【作者】 胡志坤； 姜斌； 尹林子； 陈晓龙；

【Author】 Hu Zhikun1,2, Jiang Bin1,Yin Linzi2,Chen Xiaolong2 (1 College of Automation Engineering. Nanjing University of Aeronautics and Astronautics. Nanjing 210016. China; 2 School of Physics and Electronics, Central South University, Changsha 410083, China)

【机构】 南京航空航天大学自动化学院； 中南大学,物理与电子学院；

【摘要】 等周期检修策略使得电力变压器随维护次数的增加可靠性逐渐降低,提出基于成本和可靠性的电力变压器变周期顺序维护策略。建立了一种基于寿命减少因子和故障增加因子的加权值作为故障率的演化模型,设计了考虑小修费用的费用计算模型,构建基于成本和可靠性的预防性维修策略优化模型,克服了等周期预防性维修模型不可操作的缺点。以故障时间分布符合威布尔分布的电力变压器为例进行仿真,结果表明该模型的有效性。更多还原

【Abstract】 The maintenance strategy of identical period can decrease the reliability of power transformer with the increase of the maintenance times, and a predictive maintenance strategy of variable period of power transformer was presented considering low cost and high reliability. An evolutive model of fault rate, which life decreaseing factor and fault increasing factor were weighted to act as, was constructed. The cost model was built which the costs included small repairing cost, predictive maintenance cost and productive loss. And then an optimal model of predictive maintenance strategy was built bo overcome the shortcoming of predictive maintenance model with identical period which is not operational. Simulation that the distribution of fault time satisfy Weilbull distribution is carried out, and results show that the model is effective更多还原