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电网技术  2011 

基于可靠度的电力变压器寿命分析

, PP. 127-131

Keywords: 电力变压器,可靠度,老化模型,状态评价,寿命分析,平均无故障工作时间,故障树分析法

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Abstract:

为掌握电力变压器全寿命周期的状态变化情况,基于故障树分析法建立了变压器可靠度模型及变压器老化模型,利用最小二乘法拟合变压器运行年限–平均可靠度关系曲线,计算变压器进入各个寿命阶段的年限及平均无故障工作时间,从而为确定最佳维修周期、制定最优维修方案提供科学依据,达到延长变压器有效使用寿命的目的。算例结果验证该方法的有效性。

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