Once a short circuit or power failure occurs in the satellite EPSS,it may cause catastrophic consequences such as satellite failure.Thereby the safety of satellite EPSS is a basic guarantee condition for successful and reliable on-orbit operation of a satellite.Aiming at the high-risk characteristics of EPSS for a satellite carrying high power and high voltage loads,various safety design measures have been proposed and applied in the present work to ensure the power safety of the satellite,such as platform and load dual independent power bus,battery discharge overvoltage protection,current limiting protection and satellite discharge switch safety control.The satellite on-orbit operation shows that the proposed satellite EPSS system has good safety condition and facilitates stable and reliable operation of satellite.
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