摘要
为了研究发电机饱和及励磁调节共同作用时对其静态稳定性的影响,提出了计及励磁调节器作用的功角曲线有限元算法,对比分析了发电机饱和及励磁调节作用对发电机极限功率和极限功角的影响。将用该方法计算的功角曲线用于小扰动后励磁调节器放大倍数的极限值和发电机运行极限的确定。结果表明,励磁调节器作用时发电机的静稳极限要增大,但若同时考虑同步发电机饱和作用,静稳极限要有所减小;发电机受到小扰动后,考虑同步发电机饱和作用时励磁调节器的放大倍数范围明显减小,发电机励磁电流调节量增大。研究结果为励磁调节器的参数整定与系统动态仿真提供必要的理论基础。
In order to research the influence of generator saturation and excitation regulation on static stability of synchronous generator,this paper presents a new finite element algorithm of power-angle curve with the effect of excitation regulator. The effect of generator saturation and excitation regulation on limit power of generator and limit power-angle has been analyzed. The power-angle curve calculated by the proposed algorithm can be used to determine the limit value of the amplification of excitation regulator after small disturbance and the operation limit of generator. The results show that the limit of static stability will increase with the effect of excitation regulator; however,it will decrease when generator saturation is also taken into consideration. If there is small disturbance,amplification of excitation regulator will decrease significantly with the consideration of synchronous generator saturation. And the regulating quantity of exciting current will increase. The results provide necessary theoretical foundation for parameter tuning of excitation regulator and system dynamic simulation.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2017年第1期58-64,共7页
Journal of North China Electric Power University：Natural Science Edition
基金
国家自然科学基金资助项目(51307049)
关键词
汽轮发电机
磁场饱和
有限元
功角曲线
静态稳定性
turbine generator
magnetic saturation
finite element
power-angle curve
static stability
