Для чего около электростанций устанавливают повышающий напряжение трансформатор?

                                                       My Pet
I`ve got a pet. It`s a dog. Its name is Ralf. It has got big ears,big eyes and a black nose. It`s white. Ralf is 4 years old. It can run, swim and jump. I go for a walk with Rulf every day. Ralf is very clever and funny. My dog likes to eat meat and bones. I like my pet very much.