Refined evaluation of the damping characteristics of the power system when wind power is connected is essential for the construction of a new power system with new energy as the main body. The process of electromechanical oscillation is always accompanied by the dissipation of transient energy

which is the root cause of damping. By calculating the damping dissipation at the element level

this paper proposes a method for evaluating the local damping of electromechanical oscillations of power systems containing wind power. First

according to the energy method of electromechanical oscillation analysis

the transient energy function of the power system with doubly-fed induction generator is constructed; on this basis

the time-domain trajectory of the dissipated energy is analyzed. Then

according to the relationship between component energy dissipation and damping

a damping contribution factor index is established to evaluate the local damping contribution of the system; moreover

the calculation process of the damping contribution factor index based on the trajectory information is established through the preprocessing and the Prony analysis of the data.Finally

The effectiveness of the proposed local damping evaluation method is verified through simulation analysis under various conditions.