Wind power plant SVG room ventilation control system and control method

The invention relates to the technical field of ventilation control systems, in particular to a ventilation control system and a ventilation control method for an SVG (Static Var Generator) room of a wind power plant, and solves the problems that the quality of indoor radiating air is reduced and indoor facilities are damaged due to the fact that humid air and rainwater directly enter indoors in the prior art, so that the maintenance time of equipment is shortened, and the maintenance cost is reduced. In the prior art, the maintenance cost is increased, the service life of the equipment is shortened, and a large amount of sundries and water drops are left on the equipment, so that the equipment often trips. According to the wind power plant SVG room ventilation control system and control method, an indoor temperature sensor and an indoor humidity sensor send numerical values to a micro-processing unit, SVG air cooling circulation is changed into half inner and half outer circulation from full outer circulatio