A numeric method for stochastic transient stability analysis of excitation control system

作者：Peng, Yunjian^*; Zeng, Jun; Deng, Feiqi

来源：Proceedings of the CSEE, 2011, 31(19): 60-66.

• Excitation control system
• Excitation controls
• Numeric analysis
• Numeric solutions
• Numerical results
• Stochastic disturbances
• Torsional oscillation
• Transient stability analysis

Considering the nonlinear effects of randomized torsional oscillation on the excitation regulation dynamic process of a generator rotor, an Itoˆ-type stochastic nonlinear model was proposed in the excitation control system (ECS). Based on this model, problems on numeric analysis of transient stability of ECS with stochastic disturbance were explored in details. By exploiting Monte-Carlo principle and numerical methods for solving nonlinear systems, the algorithms and workflow of the proposed ECS's transient stability analysis approach was presented. The workflow involved the simulation of stochastic disturbance, numeric solutions of the system model, formulas of stability probability and mean curve of the solutions. Finally, according to the numerical results, it is discussed how the ECS'performance is impacted by torsional oscillation of the generator's rotator. The results verify the validity of the presented algorithms in the paper.

• 出版日期2011-7-5
• 单位华南理工大学