An Onboard Energy Scheduling Method Based on Energy Status for Remote Sensing Satellites

Abstract

The invention discloses an onboard energy scheduling method based on energy states and applicable to remote sensing satellites. The method comprises steps that power supply state intervals are divided according to charge conditions of a storage cell set, onboard computer resources are utilized to acquire relevant parameters of an energy system in real time, for an injected satellite work mode, an energy system power supply state is calculated, and scheduling is carried out to determined whether the work mode can be performed. According to the method, power supply capacity and a load electricity load state of the onboard energy system are determined according to the remote measurement parameters in real time, calculation deviation caused by inaccurately-acquired ground budget parameters can be avoided, autonomous onboard energy state calculation under a multi-combination variable work mode is realized, an onboard energy utilization rate is substantially improved, and satellite business capability is improved; according to the autonomous onboard energy state calculation result, onboard energy scheduling can be timely carried out, excessive energy utilization under energy system fault and electricity load increase conditions can be avoided, and safety of the onboard energy system is improved.

Description

technical field [0001] The invention belongs to the field of aerospace technology, and relates to an on-board energy scheduling method for remote sensing satellites based on energy states. Background technique [0002] The spacecraft energy management problem is a classic resource allocation optimization problem. The short-term load distribution of the power supply and distribution system is an important part of the optimal operation of the power supply and distribution system. If the power supply capacity cannot meet the power demand of the normal working electrical load, it is necessary to automatically unload part of the electrical load to match the power consumed by the electrical load with the power supply of the power system, and try to ensure that the spacecraft completes the flight work mode or Ensure that the basic operating status of the spacecraft in orbit is normal. [0003] For a space spacecraft energy system, the amount of energy it can provide is limited. ...

AI Technical Summary

Problems solved by technology

For remote sensing satellites, the working mode is complex. Due to the diversity of working mode requirements, the working mode has the characteristics of multiple combinations and variability. The ground energy balance calculation can only give the envelope of a certain working mode, and cannot be based on the load. Combination, change and timely determination of energy status

[0006] (2) There is a deviation in the calculation accuracy

The energy system parameters used in the budget are mainly based on ground simulation, test, and test data as input conditions, and there are deviations from the on-orbit data. Therefore, a relatively conservative budget method is often adopted and calculated according to the worst conditions to reduce energy utilization efficiency.

[0007] (3), unable to monitor the energy situation in real time

When the energy system fails and the power supply capacity is degraded, the result of the ground energy budget will not be applicable, and the autonomous energy scheduling cannot be realized on the star. If it is used according to the predetermined working mode, it will bring risks to the entire star energy.

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