采用双馈机组的风电场无功功率控制技术

通过对双馈异步发电机的无功功率极限和定子输出无功功率对电机损耗影响的详细分析，提出了双馈机组无功功率参考值的2种确定方法。在此基础上，采用发电机并联的方式，构建了精确的风电场模型，并给出了风电场的无功功率分配方案。最后对一台1.5 MW的商用双馈机组和由4台机组组成的6MW风电场进行了仿真分析。仿真结果验证了理论分析和所提策略的正确性和有效性。

Reactive Power Control of Wind Farm Adopting Doubly-Fed Induction Generators

By means of detailed analysis on both reactive power limit of doubly-fed induction generator (DFIG) and impact of stator output reactive power on generator loss, two methods to determine reactive power reference value of DFIG set are proposed. On this basis, adopting parallel connection of generator sets a precise wind farm model is constructed and reactive power distribution scheme of this wind farm is given. Simulative analysis on a wind farm with capacity of 6 MW which consists of a commercial 1.5 MW DFIG set and four other DFIG sets is carried out and the simulation results show that the proposed strategies are correct and effective.