摘要
针对静止同步补偿器STATCOM的双闭环控制系统设计了分数阶PI^2控制方案,以加快系统响应性能和提高系统鲁棒性。采用遗传算法对分数阶PI。控制器参数进行优化整定,解决了分数阶PI^2控制器参数整定困难的问题,将该种控制方案应用于基于STATCOM的风电场无功补偿电压控制中,以改善风电场电压稳定性。仿真结果表明,STATCOM能够有效地为系统提供无功支撑,抑制由于风速的随机性和波动性导致的风电场电压波动,提高了风电场的安全稳定运行能力,STATCOM控制系统控制性能得到有效提高。
In order to accelerate the dynamic response and improve the robustness of the system, a novel control method of applying fractional-order PI^2 controller for double-loop control of static synchronous compensator (STATCOM) is proposed. The genetic algorithm is applied to optimize and set the parameters of fractional-order PI^2D^u controller, sovling the difficulty in parameter setting. This control scheme is applied in the reactive power compensation and voltage control of the wind farm based on STATCOM. According to the simulation results, it can be concluded that the STATCOM effectively provides reactive power to the wind farm. The voltage stability is improved in case of the randomicity and fluctuation of wind speed. The security and stability of the wind farm are improved. And the control performance of STATCOM is effectively improved.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2012年第16期54-58,64,共6页
Power System Protection and Control
关键词
分数阶控制器
风电场
静止同步补偿器
遗传算法
fractional-order controller
wind farm
static synchronous compensator
genetic algorithm