摘要
利用克里金插值法,计算了汶川地震中四川省绵阳、德阳、广元地区和成都部分地区110 kV及以上变电站位置的仪器地震烈度,采用高斯分布的累积函数拟合了110 kV及以上变电站的变压器,电压互感器,电流互感器,断路器,隔离开关,避雷器等高压电器设备的破坏率-仪器地震烈度曲线,分析了高压电气设备基于仪器地震烈度的破坏概率密度分布。结果表明:高压电气设备中,变压器最容易发生破坏,在较低的仪器地震烈度下就有破坏,当仪器烈度达到8+时就会产生较多破坏;其次为断路器,仪器地震烈度为9+时最容易发生破坏;避雷器、电流互感器、电压互感器、隔离开关的破坏率曲线较为接近,且在仪器地震烈度为10左右时破坏概率密度最大。
The instrumental seismic intensity values of location of 110 kv-and-above substations in Mianyang,Deyang,Guangyuan and parts of Chengdu in Wenchuan Earthquake were calculated by using Kriging interpolation method.The damage rate-instrumental seismic intensity curves of transformers,potential transformers,current transformers,circuit breakers,disconnecting switches and lightning arresters of 110 kv-and-above substations were fitted by Gaussian distribution accumulation function.The damage probability density distribution based on instrumental seismic intensity of high voltage electrical equipment was analyzed.A series of conclusions are derived.For all equipment,transformers were the most vulnerable and damage occurred at lower instrumental seismic intensities,and there would be more damage when the instrumental seismic intensity reached 8+.Circuit breakers ranked second and damage easily occurred at the instrumental seismic intensity 9+.The damage rate curves of lightning arresters,current transformers,potential transformers were very close.The damage probability density is the largest when the instrumental seismic intensity is about 10.
作者
刘如山
熊明攀
马强
田得元
LIU Rushan;XIONG Mingpan;MA Qiang;TIAN Deyuan(Institute of Engineering Mechanics,Key Laboratory of Earthquake Engineering and Engineering Vibration,China Earthquake Administration,Harbin 150080,China)
出处
《自然灾害学报》
CSCD
北大核心
2021年第2期14-23,共10页
Journal of Natural Disasters
基金
大中城市地震灾害情景构建重点专项(2016QJGJ11)
国家重点研发计划项目课题(2018YFC1504602)
中国地震局工程力学研究所基本科研业务费专项(2018A02)。
关键词
高压电气设备
汶川地震
仪器地震烈度
易损性
high voltage electrical equipment
Wenchuan Earthquake
instrumental seismic intensity
vulnerability
