In order to obtain the most economic benefits , the paper utilized the theory of " homalographic characteristic " and " share alike compensation current characteristic " to build up the best compensation relation for " hour - current " curve applied to transformer substation and for " length - current " curve applied to distribution line 以获得最大经济效益为目标，利用“等面积特性”和“补偿电流等分特性”理论。推导了应用于变电站的“时间?电流”曲线关系中存在的最佳补偿关系，以及应用于配电线路的“长度?电流”曲线关系中存在的最佳补偿关系，及补偿后的经济效益计算模型。
