摘要
断路器投运后会经历多次正常分合闸操作与故障跳闸,实时准确探知其损坏程度是变电运维人员的关注重点。文中提出了一种高压断路器寿命评估方法,实现了断路器健康水平动态预测,为运维工作中实时掌握设备健康状态提供了解决方案。基于评估指标在实际中存在随机性与模糊性,引入了随机模糊理论。考虑到评估指标存在多样性以及对设备的影响程度不同,利用所提的改进层次分析法,确定影响断路器健康水平各指标的权重,在此基础上,计算了断路器的健康指数(Health Index,HI),进而构建了断路器的寿命预测模型,最后基于某型断路器的现场数据,对该断路器的分合闸线圈部分进行了寿命预测,证明了所提方法在理论层面的可行性。
After the circuit breaker is put into operation,it will experience many times of normal switching-off and switching-on operation and fault tripping,and real-time and accurate detection of its damage degree is the focus of substation operation and maintenance personnel.This paper proposes a method for evaluating the service life of high-voltage circuit breaker to realize the dynamic prediction of the circuit breaker's health level and provide a solution for the real-time control of device health status in operation and maintenance.Based on the randomness and fuzziness of evaluation index in practice,the paper brings in the random fuzzy theory.And then,considering the diversity of evaluation indicators and the different impact on the device,the paper uses the improved analytic hierarchy process(AHP)to determine the weight of each index affecting the circuit breaker's health level,on the basis of which the health index(HI)of circuit breaker is calculated and the life prediction model of circuit breaker is constructed.Finally,based on the field data of a certain type of circuit breaker,the paper predicts the service life of the breaker's switching-off and switching-on coil,which proves the theoretical feasibility of the proposed method.
作者
叶昱媛
朱萌
郑建勇
於燕青
徐伟伦
陈昊
张海华
YE Yuyuan;ZHU Meng;ZHENG Jianyong;YU Yanqing;XU Weilun;CHEN Hao;ZHANG Haihua(Maintenance Branch,State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing Jiangsu 211102,China;Marketing Service Center,State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing Jiangsu 211103,China;Southeast University,Nanjing Jiangsu 210096,China)
出处
《湖北电力》
2020年第1期49-57,共9页
Hubei Electric Power
基金
江苏省基础研究计划(自然科学基金)(项目编号:BK20170672)
关键词
断路器
随机模糊理论
改进层次分析法
寿命预测模型
circuit breaker
random fuzzy theory
improved analytic hierarchy process
life prediction model
