摘要
设计了一套阻尼区域间功率振荡的模糊控制器。在多馈入交直流输电系统的直流功率控制系统和发电机励磁系统中同时采用了该模糊控制器,并对影响其性能的关键参数进行了协调优化。为了解决优化结果容易限于局部最优的问题,采用了遗传算法进行全局并行寻优,同时引入序优化理论在概率意义上保证优化解的质量。仿真结果表明:与常规阻尼控制器相比,模糊控制器能更好地提高交直流互联系统的动态稳定性且具有鲁棒性。序优化遗传算法比传统遗传算法具有更稳定的性能,可作为多馈入交直流输电系统的模糊控制器参数协调优化的一种有效方法。
A fuzzy damping controller is designed to damp inter-area power oscillation. The proposed fuzzy controller is applied to dc power control system and excitation system of a multi-infeed AC/DC power system with coordination of controller parameters. To avoid obtaining locally optimized solutions, genetic algorithm is used to search optimal parameters of fuzzy controllers. Moreover ordinal optimization is introduced to guarantee the quality of solution at high probability. Simulation results demonstrate that coordinated optimal fuzzy controllers can enhance dynamic stability of AC/DC interconnected system more effectively and have better robustness than conventional damping controllers. The ordinal optimization based genetic algorithm has more stable performance than conventional genetic algorithm, and is proved to be a promising method for controller parameters optimal coordination of multi-infeed AC/DC power systems.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2006年第13期7-13,共7页
Proceedings of the CSEE
基金
国家自然科学基金重点项目(50337010)。~~
关键词
多馈入直流输电
电力系统稳定
模糊控制
遗传算法
序优化
multi-infeed HVDC transmission
power system stability
fuzzy control
genetic algorithm
ordinal optimization
