Decisive substation operation and inspection is relatively more technical, especially relay protection, which is the easiest and has the best development prospect. Especially for you, a graduate student, there is really nothing to compare. Here we are. Substation transportation inspection has the most development prospect.

Substation operation and maintenance are separated. Substation operation is mainly to patrol the substation and operate all kinds of equipment, usually on duty in shifts.

Substation overhaul is mainly responsible for substation overhaul and maintenance, with many branches, professional and meticulous, and the work is basically carried out in the substation, which is generally divided into primary and secondary.

Transmission inspection is mainly responsible for the maintenance of transmission lines, running all over the mountain and climbing towers, which is very tired.

Urban power distribution is mainly responsible for the maintenance of urban distribution lines and transformers, which is equivalent to a reduced version of transmission inspection. I have to climb the pole, which is not tiring to send electricity, but it is also a kind of work that is tiring for the power system.

In short, transmission inspection and distribution is a thankless job. Although it is generally believed that their technical content is not high, for graduate students and even undergraduates, their work is not simpler than substation inspection and distribution, which is a bit wasteful.