摘要
某城市轨道交通接触网瓷绝缘子已运行近40年,逐渐呈现故障率上升的趋势。该城市轨道交通运维部门提出了对绝缘子剩余寿命进行评估和制定维护策略的需求。根据该城市轨道交通线路不同运行年限绝缘子样本及评估要求,制定了一套涵盖绝缘子表面退化、机械性能及电气性能在内的老化寿命试验方案,并采用模糊评判法对试验数据进行分析,得出城市轨道交通接触网瓷绝缘子的剩余寿命评估结果:机械性能、表面退化及电气性能按权重顺序依次影响瓷绝缘子剩余运行寿命;基于试验及模糊评价理论的剩余寿命评估方法能够评估瓷绝缘子的剩余寿命;机械性能是影响瓷绝缘子运行的核心性能指标,应对老旧瓷绝缘子机械性能进行定期检验,并根据检验结果确定是否需要更换。
The porcelain insulators of an urban rail transit OCS(overhead catenary system)have been in service for almost 40 years,and are showing upward trend of failure rate.The urban rail transit operation and maintenance department has put forward a demand of evaluating the porcelain insulator residual life and developing maintenance strategy.According to the insulator samples of different service years and evaluation requirements of this urban rail transit line,an aging lifespan test plan for insulator surface degradation,electrical and mechanical performance is developed,and then the test data are analyzed using fuzzy evaluation method.Residual life evaluation results of the urban rail transit OCS porcelain insulators are obtained:mechanical performance,surface degradation and electrical performance affect the porcelain insulator residual life by weight sequence;the residual life evaluation method which is based on test and fuzzy evaluation method can evaluate it for porcelain insulator properly;mechanical performance is the core performance index that affects porcelain insulator operation,and to carry out mechanical performance test on aging porcelain insulators at fixed period and then determine whether replacement is needed accordingly.
作者
张贤玉
ZHANG Xianyu(State Key Laboratory of Rail Transit Engineering Informatization(FSDI),710043,Xi’an,China)
出处
《城市轨道交通研究》
北大核心
2023年第5期94-99,104,共7页
Urban Mass Transit
基金
中国铁路总公司科研开发计划项目(2015T002-B)。
