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作 者:彭添[1] 何畅[1] 卓然[2] 谢强[1] PENG Tian HE Chang ZHUO Ran XIE Qiang(College of Civil Engineering, Tongji University, Yangpu District, Shanghai 200092, China Electric Power Research Institute, China Southern Power Grid Co., Ltd., Guangzhou 510080, Guangdong Province, China)
机构地区:[1]同济大学土木工程学院,上海市杨浦区200092 [2]中国南方电网科学研究院有限责任公司,广东省广州市510080
出 处:《智能电网》2017年第2期111-117,共7页Smart Grid
基 金:教育部霍英东教育基金会优选资助课题(114021)~~
摘 要:特高压三柱型直流隔离开关是换流站中的重要设备,目前对其抗震性能的研究较少。为评估特高压隔离开关的抗震性能,依据某±800 k V特高压工程中的直流隔离开关,通过精细化有限元分析,计算该设备关键部位的位移、应力及加速度,并分析支架型式及其连梁和隔离开关刀闸机构对隔离开关地震响应的影响。计算结果表明,采用复合材料的设备在地震动作用下,其顶部位移较大,使用管母线以及冗余度较小的软母线连接时,母线对设备可能存在牵拉作用。支架连梁及刀闸机构对设备的刚度影响显著。The ultra high voltage(UHV) DC disconnect switch with three insulators is a key component in converter substation and there is less study on its seismic behavior. To evaluate the seismic performance of the UHV disconnect switch, detailed FEM modeling analysis is carried out on a ±800 k V UHV DC disconnect switch in this paper. Displacements, stresses and acceleration of the critical parts of the equipment are calculated. The influence of the supporting frames' coupling beams and the blades on seismic responses of disconnect switch is estimated. The calculation results indicate that there will be large displacements on the top of the disconnect switch if the insulators are made from polymer material and there might be negative impact on equipment by less redundant flexible bus or pipe bus. Also, the effects of coupling beam and the blade on stiffness of the equipment are significant.
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