全寿命周期成本(LCC)分析是全寿命周期管理理念的核心． 文中针对电网及其主设备开展了 LCC 精细化模型研究，在 LCC 模型中增加了损耗传导成本项，并引入了基于通货膨胀率预测的经济学修正方法． 基于电网的特点(即总损耗的增加会引起发电侧成本的增加、下级电网损耗的增加会导致上级电网建设综合投资增加)，提出了电网损耗传导模型，并研究了损耗传导成本在 LCC 中占比的计算方法． 通货膨胀率预测采用差分自回归移动平均模型． 以典型电网为例，基于上述 LCC 模型研究分析了电网各环节的损耗分布，提出了配电网节能的必要性和重要性． 最后开展了损耗传导成本对电网 LCC 计算结果影响的实例分析，验证了损耗传导模型的实用性和工程应用价值．

The analysis of life cycle costs (LCC) plays a key role in the concept of life cycle management． In or-der to develop a more precise LCC model for the power grid and its main equipment，the inflation rate prediction method and the loss conducting model are introduced into the LCC model． Based on the power grid characteristics that the increase of total loss will cause the cost of generation side to increase and the loss of subordinate power grid will lead to the raise of the comprehensive investment of above grid，a power grid loss conducting model is pro-posed，and a method to calculate the loss conducting cost-to-LCC ratio is put forward． In addition，the inflation rate is predicted by using the autoregressive integrated moving average (ARIMA) model． Then，the loss distribution in each part of a typical power grid is analyzed based on the above LCC model，and the necessity and importance of the energy conservation in the power distribution grid are pointed out． Finally，a case study on the influence of the loss conducting cost on the LCC is performed，which proves that the proposed loss conducting model is of practical value．