无触点有载调压变压器分接头变换方式研究

摘要

Transformer on-load voltage regulation around joint transformation has a larger effect on the reliability of the pressure regulating and the structure of the tap-changer. In the process of transformation of the tap, transform circuit current should not be interrupted, and in the transformation can not appear larger overcurrent. Text by directly tap transform equivalent circuit loop current theoretical analysis, computer simulation and laboratory simulation experiment, when the output voltage was lowered, you could directly trigger, and without going through the transition loop, when you increased the voltage, must go through the string current limiting resistance transition loop can tap transform.%变压器有载调压时分接头变换方式对调压可靠性和分接开关结构具有较大影响。在变换分接头过程中，变换回路电流不中断，不可出现较大过流。文章通过对直接进行分接头变换的等值电路回路电流的理论分析、计算机仿真和实验室模拟试验进行研究，得到调低输出电压时，可直接进行分接头变换；而调高输出电压时，经过串接限流电阻的过渡回路进行分接头变换。