Abstract: False data injection attack (FDIA),systematically tampering with measurements of power system,could bypass the classical bad data detection algorithm and then result in wrong output of power system state estimation,which poses a great threat to power system.However,FDIA also gives great challenges to attackers.To launch FDIA,attackers have to access the current power system configuration information firstly and manipulate the measurements of meters secondly.To lower the first attack condition,we analysis the configuration matrix of power system and propose FDIA based on partial configuration information,which greatly alleviates burdens on attackers.At last,we demonstrate the success of this attack through simulation of IEEE test systems.