軟導(dǎo)線引下線風(fēng)偏放電事故分析與改進(jìn)措施
陳清鶴1,2，李超1，陳荔青2
1 國網(wǎng)福州供電公司，福建 福州 350009；2 福州電力設(shè)計院有限公司，福建 福州 350007
摘 要：針對一起由臺風(fēng)引起的軟導(dǎo)線引下線風(fēng)偏放電事故，進(jìn)行大風(fēng)速條件下的風(fēng)偏位移計算，分析了事故成因，并從減小引下線高差角、降低弧垂等方面著手，提出了通過加高支柱絕緣子高度的方式來提高引下線抗風(fēng)能力。計算結(jié)果表明改造后的方案提高了導(dǎo)線風(fēng)偏后的安全裕度。
關(guān)鍵詞：軟導(dǎo)線；風(fēng)偏計算；引下線弧垂
中圖分類號：TM755 文獻(xiàn)標(biāo)識碼：B 文章編號：1007-3175(2014)08-0046-04
Evaluation and Improvement Method for Discharge Accident of Flexible Conductor Down Lead Caused by Windage Yaw
CHEN Qing-he1, 2, LI Chao1, CHEN Li-qing2
1 Fuzhou Electric Power Supply Company of State Grid, Fuzhou 350009, China;
2 Fuzhou Electric Power Design Institute Co., Ltd, Fuzhou 350007, China
Abstract: In allusion of one discharge accident of flexible conductor down lead caused by typhoon, this paper calculated the windage yaw displacement in strong wind condition and analyzed the accident causes. Starting from reducing the down lead height difference angle, the sag and so on, this paper prosposed to increase the height of post insulator to improve the down lead anti-wind ability. The calculation results show that the improved plan raised the safety margin of the flexible conductor caused by windage yaw.
Key words: flexible conductor; windage yaw calculation; down lead sag
參考文獻(xiàn)
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