This is not necessary. If there is no internet or the conditions are not met, and you want to check the vibration and exercise the auxiliary machine, you can run it fully as long as there is no power excitement, heat. will not be very big, and it is not charged with hydrogen, when the rotor turns, the internal airflow is also circular instead of dead. There are too many cases of starting without hydrogen charging, which has happened in many power plants. the commissioning phase!
Common cooling methods for turbogenerators include:
(1) Air cooling. It is divided into open air cooling and closed circulation air cooling. The so-called open-air cooling consists of the fact that in ordinary small generators the generator fan draws cold air into the engine from the factory building, refrcolds each part, then evacuates it out of the machine. Closed cycle air cooling is used in large and medium sized generators. After the cooling air exits the generator, it is conducted under the machine pit. After being cooled by a set of air coolers, it is driven into the engine by one. fan. This air always circulates inside to keep the machine clean.
(2) Water cooling. Generally, it is internal double water cooling, that is, the conductors of the stator winding and the rotor excitation winding are hollow, the water from Cooling passes inside the conductors and the stator bore is always cooled by air. Although the cooling efficiency is high, the interior of the driver is prone to scaling and clogging.
(3) Hydrogen cooling. It is divided into two cooling methods: reexternal hydrogen cooling and hydrogen and water cooling. External hydrogen cooling is the same as air cooling, except the cooling medium changes from air to hydrogen, but the hydrogen cooler is inside the machine. The difference between water-hydrogen cooling and hydrogen cooling is that the conductor of the stator winding is filled with cooling water and the rest is the same as the external hydrogen cooling method.