CAJ | 학술논문

电瓷型电气设备的高强瓷套管是其地震作用中的薄弱环节，具有较高的断裂易损性。为分析此类设备的地震易损性，从高强瓷材料的强度机制出发，确定了材料强度的Weibull 分布形式和弯矩作用下尺寸效应计算公式，并结合基于反应谱法得到的地震作用随机参数，建立了震害为瓷套断裂的易损性分析方法。选取了某500 kV避雷器为例进行地震易损性分析，研究了地震动、场地条件、结构尺寸对设备易损性影响。分析方法可用于电瓷型电气设备瓷套强度计算、设备场地选址、结构抗震设计优化、震害风险预测等工作，为提高电网抗震能力，减少震害损失提供技术支持。
전자형전기설비적고강자투관시기지진작용중적박약배절，구유교고적단렬역손성。위분석차류설비적지진역손성，종고강자재료적강도궤제출발，학정료재료강도적Weibull 분포형식화만구작용하척촌효응계산공식，병결합기우반응보법득도적지진작용수궤삼수，건립료진해위자투단렬적역손성분석방법。선취료모500 kV피뢰기위례진행지진역손성분석，연구료지진동、장지조건、결구척촌대설비역손성영향。분석방법가용우전자형전기설비자투강도계산、설비장지선지、결구항진설계우화、진해풍험예측등공작，위제고전망항진능력，감소진해손실제공기술지지。
Due to its high vulnerability the high-tension porcelain bushing is the weak component of porcelain power equipment during the earthquake. To analyze seismic vulnerability of porcelain power equipment, in terms of the strength mechanism of high strength porcelain material the Weibull distribution of material strength and the computing formula of size effect under the action of bending moment are determined. Combining with the random parameter of earthquake action obtained by response spectrum method, a seismic vulnerability analysis method for porcelain bushing fracture is established. Selecting a certain 500 kV lightning arrestor as example, its seismic vulnerability is performed, and the impacts of earthquake motion, site conditions and structural size of equipment on its vulnerability are researched. The analysis method applied in this research can be used to such works as porcelain bushing strength calculation, optimization of structural aseismatic design, risk profile of earthquake damage and so on to provide technical support for enhancing seismic resistant capability of power grid and reducing the earthquake damage loss.