METHOD FOR REGULATING THE VOLTAGE OF A TRANSFORMER

摘要

The invention relates to a method for regulating the voltage of a transformer (1) having different winding taps (3). The problem addressed by the invention is that of providing a method with which different load flow directions can be regulated with conventional transformers (1) and voltage regulators (7) in order to ensure a safe and reliable supply of voltage. The general inventive concept consists in determining, using a method in which a quadrant system (11) is used, the phase angle of the conduction current (I) and thus the load flow direction, thereby preventing deviation from the voltage range as a result of power input that is too high, by controlling the load tap changer (4).

主权项

1. A method for voltage regulation of a transformer with different winding taps and a voltage regulator, comprising the steps of:
initially determining the conduction current present at the transformer and simultaneously ascertaining the instantaneous voltage present at the transformer; using a quadrant system in which a first quadrant and a second quadrant show the phase position φ of the conduction current from generators to the transformer and a third quadrant and a fourth quadrant show the phase position φ of the conduction current from the transformer to the consumers; and if the phase position φ of the conduction current is detected in the third quadrant or in the fourth quadrant of the voltage regulator, raising an instantaneous voltage to a target value range or if the phase position φ of the conduction current is detected in the first quadrant or in the second quadrant of the voltage regulator, lowering an instantaneous voltage to a target value range.