摘要
由于风速的波动性,风电场需要找出一种控制方法以稳定其有功功率输出。在分析了现行的控制策略对风电场有功波动的抑制能力的基础上,根据双馈风电机组的运行特性,提出主动控制风机转子转速和桨距角的方式进行有功功率分配,进而达到平稳风电场有功出力的目的。控制策略以优化整个风电场的转子中储存的总动能的方法提高风电场有功功率的输出稳定性,并利用粒子群算法求解该优化问题。通过仿真,验证了该有功功率分配策略可以平抑风电场有功功率波动,提高风电场的有功输出稳定性。
It is necessary for a wind farm to find a control method to steady its active power output, due to the fluctuation of wind speed. We make an analysis of the current control strategies for wind farm active power restraint of fluctuation. Based on operating characteristics of DFIG, we propose a method of making active control of rotor speed and pitch angle, to distribute active power to each wind turbine, and steady wind farm active power output. This control strategy optimizes the sum of kinetic energy stored in rotors of the entire wind farm in order to improve the stability of wind farm active power output, and uses PSO to solve this optimization problem. Simulation result demonstrates that this active power distribution strategy can restrain the fluctuation of wind farm active power and improve its active power output stability.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2012年第17期127-132,共6页
Power System Protection and Control
基金
国家'111'计划项目(B08036)资助
输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512710101)
