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Predictive maintenance strategy of variable period of power rransformer based on reliability and cost

机译：基于可靠性和成本的电力变压器变周期预测维护策略

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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
机译：周期相同的维护策略会随着维护时间的增加而降低变压器的可靠性，提出了一种基于成本低，可靠性高的变周期预测性维护策略。建立了加权的寿命减少因子和故障增加因子作为故障率的进化模型。建立了成本模型，其中的成本包括较小的维修成本，可预测的维护成本和生产性损失。然后建立了预测维修策略的最优模型，克服了相同时期无法运行的预测维修模型的缺陷。对故障时间分布满足Weilbull分布进行了仿真，结果表明该模型是有效的。

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