In summer, due to the wind turbine being at full capacity for a long time, coupled with direct sunlight at high altitudes, the operating temperature of the oil products rises above the set value; When used in winter in the severe cold areas of Northeast China, the minimum temperature often reaches below -30 ℃, causing poor lubriion of the lubriing oil in the lubriion pipeline, insufficient lubriion of the gears and bearings, resulting in high temperature shutdown of the gearbox, wear of the tooth surface and bearings. In addition, low temperature can also increase the viscosity of the gearbox oil, causing heavy load when the oil pump starts and overload of the oil pump motor.
