The invention relates to a method and a system for power grid stabilization situation assessment independent of system disturbance track. In the method, a transient process after a power grid is disturbed is divided into two stages and two states are extracted. Firstly, the system remains stable after being disturbed is assumed, and then transient state energy transfer rule is expounded for each stage, and a transient state energy distributed computing method is given for each state, and finally according to transfer and distribution characteristics of transient energy in a power grid, actualstabilization situation after the system is disturbed is assessed. Through quantitative analysis of transfer and distribution characteristics of transient energy in different stages, based on relations of the quantitative analysis and system transient stability, power grid stability assessment results after the system is disturbed can be rapidly given according to electrical state quantity beforefaults and network topological structure and fault places, without depending on a system disturbed track. The method and the system provide powerful basis for taking effective safety control measures.