Re-setting method and system for current protection containing photovoltaic power distribution network

The application provides a re-setting method and system for current protection containing a photovoltaic power distribution network. During a resetting process, the output capacity and the mounting position of a photovoltaic power supply are fully taken into consideration, and only the two variables, i.e., the photovoltaic capacity and the mounting position, are presented in a setting calculation formula. Therefore, a corresponding current protection setting value can be calculated without complicated transformations as long as the mounting capacity and the mounting position of the photovoltaic power supply are provided and line relevant parameters are given. In this way, calculation is simple and convenient, great transplantability is exhibited, and the problem that a conventional re-setting method is complicated in calculation is solved.