【摘要】 提出了大型电力变压器的可靠性增长模型,给出了该可靠性增长模型的参数估计与拟合检验方法,以及220 kV,330 kV,500 kV变压器可靠性增长的分析结果.变电站现场运行可靠性数据的验证结果表明,该可靠性增长模型符合220 kV,330 kV,500 kV变压器的可靠性增长规律.可靠性增长的分析结果表明,制造企业和电力企业采取的改善措施是有效的,国内220 kV,330 kV,500 kV变压器可靠性呈增长趋势.更多还原

【Abstract】 A reliability growth model of large-capacity power transformer is presented,together with a description of a method for estimating the parameters and testing the model fitting quality.Analysis results of reliability growth of certain domestic 220 kV,330 kV,500 kV power transformers are given.Verification with the available data of site operation reliability shows that the reliability growth model conforms to the reliability growth tendency well.The analysis results of reliability growth indicate that the remedial and improvement measures taken by manufacturers and users are effective and the reliability of domestic 220 kV,330 kV,500 kV power transformers tend to increase.更多还原