傳輸?shù)男枨�。由于其明顯的經(jīng)濟(jì)效益和社會(huì)效益，同塔多回輸電技術(shù)在國(guó)內(nèi)外廣泛應(yīng)用。但是，在同塔多回輸電線(xiàn)路中，當(dāng)其中一回或幾回停電檢修，而其它回正常運(yùn)行時(shí)，在停電線(xiàn)路上會(huì)產(chǎn)生感應(yīng)電壓和感應(yīng)電流。特別是在電壓等級(jí)很高的同塔多回輸電線(xiàn)路，，感應(yīng)電流和感應(yīng)電壓可能會(huì)很大。因此研究同塔多回輸電線(xiàn)路的感應(yīng)電流和電壓對(duì)于推進(jìn)同塔多回輸電技術(shù)的應(yīng)用以及接地開(kāi)關(guān)的選型有極大的幫助。 本文首先從理論計(jì)算方面簡(jiǎn)單地對(duì)同塔多回輸電線(xiàn)路的感應(yīng)電流和感應(yīng)電壓進(jìn)行了研究分析。然后以瑤崗變電站工程一段220kV同塔多回輸電線(xiàn)路為實(shí)例，在ATP Draw程序中建立了同塔多回輸電線(xiàn)路模型，在各種系統(tǒng)運(yùn)行方式下對(duì)同塔多回輸電線(xiàn)路的感應(yīng)電壓和感應(yīng)電流進(jìn)行了仿真計(jì)算。本文還對(duì)輸電線(xiàn)路長(zhǎng)度、桿塔檔距、運(yùn)行線(xiàn)路輸送功率、土壤電阻率等因素對(duì)同塔多回輸電線(xiàn)路感應(yīng)電壓和感應(yīng)電流的影響進(jìn)行了仿真計(jì)算及分析，從而得出同塔多回輸電線(xiàn)路感應(yīng)電壓和感應(yīng)電流的一般規(guī)律。最后，根據(jù)接地開(kāi)關(guān)的選擇標(biāo)準(zhǔn)，對(duì)該在建變電站的同塔四回輸電線(xiàn)路的接地開(kāi)關(guān)進(jìn)行選擇并提出建議。
[Abstract]:Multi-circuit transmission technology in the same tower can not only reduce the comprehensive cost and the demand of the corridor, but also improve the transmission capacity of unit lines, and meet the demand of power transmission. Due to its obvious economic and social benefits, the multi-circuit transmission technology of the same tower is widely used at home and abroad. However, in the same tower multi-circuit transmission line, when one or several times of outage is overhauled and the other circuit is in normal operation, inductive voltage and inductive current will be generated on the blackout line. The inductive current and inductive voltage can be very large, especially in the high voltage-level multi-circuit transmission lines of the same tower. Therefore, the study of inductive current and voltage of multi-circuit transmission line with the same tower is of great help to the application of the same tower multi-circuit transmission technology and the selection of grounding switch. In this paper, the inductive current and inductive voltage of the multi-circuit transmission line with the same tower are studied and analyzed simply from the aspect of theoretical calculation. Then, taking the 220kV multi-circuit transmission line of the same tower in Yaogang Substation Project as an example, the model of the multi-circuit transmission line of the same tower is established in the ATP draw program. The induction voltage and inductive current of the multi-circuit transmission line with the same tower are simulated under various operation modes of the system. The effects of transmission line length, tower distance, transmission power and soil resistivity on induction voltage and inductive current of multi-circuit transmission lines with the same tower are simulated and analyzed in this paper. The general law of inductive voltage and inductive current of multi-circuit transmission line with the same tower is obtained. Finally, according to the selection criteria of the grounding switch, the grounding switch of the same tower four-circuit transmission line of the substation under construction is selected and some suggestions are put forward.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM751

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10 張嘉e

本文編號(hào)：2015790