某220 kV架空線路地線斷股故障分析

 

趙蓂冠¹，王輝²，董新勝¹，張小軍¹，岳云凱¹，張振浩³，歐洋⁴

（1 國(guó)網(wǎng)新疆電力有限公司電力科學(xué)研究院，新疆 烏魯木齊 830011；2 國(guó)網(wǎng)新疆電力有限公司昌吉供電公司，新疆 昌吉 831100；

3 國(guó)網(wǎng)新疆電力有限公司哈密供電公司，新疆 哈密 839000；4 國(guó)網(wǎng)新疆電力有限公司阿克蘇供電公司，新疆 阿克蘇 843000）

 

    摘 要：微風(fēng)振動(dòng)誘發(fā)的架空線路導(dǎo)地線疲勞斷股等事故嚴(yán)重影響了線路安全。某220 kV架空線路在巡視中發(fā)現(xiàn)多處存在地線斷股的缺陷，通過對(duì)該線路地線斷股缺陷進(jìn)行計(jì)算分析，得出該線路在防振措施及運(yùn)維方面存在的不足，并給出合理的整改及防范措施。提出的針對(duì)架空地線的防振措施普遍適用于架空線路，即在后期維修期間安裝防振錘時(shí)應(yīng)纏繞鋁包帶，在設(shè)計(jì)和建設(shè)階段選擇和使用跟地線力學(xué)特性匹配的并且適合于地形的防振錘很重要，防振錘的安裝位置和數(shù)量應(yīng)合理選擇、規(guī)范安裝。

    關(guān)鍵詞：架空地線；斷股缺陷；防振錘；微風(fēng)振動(dòng)

    中圖分類號(hào)：TM726.3     文獻(xiàn)標(biāo)識(shí)碼：A     文章編號(hào)：1007-3175(2021)03-0041-04

    Abstract: Breeze vibration induced ground conductor of the overhead line fatigue broken strands and other accidents are seriously affect the essential safety of the line. In this paper, through the calculation and analysis of the defects of the ground wire broken strands in a 220 kV overhead line, the shortcomings of the line in earthquake prevention measures and operation and maintenance are obtained. Reasonable rectification and preventive measures are given. The anti-shock measures proposed in this paper are generally suitable for overhead lines, that is, the anti-vibration hammer should be wound with aluminum tape during the later maintenance period. It is very important to select and use the anti-vibration hammer which matches the mechanical characteristics of the ground wire and is suitable for terrain in the design and construction. The installation position and quantity of the anti-vibration hammer should be reasonably selected and standardized.

    Key words: overhead ground wire; fault defect; anti-vibration hammer; breeze vibration