A Fast Assessment Method for New Energy Power System Stability Based on Transient Energy Estimation

Aiming at the rapid assessment of the stability of new energy power systems, this paper proposes a transient voltage stability assessment method based on the network reactive energy magnitude (MLE). Firstly, a network energy function based on the response trajectory is constructed based on the Lyapunov function as a measure of the stability of the new energy power system, and then the MLE stabilization criterion based on the network reactive energy is proposed, as well as the stabilization assessment process. Finally, a standard example of CSEE-VS of electromechanical transient in China's actual engineering situation, is used for simulation verification, which proves the correctness and effectiveness of the methodology in this paper.