What is the difference between distribution automation terminal (DTU) and relay protection equipment (microcomputer)?

1, installed in different locations, one in the substation and the other in the postal exchange or ring network cabinet.

2, different functions, protection equipment is to protect the power grid equipment, and timely respond to faults and abnormal situations; Although dtu can also respond to faults, its main function is to collect various electrical quantities and signals, and it can also play the role of remote control.

Some dtus have protection functions. Generally speaking, the protection of power grid still depends on relay protection, and the protection function of distribution automation equipment only plays an auxiliary role, and the relationship between them is superior and subordinate in the scope of protection. The setting value of DTU protection action should be coordinated with the setting value of station protection.