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Optimal Control Strategy of turbine Governor Parameters Based on Improved Beetle Antennae Search Algorithm

TEHNICKI VJESNIK-TECHNICAL GAZETTE 2021年第4期28卷 1082-1090页

作者： Kong, Fannie Li, Jinzhao Yang, Daliang Guangxi Univ Sch Elect Engn Univ Guangxi Univ 100 Daxuedong Rd Nanning 530004 Guangxi Peoples R China

Aiming at the occurrence of long-term and ultra-low frequency oscillations in the hydropower network system, this paper derives the generalized turbine transfer function speed control system model including the flow factor T-pq based on the generalized turbine model, and analyzes the influence of T-pq and PID parameters on the ultra-low frequency damping of the hydraulic turbine governing system. In order to better suppress the ultra-low frequency oscillation caused by improper PID parameter settings, a comprehensive optimization objective function reflecting damping and turbine speed deviation index (ITAE) in ultra-low frequency band is established. Based on the fast and efficient optimization strategy of Beetle Antennae Search, an improved beetle antennae particle swarm optimization is constructed. In single-machine and multi-machine systems, the improved algorithm is compared with different optimization algorithms. The simulation results show that the improved algorithm can overcome the slow convergence speed and easily fall into local optimization problem, effectively improve the damping level of hydraulic turbine governing system in ultra-low frequency, and is more effective and superior than other optimization algorithms. It provides a new way of thinking and technical means to suppress the ultra-low frequency oscillation by optimizing the parameters of the speed control system.

关键词： generalized hydro-turbine transfer function model hydraulic turbine governing system improved beetle antennae particle swarm optimization algorithm PID parameter optimization ultra-low frequency oscillation

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