王凡,胥国毅,邵冲,毕天姝.基于灵敏度分析的新能源电力系统同步机组调差系数优化方法[J].电测与仪表,2024,61(3):145-152. WANG Fan,XU Guoyi,SHAO Chong,BI Tianshu.Optimization method of synchronous generator adjustment coefficient for power system with high penetration of renewable generation based on sensitivity analysis[J].Electrical Measurement & Instrumentation,2024,61(3):145-152.
基于灵敏度分析的新能源电力系统同步机组调差系数优化方法
Optimization method of synchronous generator adjustment coefficient for power system with high penetration of renewable generation based on sensitivity analysis
High penetration of renewable generation and formation of ultra-high voltage AC/DC power grids increase the risk of transient frequency stability events. One of the most efficient methods to improve the frequency stability capability of the power system is to enhance the frequency regulation capability of the synchronous generators. First, through the trajectory sensitivity, the dominate parameter which influences the maximum frequency deviation was analyzed, and then it is optimized to reduce the maximum frequency deviation of the power system. The mathematical model of the adjustment coefficient optimization problem was established. The effect of adjustment coefficient on the maximum frequency deviation was analyzed analytically, and the nonlinear optimization problem was approximated with a linear programming problem according to the sensitivities to reduce the calculation load. On this basis, an optimization method of adjustment coefficient for multi-machine power systems was proposed. Finally, the effectiveness of this method was verified by simulation examples.
