Method and apparatus for detecting a fault in a system of high impedu00c2ncia distribuiu00c7u00e7o of nergia electric multi grounded

摘要

Method and apparatus for detecting a failure of high impedu00c2ncia in a system of electric energy distribuiu00c7u00e7o multi grounded.The apparatus and methods calculate a plurality of sum of differences to a quantity of power distribution system with a sum of difference filter, provide a set of conditions to provide a predetermined block, trend and memory with an outlet.Generate a fixed threshold adaptive algorithm with a tuner; establish a reference based on the plurality of different quantities of energy distribution in the filter of difference of one cycle and the fixed threshold, calculating a ratio of the difference between the plurality of sum of differential Enu00e7as sum difference filter and the reference.Memorizam time and form an output of the trend if the relationship of the difference exceeds the fixed threshold, and determining the existence of a failure of the high impedance with logical decision based on the output of the trend and in the set of conditions of predetermined block.