针对低压系统中的过、欠电压保护装置只有物理模型,而没数学模型的前提下,提出了利用算法对其进行建模,为以后建立在复杂电网情况下,过、欠电压保护装置的工作模型奠定基础。从数学角度补充了过、欠电压保护装置在理论上的空白。 For the low voltage system, over-voltage protection device only physical model, but no mathematical model under the premise of using the algorithm to model it for the future in the case of complex power grid, over-voltage protection device work The model lays the foundation. From a mathematical point of view, over-voltage protection device in the theoretical gap.