Data-driven earth observation satellite power supply system emergency guarantee capability evaluation method

Abstract

The invention provides a data-driven earth observation satellite power supply system emergency guarantee capability evaluation method comprising the following steps: obtaining a satellite telemetry historical data set, and preprocessing the historical data set; predicting the output power of the solar cell array in the future according to the preprocessed historical data set of the solar cell array; according to the preprocessed historical data set of the relevant parameters of the storage battery pack, calculating the energy consumption of the satellite for executing various types of tasks onorbit; constructing a storage battery pack state-of-charge simulation process according to the predicted output power of the solar battery array and various types of on-orbit task energy consumptionof the satellite; inputting a to-be-evaluated emergency task into the storage battery pack state-of-charge simulation process to obtain a storage battery pack state-of-charge prediction value; and comparing the predicted value of the state of charge of the storage battery pack with a discharge depth threshold, and giving an evaluation result. According to the invention, the satellite telemetry historical data set and the task instruction information are analyzed to obtain the guarantee evaluation result of the power supply system under the emergency task condition.

Description

technical field [0001] The invention belongs to the field of on-orbit health management of a satellite power supply system, and in particular relates to a data-driven evaluation method for emergency support capability of an earth observation satellite power supply system. Background technique [0002] The power supply system is an important support system of the satellite platform, and usually adopts a system structure based on a solar cell array-battery pack, which is mainly composed of a solar cell array, a battery pack, and a power control device. The power supply system is the main energy source for the normal operation of the satellite in orbit: when the satellite is in the illuminated area, the solar cell array absorbs solar radiation to generate electricity, part of it is used for charging the battery pack, and the other part is used to maintain the energy required for the satellite’s in-orbit operation Consumption; when the satellite moves to the shadow area, the sol...

AI Technical Summary

Problems solved by technology

However, in some emergency situations (such as major natural disasters or wars), whether the satellite power system can guarantee the completion of some emergency earth observation tasks with greater mobility or longer mission time, and whether the execution of these emergency tasks will make the satellite battery pack The depth of discharge exceeds the limit, whether the battery pack can be fully charged in the subsequent cycle, and how many cycles the power system needs to restore the energy balance state, etc. These problems currently lack scientific and effective technical means to solve them

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