| 摘要 |
PURPOSE:To enable to divide a load current into two equal parts using the on-load transformer by a method wherein a neutral point is formed by connecting one end of a neutral-point-side high tension winding unit to the winding of a main transformer and the other end of the winding unit is connected to the remaining two phases of a three-phase neutral point changing on-load tap changer. CONSTITUTION:The on-load tap changing transformer consists of a main transformer 10, having a main leg 1 of the single-phase core whereon a high-tension winding 2 and a low-tension winding 3 are wound, and a single-phase on-load voltage adjusting transformer 21 consisting of a neutral-point-side high tension winding units 7A and 7B, tap windings 5A and 5B, and exciting winding units 6A and 6B which have been wound on the legs 4A and 4B respectively. The winding units 7A, 7B and windings 5A, 5B on the transformer 21 are connected in series, one end of the windings 7A and 7B is connected to the winding 2 on the transformer 10, the other end is connected to the remaining two phases of the three-phase neutral point changing on-load tap changer 8 and form a neutral point. As a result, the on-load tap changing transformer, enabling to divide the load current into two equal parts by the on-load transformer 21, can be obtained. |
