Abstract:Isolation design is an effective means to reduce the seismic vulnerability of post equipment. In this paper, a simplified theoretical model for seismic isolation of post equipment based on distributed parameter system is established, and the effectiveness is verified by shaking table test of seismic simulation. The seismic isolation design parameters of post equipment with different voltage grades are analyzed and the general design methods are concluded. The following results are summarized: under different rotational stiffness of isolation, the stress response of ultra-high voltage (UHV) post equipment decreases with the increase of damping coefficient, and eventually tends to be stable; under the different damping coefficients of the isolation, the stress response of the extra-high voltage (EHV) and its below voltage grade post equipment approximately shows an approximate linear increase trend with the increase of the rotational stiffness, and the slope of the curve decreases with the increase of the damping. In addition, the equivalent stiffness of the hysteretic curve of isolation will be reduced by increasing damping coefficient. The seismic isolation design method of post equipment should adopt different design processes according to voltage grades; the rotational stiffness of the isolation should be changed first for the extra-high voltage (EHV) and its below voltage grade post equipment, however, the design idea of UHV equipment is the suitable damping parameter should be arranged firstly. The simplified model based on distributed parameter system can provide guidance for rapid analysis of seismic response and isolation design of post equipment.
石高扬 谢强 刘匀 赖炜煌. 变电站支柱类设备减隔震设计方法[J]. 振动与冲击, 2023, 42(24): 109-116.
SHI Gaoyang,XIE Qiang,LIU Yun,LAI Weihuang. A design method on seismic isolation and reduction of post equipment in substation. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(24): 109-116.
[1] XIE Q, ZHU R Y. Damage to electric power grid infrastructure caused by natural disasters in China[J]. IEEE Power and Energy Magazine, 2011, 9(2): 28-36.
[2] ASCE-TCLEE. Northridge earthquake lifeline performance and post-earthquake response[R]. American Society of Civil Engineering Technical Council on Lifeline Earthquake Engineering, 1997.
[3] GOODNO B J, GOULD N C, CALDWELL P, et al. Effects of the January 2010 Haitian earthquake on selected electrical equipment[J]. Earthquake Spectra, 2011, 27(S1): S251-276.
[4] 石高扬, 唐程, 等. 特高压GIS复合套管地震模拟振动台试验研究[J]. 电瓷避雷器, 2021, 02: 116-122.
SHI Gao-yang, TANG Cheng, et al. Seismic simulation shaking table test of UHV GIS composite bushing[J]. Insulators and Surge Arresters, 2021,02: 116-122.
[5] 李晓璇,谢强.±800 kV换流变压器地震易损性分析[J].振动与冲击,2022,41(15):244-251.
LI Xiao-xuan, XIE Qiang. Seismic vulnerability analysis of ±800 kV converter transformer[J], Journal of Vibration and Shock, 2022,41(15):244-251.
[6] 曹枚根,周福霖,谭平.变压器及套管隔震体系振动台试验及地震响应分析[J].振动与冲击,2012,31(21):22-29.
CAO Mei-gen,ZHOU Fu-lin, TAN Ping. Shaking Table Test and Theoretic Analysis on Seismic Performance of Transformer Isolation System with bushings[J], Journal of Vibration and Shock, 2012,31(21):22-29.
[7] 姜斌, 郝群岩, 等. 变电站设备-支架耦合体系的地震响应建模与参数分析[J]. 中国电机工程学报, 2019, 39(8): 2506-2514.
JIANG Bin, HAO Qun-yan, et al. Theoretical modelling and parameter analysis on seismic responses of electrical equipment-support structural system[J]. Proceedings of CSEE, 2019, 39(8): 2506-2514.
[8] 程永锋, 朱全军, 卢智成. 变电站电力设施抗震措施研究现状与发展趋势[J]. 电网技术, 2008, 32(22):84-89.
CHENG Yong-feng, ZHU Quan-jun, LU Zhi-cheng. Progress and development trend on seismic measures of electric power equipment in transformer substation[J]. Power System Technology, 2008, 32(22):84-89.
[9] 林森,程永锋,孟宪政等.1000 kV电容式电压互感器抗震性能优化研究[J].振动与冲击,2019,38(24):91-100.
