3/2接线电流互感器安装位置和方向对保护的影响

摘要

介绍了500 kV主接线的特点，结合现场案例，分析了500 kV变电站3/2接线电流互感器安装位置和方向不同对保护的影响，指出在设计时要根据使用特点，合理地选择电流互感器的安装位置、P1的方向、二次绕组的套装位置，保证系统稳定运行。%Introduction was made to characteristics of 500 kV main wiring. Combined with onsite cases, this paper analyzed the impacts of 500 kV substation 3/2 wiring current transformer installation position and direction difference on protection. It was pointed out that in design the installation position of current transformer should be reasonably selected according to its use features, as well as the direction of P1 and suit posi-tion of secondary winding so as to assure stable operation of the system.