More information on VAR Compensation

Reactive Power Compensation is an alternating current, which is used for the generation, transmission and distribution of electrical energy. With this type of energy, a distribution can be made between two types of power. The most important of these is naturally, the power which can be used by the load, e.g. the drive power of motor or the heating power of a smelting furnace. This described as the active power. The heat losses which occur in electrical machines, equipment and cable are also include here. In general terms, the active power is that power which the load in some way extracts from the supply network; at least the load does not return any active power to the energy generator.

The best way of relieving the equipment of inductive reactive current is by using a reactive current of the same type. This flows in the opposite direction to the inductive current itself, thus canceling it or compensating it. This requirement is met perfectly by the particular reactive current which is needed in capacitors to build up the electric field, the reactive power oscillates then only between the load and the compensating element, if such a compensation unit is placed directly beside a load requiring inductive reactive power. The cable and generator will, under optimum conditions, carry absolutely no reactive current; they will thus supply optimum active power.

The main purpose of reactive power compensation is to improve the efficiency of electrical equipment requiring high levels of energy.