本文選題：輸電線路 + 特高壓��； 參考：《鄭州大學(xué)》2015年碩士論文

【摘要】：由于受全球氣候變化的影響,近些年來我國頻繁出現(xiàn)極端惡劣天氣,輸電線路多次出現(xiàn)覆冰故障,更嚴重的是,在2008年2月,在中國南方大部分地區(qū)出現(xiàn)了大范圍的嚴重的冰雪狀況,造成電網(wǎng)重大災(zāi)難,給受災(zāi)地區(qū)的交通、電力、通信和人民生活帶來嚴重影響。因此,對輸電線路的覆冰原理和防覆冰技術(shù)的研究迫在眉睫。隨著,國家特高壓電網(wǎng)建設(shè)的加快發(fā)展,特高壓電網(wǎng)的安全穩(wěn)定運行是今后骨干電網(wǎng)的重中之重。本文從國家首條1000千伏特高壓交流試驗示范工程線路所發(fā)生的覆冰故障為出發(fā)點,分析了故障發(fā)生的原因,研究了國內(nèi)外的覆冰理論,總結(jié)了各種防覆冰措施,為今后的特高壓輸電線路防覆冰治理工作提供了參考。本文所完成的主要工作包括一下四個方面：(1)輸電線路覆冰基礎(chǔ)理論研究。詳細介紹了輸電線路覆冰類型,覆冰機理和影響覆冰的各種因素,為解決防覆冰措施提供理論基礎(chǔ)。(2)通過對特高壓線路的覆冰故障案例研究。分析覆冰閃絡(luò)故障發(fā)生的原因,找出線路覆冰的規(guī)律性。(3)分析研究絕緣子覆冰閃絡(luò)的特性,找出解決防覆冰治理方案。(4)輸電線路防覆冰技術(shù)的研究。結(jié)合河南電網(wǎng)所采用的防覆冰措施,針對特高壓輸電線路絕緣子特點,提出有針對性防覆冰治理措施。
[Abstract]:Due to the impact of global climate change, in recent years, China has frequently experienced extremely bad weather, and the transmission lines have suffered many ice-coated failures. What is more, in February 2008, In most parts of southern China, severe snow and ice conditions have occurred on a large scale, resulting in a major disaster in the power grid and a serious impact on transportation, electricity, communications and the lives of the people in the affected areas. Therefore, it is urgent to study the ice-coated principle and anti-icing technology of transmission lines. With the rapid development of national UHV power grid construction, the safe and stable operation of UHV power grid is the most important in the future backbone grid. Starting from the icing failure of the first 1000 kV UHV AC test demonstration project in China, this paper analyzes the causes of the failure, studies the icing theory at home and abroad, and summarizes various anti-icing measures. It provides a reference for anti-icing treatment of UHV transmission lines in the future. The main work of this paper includes four aspects: 1) basic theory research on icing of transmission lines. This paper introduces in detail the types of icing, the mechanism of icing and the factors affecting the icing of transmission lines, which provides a theoretical basis for solving the icing prevention measures. (2) A case study on icing faults of UHV lines is carried out. The cause of icing flashover fault is analyzed, the regularity of line icing is found out, the characteristics of insulator icing flashover is analyzed and the anti-icing treatment scheme is found out. In view of the insulator characteristics of UHV transmission line, the anti-icing measures are put forward according to the anti-icing measures adopted in Henan power grid.
【學(xué)位授予單位】：鄭州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM752
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本文編號：1886086