應(yīng)用于高海拔環(huán)境下的550 kV GIS套管抗震性能分析
劉偉, 劉傳會,劉秀君
(山東彼岸電力科技有限公司,山東 濟(jì)南 250200)
摘 要:對設(shè)計并應(yīng)用于云南某高海拔地區(qū)的 550 kV GIS 套管進(jìn)行抗震性能分析,參照設(shè)計圖紙構(gòu)建三維模型,利用模態(tài)分析確定套管設(shè)計結(jié)構(gòu)的固有頻率和振型,對套管施加內(nèi)部壓力、風(fēng)載荷及靜態(tài)端子負(fù)荷,采用響應(yīng)譜分析計算出套管在 AG5 水平下各零部件的位移與應(yīng)力。計算結(jié)果表明,所設(shè)計的 550 kV GIS 套管安全系數(shù)滿足 AG5 水平要求,可以安全使用,但套管頂部均壓環(huán)位移相對較大,應(yīng)充分考慮預(yù)留頂端導(dǎo)線接線長度。
關(guān)鍵詞:高海拔;GIS 套管;抗震性能分析;模態(tài);響應(yīng)譜
中圖分類號:TM643 文獻(xiàn)標(biāo)識碼:A 文章編號:1007-3175(2021)11-0039-04
Seismic Performance Analysis of 550 kV GIS Casing at High Altitude
LIU Wei, LIU Chuan-hui, LIU Xiu-jun
(Shandong Peiport Electric Power Technology Co., Ltd, Jinan 250200, China)
Abstract: This article evaluated the structural seismic performance of 550 kV GIS casing, which was designed and applied in a high altitude area in Yunnan province. This research constructed a three-dimensional model. It determined the natural frequency and vibration mode of the casing design structure by analyzing this model. The internal pressure, wind load, and static terminal load have been applied to the casing.This paper calculated the displacement and stress of each part of the casing under the AG5 level by using the response spectrum analysis.The calculation results show that the safety factor of 550 kV GIS casing meets the requirements of the AG5 level. However, the displacement of the grading ring at the top of the casing is relatively large, so it is necessary to consider the wire connection length at the top.
Key words: high altitude; GIS casing; seismic performance analysis; model; response spectrum
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