【摘要】 针对具有无功调节能力的双馈感应发电机(double-fed induction generator,DFIG)组成的风电场,提出了一种基于同调分群的无功协调控制策略。该策略充分考虑风电场内风电机组的差异性与同调性,在对风电场进行同调机群划分后,对不同特性的机群分别采用不同的无功控制策略,并采用一种风电场稳定系数指标来综合评价电网电压稳定和无功裕度。仿真算例结果表明,所提出的协调控制策略能有效支持电网电压,还具有相对较大的无功裕度来满足电网无功需求。更多还原

【Abstract】 For the wind farm composed of double-fed induction generators(DFIG) with reactive power regulation capability a coherent clustering based coordinated reactive power control strategy is proposed. In the proposed control strategy the otherness and coherence of wind power generating units are adequately considered, and after the division of coherent clustering of generating units in the wind farm different reactive power control strategy is applied to unit clustering with different characteristics and a wind farm stability coefficient is adopted to synthetically evaluate the voltage stability and reactive power margin of power grid. Taking a wind farm composed of 36 DFIG as the case, simulation results show that the proposed control strategy can effectively support grid voltage and there exists a relatively large reactive power margin to meet the reactive power requirement of power grid.更多还原