Marquardt法借鉴了目前有关设备故障率的一些理论研究方法,提出了基于Marquardt法参数估计的变电设备寿命周期故障率评估的方法。该方法以电力变压器为例,通过建立电力变压器的故障树模型-Marquardt method draws on equipment failure rate is currently about some theoretical approaches, Marquardt method is proposed based parameter estimation failure rate of substation equipment life cycle assessment methodology. In this method, power transformers, for example, through the establishment of a power transformer fault tree model