Overcurrent based time graded protection system

摘要

A method for detecting and disabling overcurrents in an electrical energy supply network (1), wherein the power supply network (1) by at least generating facility a Stromer- (2) is fed in isolated operation and at least one branch (AZ) with time-shared line protection elements (9) , whereby net parameters recorded and checked to predetermined criteria and depending on results of this test, a locating auxiliary power (iPilot) is fed into the electrical power supply network (1).