Why is load balancing important in 3-phase networks?
It is just as important to balance single phase loads as it is three phase loads. The grounded circuit conductor (neutral) carries all unbalanced current. If the imbalance is greater than the neutral,it could become overloaded, heat up and start a fire. There is no over-current protective device for this conductor.
If you buy a transformer with two or more phases and then don’t balance the loads on those phases, one or more of the phases will have excess capacity that was not utilized effectively. Hence, if you balanced the loads, you can purchase a smaller transformer for less money. The money you save can be used to finance other endeavors.
If you have a transformer with unbalanced loads and then you balance them, you will have additional capacity for future expansion. This reserve capacity can be used to offset the purchase of a new transformer in the future which allows that money to be used for something else. It is a cost effective use of capital (money).
Finally, when the loads are balanced, the heating losses in the neutral conductor can be minimized and there will be a savings in the energy cost.
YT Active Load Balancer
Using single-phase loads on a three-phase electric power system (connected phase-to-phase or phase-to-neutral) results in unbalanced load conditions in the system. Unbalanced load currents result in unbalanced voltages and affect other loads connected at the point of common coupling. Unbalanced load conditions also cause excessive neutral current, resulting in overheating motors and transformers, power losses and lower system efficiencies. Load balancing is necessary to improve the power quality and efficiency of the system.
YTPQC Active Load Balancer (ALB) is using current control to deliver load balancing functionality in power grid with their full rated capacity. How this relates to power depends on variables like load power factor. They inject capacitive or inductive negative sequence current that has an opposite phase to the load negative sequence current. As a result, the network sees symmetrical load and phase voltages, and currents are balanced without exchanging active power between the network and the Active Load Balancer.
Subscribe to us to enjoy event prices and get some of the best prices.