| 摘要 |
A system and method for controlling energization of a tap changer power transformer. A first status of the tap changer, and accordingly a value of a remanent flux remaining in the transformer, is determined after opening of a switching arrangement for disconnecting the transformer from a source and de- energizing the transformer. A second status of the tap changer, and accordingly a value of a dynamic magnetic flux generated by the transformer, is determined before closing of the switching arrangement for connecting the transformer to the source, thereby energizing the transformer. A closing angle at which to close the switching arrangement is determined, the remanent flux value substantially equal to the dynamic magnetic flux value at the closing angle. A control signal is output for causing the switching arrangement to be closed at the closing angle, thereby energizing the transformer. |
