仿真纵联差动保护，有一定的学习意义。模拟输电线路的闭锁式距离纵联保护建立 SIMULINK 仿真模型。加深我们对电气工程和 MATLAB 仿真的理解和认识。(The simulation longitudinal differential protection has certain learning significance. The SIMULINK simulation model is established to simulate the closed range longitudin