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基于LMS提出一种精确获取电缆热路模型中热特征参数的实验分析方法.利用6942XL型电缆、Pico温度采集系统、逆变系统、电阻性负载系统构建实验平台.在Matlab集成开发环境中分别基于该实验分析方法、IEC方法计算出实验用电缆的热特征参数,以估计电缆内部各层温度的方式,探讨该实验方法的电缆热特征参数的分析精度.实验结果表明,该实验法可有效获取电缆的热特征参数,其精度高于传统的IEC法.“,”An experimental analysis approach for obtaining precisely characteristic parameters of cable thermal circuit model was presented based on LMS algorithm.The experimental platform was set up,which consisted of 6942XL type of cable,Pico temperature acquisition system,inverter system and resistive load bank.In Matlab integrated development environment,the thermal characteristic parameters of the experimental cable were calculated according to the proposed experimental method and IEC approach,respectively.The analysis accuracy of thermal characteristic parameters of cable based on the proposed experimental method was discussed according to estimating the temperatures of the cable inner layers.The experimental results show that the proposed experimental approach is effective to obtain more accurate thermal characteristic parameters of cable than those based on traditional IEC approach.