CAJ | 학술논문

　　为实现更加坚强的电网目标，对变压器绕组变形进行在线监测显得越发重要。介绍了应用电流偏差系数法在线监测变压器绕组变形的基本原理，并在Simulink仿真平台进行仿真。经套管末屏向绕组中注入频率为600 kHz~1.2 MHz之间某一单一频率正弦信号，并测量绕组首端和中性点接地线上的高频电流，通过计算绕组首末两端电流的变化及电流偏差系数以确定绕组变形的程度、类型和位置。通过仿真，该方法不仅能够判断绕组是否发生变形，而且能够判断绕组变形的类型、程度和位置。该方法用于变压器绕组变形在线监测简单、有效。
　　위실현경가견강적전망목표，대변압기요조변형진행재선감측현득월발중요。개소료응용전류편차계수법재선감측변압기요조변형적기본원리，병재Simulink방진평태진행방진。경투관말병향요조중주입빈솔위600 kHz~1.2 MHz지간모일단일빈솔정현신호，병측량요조수단화중성점접지선상적고빈전류，통과계산요조수말량단전류적변화급전류편차계수이학정요조변형적정도、류형화위치。통과방진，해방법불부능구판단요조시부발생변형，이차능구판단요조변형적류형、정도화위치。해방법용우변압기요조변형재선감측간단、유효。
To achieve a stronger power grid,online monitoring of the transformer winding deformation becomes more impor-tant. The basic principles of transformer winding deformation online monitoring based on the current deviation coefficient method is introduced in this paper,followed by a simulation on Simulink platform. The single frequency sinusoidal signal at the range of 600 kHz~1.2 MHz is injected to the winding through the bushing tab to measure the high frequency currents at the line-end and neutral-end of the transformer winding,calculate the current variation and the current deviation coefficient of the line-end and neutral-end of the transformer winding,and determine the extent,type and location of the winding deformation. The simulation shows that the method can judge whether the winding deformation has happened,and determine the type,extent and location of winding deformation. The method is simple and applicable for online monitoring of the winding deformation.