本文關(guān)鍵詞： 狀態(tài)評(píng)估 狀態(tài)檢修 可靠性 FTA　出處：《華北電力大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：近年來(lái),隨著電網(wǎng)規(guī)模的逐漸擴(kuò)大,電力網(wǎng)及其線路結(jié)構(gòu)也越來(lái)越復(fù)雜,國(guó)內(nèi)外的一些大面積連鎖停電事故頻繁發(fā)生,事故造成的后果日益嚴(yán)重,對(duì)國(guó)家經(jīng)濟(jì)發(fā)展、人民生活和國(guó)家安全造成了巨大的影響,這使得電力系統(tǒng)的安全可靠運(yùn)行問題變得越來(lái)越突出。如何評(píng)估電網(wǎng)在運(yùn)行過程中特別是在故障狀態(tài)和特殊運(yùn)行方式下的可靠性水平成為世界各國(guó)電力系統(tǒng)面臨的緊迫問題。 本文研究了架空線狀態(tài)評(píng)估與狀態(tài)檢修的發(fā)展過程,分析了影響架空線運(yùn)行可靠性的各種部件缺陷及成因,確定了架空線狀態(tài)評(píng)估與狀態(tài)檢修的主要狀態(tài)信息,分析了架空線路狀態(tài)評(píng)估與狀態(tài)檢修的各種評(píng)估方法,并利用FTA故障樹評(píng)判方法,建立了架空線路狀態(tài)評(píng)估的數(shù)學(xué)模型。研究了架空線路狀態(tài)評(píng)估與狀態(tài)檢修的評(píng)估標(biāo)準(zhǔn),建立了架空線路狀態(tài)評(píng)估與狀態(tài)檢修的各級(jí)事件,并提出了相應(yīng)的權(quán)系數(shù)計(jì)算方法。 最后本文應(yīng)用VB程序?qū)ι鲜龇椒ㄟM(jìn)行了評(píng)估系統(tǒng)軟件設(shè)計(jì),并結(jié)合現(xiàn)場(chǎng)收集整理的缺陷和故障數(shù)據(jù),將該軟件應(yīng)用于太原220kV趙匡線,對(duì)評(píng)估結(jié)果與實(shí)際運(yùn)行的可靠性水平進(jìn)行了比較分析,驗(yàn)證了所提方法的有效性。結(jié)果表明該數(shù)學(xué)模型簡(jiǎn)捷有效,可以得出架空輸電線路不同運(yùn)行狀態(tài)的各級(jí)可靠性指標(biāo)和相應(yīng)的薄弱環(huán)節(jié),對(duì)于指導(dǎo)架空輸電線路的運(yùn)行檢修有一定的實(shí)用價(jià)值。
[Abstract]:In recent years, with the gradual expansion of the scale of the power network, the power network and its line structure is becoming more and more complex, a number of large-scale cascading blackouts occur frequently at home and abroad, the consequences of the accidents are becoming increasingly serious. It has great influence on national economic development, people's life and national security. This makes the problem of safe and reliable operation of power system more and more prominent. How to evaluate the reliability level of power network during operation, especially under the condition of fault state and special operation mode, becomes the face of power system all over the world. The pressing problem of. In this paper, the development process of condition assessment and condition maintenance of overhead lines is studied, and the defects and causes of various components affecting the reliability of overhead lines are analyzed. The main status information of overhead line condition assessment and condition maintenance is determined, and various evaluation methods of overhead line condition assessment and condition maintenance are analyzed, and the FTA fault tree evaluation method is used. The mathematical model of overhead line condition assessment is established, the evaluation standard of overhead line condition assessment and condition maintenance is studied, and the events of overhead line condition evaluation and condition maintenance are established. The calculation method of weight coefficient is put forward. Finally, the software of the evaluation system is designed by VB program, and the software is applied to the 220 kV Zhaoguang line of Taiyuan, combined with the defect and fault data collected and arranged on the spot. The effectiveness of the proposed method is verified by comparing the evaluation results with the reliability level of the actual operation, and the results show that the mathematical model is simple and effective. The reliability indexes and the corresponding weak links of overhead transmission lines in different operation states can be obtained, which has certain practical value for guiding the operation and maintenance of overhead transmission lines.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM755

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本文編號(hào)：1466509