计及设备寿命折损的配电变压器经济运行方式效用分析

经济运行方式是变电站中变压器损耗最小的运行方式。变电站可通过一系列开关的投切动作实现在经济运行方式下运行。值得注意的是，变电站因为减小了损耗而获得了节能效益，但也会出现投切成本，因而变电站的节电利润应是二者之差。文中对此过程中的节能效益和投切成本各自的产生原因和含义进行了分析，对二者如何计算进行了探讨，并以实例阐述了变电站获得的最终节电利润的计算过程，为变电站进行某次具体投切的效用提供了重要参考。

A Study on Effectiveness of Economical Operation Mode of Distribution Transformer Considering Life Expectancy Loss of Electric Equipment

The economical operation mode is an operation mode in which the loss of transformers in the substation is least.The substation can run in the economical operation mode by means of a series of switching motions.It is worth noting that the substation does not simply obtain energy-saving benefits from a reduction in loss but also there is the cost of switching motions.Therefore the profit from energy saving should be the difference between the two.This paper analyzes both their respective causes and meanings,d...