Adaptive protection overcurrent control system and method for responding the change of power system

摘要

An adaptive protection overcurrent control system capable of actively responding to changes in the state of a power system such as a connection between distributed power sources and fluctuations in load and a method for responding the changes in a power system are disclosed. The adaptive protection overcurrent control method for responding to changes in a power system includes a step of determining a correction value according to load current values by time section based on data about the current causing an accident of a power system before being adjusted; a step of detecting whether the power system has been adjusted; a step of calculating a new correction value or a corrected lever value for the adjusted power system; a step of detecting whether an accident has happened or not in the power system; and a step of identifying the location of the accident and performing a main protection action or a back up protection action with the accident spotted. [Reference numerals] (AA) START;(BB) END;(S110) Determine an initial correction value according to load current values by time section based on data about the current causing an accident of a power system before being adjusted;(S130) Detect whether the power system has been adjusted and how the system has been adjusted;(S150) Calculate a new correction value or a corrected lever value for the adjusted power system;(S170) Detect whether an accident has happened or not in the power system;(S190) Identify the location of the accident and perform a main protection action or a back up protection action with the accident spotted