My major is electrical engineering and automation. Power plant recruitment requirements are not color blind, but I find myself a little weak in color. Is it okay?

Yellow, green and red three-phase electricity can be distinguished, so there is no problem. You can get by when you have a physical examination. If you are really weak to a certain extent, I advise you not to work in the power industry. The output voltage of the generator is usually 10 kV. Go up again, and you may die in it. Life is more important than money.