Variable-power-consumption and high-reliability satellite-borne software thermal control method

The invention discloses a variable-power-consumption and high-reliability satellite-borne software thermal control method, relates to the field of aerospace application, and solves the problems that the power consumption control is inflexible due to the fact that thermal control low-power-consumption operation is realized by closing a heating loop and accurate control of thermal control actual power consumption is not involved in the existing method, and the power consumption is low under the condition of certain rated power consumption. According to the invention, thermal control is carried out according to a temperature control mode, a priority sequence and a thermal control total power consumption threshold value of each heating loop, the thermal control total power consumption threshold value can be changed in orbit through injection, and a thermal control function ensures that an actual total power consumption value of the heating loop is not greater than the total power consumption threshold value. And