特高压支柱类瓷质电气设备支架动力放大系数研究  

Study on Support Dynamic Magnification Coefficient About UHV Pillar Type Porcelain Electrical Equipments

作　　者：程永锋[1] 卢智成[1] 邱宁[2] 高坡[1] 鲁先龙[1] 朱祝兵[1] 

机构地区：[1]中国电力科学研究院,北京100192 [2]国家电网公司交流建设部,北京100031

出　　处：《高电压技术》2015年第11期3651-3658,共8页High Voltage Engineering

基　　金：国家电网公司科技项目(5299001352U7)~~

摘　　要：在对特高压支柱类瓷质电气设备进行抗震性能评估时,其支架动力放大系数取值的准确性与合理性直接关系到设备抗震性能评估结果的准确性。为了得到支架动力放大系数更合理的取值,对比了不同规范对支架动力放大系数的取值规定,并通过数值分析,针对特高压瓷质支柱类电气设备,分析了不同参数在一定范围内变动时对支架动力放大系数的影响规律。结果表明：支架动力放大系数与诸多因素有关,结合分析结果并考虑安全和经济双重因素,建议支架动力放大系数取值不宜小于1.4;在对支架进行设计时,支架频率应尽量避开支架动力放大系数的峰值点,支架频率宜控制在15~20 Hz范围内,且不宜小于15 Hz,此时支架动力放大系数取值基本趋于稳定,既避开了曲线的峰值点,支架动力放大系数较小,又满足了设备的抗震需求,也不会因支架设计的刚度过大而造成原材料的浪费。In the evaluation of the seismic performance of the UHV pillar type porcelain electrical equipment, the accu- racy of support dynamic magnification coefficient value is directly related to the accuracy of .the seismic performance evaluation results. In order to get a more reasonable value of support dynamic magnification coefficient, we compared different specifications＇ stipulation on support dynamic magnification coefficient value. Moreover, through numerical analysis, in view of the UHV porcelain pillar type electrical equipment, we analyzed the influences of different parameters on dynamic magnification coefficient within a certain range. The results show that the support magnification coefficient is related to many factors, and considering the safety and economic factors, it is suggested that support dynamic magnifica- tion coefficient values should not be less than 1.4. In the design of the support, frequency should be selected to avoid the peaks of the dynamic magnification coefficient and to be in a range of 15 Hz to 20 Hz. Therefore, the values of the sup- port dynamic magnification coefficient will tend to be stable, which not only avoid the peak point of curve, but also meet the seismic requirements of equipment; meanwhile, the raw material waste caused by big stiffness of bracket design can also be avoided.

关 键 词：特高压 支柱类瓷质电气设备 抗震性能 支架动力放大系数 场地类别 合理取值 

分 类 号：TM503[电气工程—电器]