Randomness exists extensively in nature

engineering and social systems

the power system not excepted. Randomness has gradually taken into consideration in power system analysis since the 1970s

with emphasis on analysis of steady-state random problems while research on power system dynamics is still based on the deterministic theory. In recent years

with increasing integration of typical sets of stochastic sources into power systems

such as the large-scale renewable power generation and electric vehicles

the influence of randomness on power system dynamics can no longer be neglected. For this reason

a research framework is proposed for stochastic dynamics of power system focusing on dynamic problems under the action of randomness

including stochastic dynamic modelling

stochastic dynamic responses

stochastic stability

stochastic dynamic security and stochastic optimum control of power system. Some suggestions are given for the research.