SYSTEM AND METHOD FOR INCREASING THE CURRENT INJECTED INTO THE ELECTRICAL GRID BY ELECTRICAL GENERATORS DURING POWER DIPS GENERATED IN THE GRID

摘要

The invention relates to a system for increasing the current injected into the electrical grid by electrical generators during power dips generated in the grid, comprising: a power transformer (2) of the electrical generator (1) with taps in the windings thereof; an on-load tap changer (3) with electronic switches for performing tap changes in the power transformer (2); a measuring system (5) for obtaining the measurement of the phase voltages on one of the two sides of the power transformer (2); and a control system (4) for receiving the measurements taken by the measurement system (5), and analysing said measurements in order to detect power dips in the electrical grid, to determine the tap of the power transformer (2) to be switched in order to increase the current injected into the electrical grid, and to order the actuation of the switches of the tap changer (3) in order to perform the previously determined tap change.