Energy efficiency improving of reactive power compensation devices

The article describes a method for reducing the influence of the high harmonics on the operation of reactive power compensation devices. This method based on the variation of the power system resistance and the separation of linear and nonlinear loads. The resistance of the power system within the considered plant is proposed to change by replacing the double-winding transformer to split-winding one. Current harmonic composition data are obtained by measurements at an aluminum plant. In this work calculations of the necessary extent of the system resistance have been made to reach allowed current values on capacitors. The constructed graphs allow to determine the zone of the possible system resistance variation in which the capacitor batteries operate without overloads. Algorithm of methods to reduce high harmonics is used by means of the given criterion.