三绕组高阻抗变压器联合运行分析及其仿真计算

Analysis and Simulation Calculation on Combined Operation of Three-winding High-impedance Transformers

本文作者分析高阻抗变压器漏磁特点,以高压绕组内置高阻抗为例,详细计算了全容量下高压对中压和低压联合运行阻抗和损耗,通过仿真计算得出采用长条磁屏蔽可最大限度降低油箱漏磁损耗,防止箱壁等发热。

The magnetic leakage characteristics of high impedance transformer are analyzed.Taking the built-in high-impedance of high voltage winding as an example,the impedance and loss of high voltage to medium pressure and low pressure combined operation at full capacity are calculated in detail.Through the simulation calculation,it is concluded that the long strip shaped magnetic shielding applied can minimize the magnetic leakage loss of the tank and prevent heating on the tank wall.