.PowerGrids.Electrical.Test.TestTransformerWithTapChangerMax

Information

This model demonstrates the correct behaviour of a transformer with a tap-changer logic of type MAX.

The test circuit is composed by a transformer whth a simple linear load. The transformer is supplied by an ideal infinte bus with variable voltage. The linear load is obtained using a real bus with fixed voltage, the internal impedance of the bus is used as linear load.

The voltage applied at the transformer primary input has sinusoidal shape, the tap-changer logic follows the shape of said voltage. The tap position starts to decrease when the monitored voltage portB.U becomes higher than UMax threshold, and stops when said monitored voltage reaches and stays under the UStop threshold.

Values of voltages and and transformer ratio for each tap position are not realistic, they are just to show the tap changer logic behaviour.



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