| 摘要 |
A constant magnetic flux voltage regulating structure of ultrahigh voltage self-coupling power transformer, comprising a main transformer body and a voltage regulating transformer body, the main transformer body comprising a series winding (HV), a common winding (MV), an excitation voltage regulating winding (JTV) and a third winding (LV) sleeved on the same iron core, the voltage regulating transformer body comprising a voltage regulating winding (TV) and an excitation winding (JV) sleeved on the same iron core; the series winding is in serial connection with the voltage regulating winding, and is subsequently in serial connection with the common winding; the excitation voltage regulating winding is in parallel connection with the excitation winding; the excitation voltage regulating winding is provided with a voltage regulating switch (K). The self-coupling transformer can connect two ultrahigh power grids, and by utilizing a constant magnetic flux voltage regulating method does not cause a third winding voltage fluctuation and iron over-excitation, reduces the level of insulation of a voltage regulating winding, and reduces cost and difficulty in manufacturing a voltage regulating switch. |
