摘要
5.12汶川大地震等国内外的震害经验表明：变压器及套管在强震作用下的抗震能力比较薄弱。目前，利用振动台模拟地震试验是研究变压器及套管抗震性能最准确、最先进的手段。本文首先根据中国现有变压器的结构特点，设计了一台变压器试验模型， 其中220kV、500kV套管为国内生产的真型套管，同工程实际一样安装在变压器模型上。首先，提出了三等级变压器抗震能力考核水平的新概念；其次，在白噪声激励下的完成了变压器及套管的动力特性测试；最后，输入X、Y单向实震记录、人工波、共振拍波等地震波,开展变压器及套管的在普通和中等抗震能力水平下的振动台模拟地震试验，得到了试验对象关键部位的加速度、位移及应变等地震响应时程曲线。通过上述研究，进一步掌握了变压器及套管体系的地震响应规律和抗震薄弱环节。试验研究对今后变压器及套管的抗震设计或修正相关规程、规范具有重要的参考意义。
Abstract
Earthquake damage experience at home and abroad shows that seismic performance of power transformer and the bushings is weak subjected to intensity earthquake as 5.12 Wenchuan great earthquake. At present, study on seismic performance of transformer and bushing by using shaking table test simulated earthquake is the most accurate and most advanced means. Consulting Chinese current transformer structure characteristic, one transformer experiment model are design. Actual porcelain bushing of 220 kV and 500 kV was mounted on the experiment model. Firstly, One new three grade guidelines about transformer seismic fortification are put forward. Secondly, dynamic characteristic on transformer and the bushing are tested by inputting white noise. Lastly, shaking table test simulated earthquake are developed by x-dir. or x-direction inputting actual seismographic record, artificial waves and resonant beat-wave seismic waves, etc. Seismic response time history curve and data of the key position for acceleration, displacement and strain were acquired. The seismic response regularity and characteristic are further found by analyzing a great deal of datum on seismic response of transformer and bushings. Certainly, The above testing and researchhave a great reference significance for the amendment of related seismic norms and improving and enhancing the seismic capacity and design of transformer-bushing system.
关键词
电力变压器 /
瓷套管 /
地震灾害 /
振动台试验 /
地震响应 /
抗震能力考核
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Key words
power transformer /
porcelain bushing /
earthquake disaster /
shaking table test /
earthquake response /
seismic capacity assessment
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曹枚根;;周福霖;谭平;范荣全;卢智成;张雪松.
大型电力变压器及套管振动台抗震试验研究[J]. 振动与冲击, 2011, 30(11): 122-129
Cao Mei-gen;Zhou Fu-lin;Tan Ping;Fan Rong-quan;Lu Zhi-cheng;Zhang Xue-song.
Study of shaking table test on seismic performance of large power transformer and the bushings [J]. Journal of Vibration and Shock, 2011, 30(11): 122-129
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