發(fā)布時間：2018-08-03 08:34

【摘要】：220kV高壓輸電線路分布廣泛，是我國高壓線路的主要形式之一，是連接各個變電站、各重要用戶的紐帶，是電力系統(tǒng)的大動脈，承載著居民的用電安全。220kV輸電線路的安全運(yùn)行，不僅直接影響用戶的可靠供電，而且關(guān)系著整個電網(wǎng)的穩(wěn)定性。輸電線路的安全運(yùn)行在電網(wǎng)中具有重要的地位，在國民經(jīng)濟(jì)中占據(jù)舉足輕重的地位。雷擊故障是220kV輸電線的主要故障形式之一，因此本文通過對輸電線路的分析，找出輸電線路雷擊故障特點(diǎn)，并進(jìn)行建模計(jì)算，對雷擊故障情況進(jìn)行全面分析，制定切實(shí)可行的高壓輸電線路的技術(shù)措施，降低輸電線路的雷電繞擊，保證輸電線路雷擊跳閘水平在合理的范圍之內(nèi)，提高了供電可靠性和電網(wǎng)的穩(wěn)定性。通過對220kV輸電線路常見的問題的分析，并對保定地區(qū)220kV高壓輸電線路防雷綜合措施進(jìn)行了研究，結(jié)合2008年～2010年保定地區(qū)雷擊跳閘情況的統(tǒng)計(jì)分析，對典型線路的雷擊故障進(jìn)行了分析，并選擇具體線路對其綜合防雷措施的實(shí)施和效果進(jìn)行闡述，最后對保定地區(qū)綜合防雷措施進(jìn)行了分析。
[Abstract]:220kV high voltage transmission line is widely distributed and is one of the main forms of high voltage transmission line in our country. It is the link connecting each substation and important users, and it is the main artery of power system, which carries the safety of electricity consumption of residents. 220kV transmission line runs safely. Not only directly affects the user's reliable power supply, but also relates to the stability of the whole power grid. The safe operation of transmission lines plays an important role in the power grid and plays an important role in the national economy. Lightning strike fault is one of the main fault forms of 220kV transmission line. Therefore, through the analysis of transmission line, this paper finds out the characteristics of transmission line lightning strike fault, and carries on the modeling calculation, carries on the comprehensive analysis to the lightning strike fault situation. The feasible technical measures for high voltage transmission line are formulated to reduce the lightning wound failure of transmission line and to ensure that the lightning tripping level of transmission line is within a reasonable range. The reliability of power supply and the stability of power network are improved. Based on the analysis of common problems of 220kV transmission line, the comprehensive measures of lightning protection for 220kV high voltage transmission line in Baoding area are studied, combined with the statistical analysis of lightning tripping in Baoding area from 2008 to 2010. The lightning strike faults of typical lines are analyzed, and the implementation and effect of comprehensive lightning protection measures are expounded by selecting specific lines. Finally, the comprehensive lightning protection measures in Baoding area are analyzed.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM862

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本文編號：2161188