using advanced computational methods for power grid analysis in metallurgical industry

The article deals with using computational method and digital filters in power grid quality analysis in metallurgical industry. Almost all of metallurgical factories using large engines, arc furnace, induction heating and so on. This amount of non-linear loads which are connected to power grids cause heavy disturbances, which can cause big problems like damage or even destruction of machines or devices connected near the point, where disturbances occur, for examples near cities. Identification of disturbances is then very important for elimination of these problems. The article describe usage of digital filters which are applied on measured signal from power grid. Using these types of digital filters is necessary for identification problem in power grid.