With the continuous growth of power grid scale and progressive implementation of ubiquitous power internet of things

the operating environment of power system is becoming more and more complex

and the requirement of information and communication systems to ensure the safe and stable operation of power grid is higher and higher. When network and information systems encounter various emergencies

it is an important work of system operation and maintenance that how to make emergency response to improve fault disposal efficiency as much as possible. This paper summarizes the key points and logic of non-scripted emergency drills of network and information systems

innovates the method of non-scripted emergency drills

which is beneficial for promoting emergency management level of information and communication speciality

and provides reference for relevant units to carry out non-scripted emergency drills.