LIN Sen, CHENG Yong-feng, et al. A study on the seismic performance optimization of a 1 000 kV capacitor voltage transformer[J], Journal of Vibration and Shock, 2019,38(24):91-100.
[10] 文波, 牛荻涛, 等. 隔震技术在高压电力设施中的应用[J]. 工业建筑, 2009, 39(11): 36-41.
WEN Bo, NIU Di-tao, et al. Application of isolation technology in high-voltage electrical equipment[J]. Industrial Construction, 2009, 39(11): 36-41.
[11] 马国梁, 谢强. 大型变压器的基础隔震摩擦摆系统理论研究[J]. 中国电机工程学报, 2017, 37(3): 946-955.
MA Guo-liang, XIE Qiang. Theoretical seismic studies on large-scale transformers base isolated with friction pendulum system [J]. Proceedings of CSEE, 2017, 37(3): 946-955.
[12] ALESSANDRI S, GIANNINI R, et al. Seismic retrofitting of an HV circuit breaker using base isolation with wire ropes. Part 1: preliminary tests and analyses[J]. Engineering Structures, 2015, 98: 251–262.
[13] XIE Q,YANG Z Y, et al. Seismic performance improvement of a slender composite ultra-high voltage bypass switch using assembled base isolation[J]. Engineering Structures, 2019, 194: 320-333.
[14] 周福霖. 工程结构减震控制[M]. 地震出版社, 北京, 1997.
ZHOU Fu-ling. Vibration control of engineering structure [M]. Earthquake Press, Beijing, 1997.
[15] ERSOY S, SAADEGHVAZIRI M A, et al. Analytical and experimental seismic studies of transformers isolated with friction pendulum system and design aspects[J]. Earthquake Spectra, 2001, 17(4):569-595.
[16] XIE Q, YANG Z Y, et al. Isolation design for slender ultra-high voltage composite equipment using modal parameters considering multiple responses[J].Engineering Structures, 2019, 200: 1-14.
[17] BAO Y, TRACY B. Inelastic response of base-isolated structures subjected to impact[J]. Engineering Structures, 2018, 171: 86–93.
[18] CLOUGH, R W, PENZIEN J. Dynamics of structures[M], McGraw-Hill Publishing Company, New York, 1993.
[19] 孙宇晗, 卢智成, 等. 1100kV 特高压套管地震模拟振动台试验[J]. 高电压技术, 2017, 43(12): 4139-4144.
SUN Yu-han, LU Zhi-cheng, et al.Earthquake simulation shaking table test for 1100kV UHV bushing[J]. High Voltage Engineering,2017,43(12):4139-4144.
[20] 李圣, 卢智成, 等.加装金属减震装置的1000kV避雷器振动台试验研究[J].高电压技术, 2015, 41 (5) :1740-1745.
LI Sheng, LU Zhi-cheng, et al. Study on shaking table test of 1 000 k V surge arrester with metal damper device[J]. High Voltage Engineering, 2015, 41(5): 1740-1745.
[21] 刘振林, 代泽兵, 卢智成. 基于 Weibull 分布的电瓷型电气设备地震易损性分析[J].电网技术, 2014 , 38(4):1076-1081.
LIU Zhen-lin, DAI Ze-bing, LU Zhi-cheng. Weibull distribution based seismic vulnerability analysis of porcelain power equipment[J]. Power System Technology, 2014, 38(4): 1076-1081.
[22] 张雪松, 代泽兵, 等.安装新型铅减震器的500 k V氧化锌避雷器动力特性[J].重庆大学学报, 2013, 36 (7) :66-73.
ZHANG Xue-song, DAI Ze-bing, et al.Dynamic behavior of 500 k V metal oxide arresters with a new type of lead dampers[J].Journal of Chongqing University, 2013, 36 (7) :66-73.
[23] 柏文,戴君武,杨永强.瓷柱型电气设备基于BI-TMD的混合控制减震研究[J].中国电机工程学报,2019,39(13):3939-3947.
BAI Wen, DAI Jun-wu, YANG Yong-qiang. Effectiveness study of combined control strategy based on base isolation and tuned mass damper on porcelain cylindrical equipment[J]. Proceedings of the CSEE, 2019, 39(13): 3939-3947.