风电场无功补偿问题研究

Research on Reactive Power Compensation of Wind Farm

风电场直驱发电机组的同步电机发出有功、无功的同时也吸收无功,进而影响电网电压的稳定性。利用加装动态无功补偿装置,能有效调节并网电压。文章分析了风电场电气系统构成及无功需求,构建风电场稳态数学模型,提出无功补偿容量的算法等,并以具体案例验证该算法的正确性。通过研究发现,所提出的算法能够有效确定无功补偿器风电场补偿量,进而提升风电场电压稳定性。

The synchronous motor of a direct-drive generator set in a wind farm generates active and reactive power while also absorbing reactive power,which affects the stability of the grid voltage.The installation of dynamic reactive power compensation devices can effectively regulate the grid-connected voltage.The composition and reactive power demand of the wind farm’s electrical system are analyzed,the steady-state mathematical model of the wind farm is constructed,and the algorithm of reactive power compensation capacity is proposed,and the correctness of the algorithm is verified with a specific case.Through research,it is found that the proposed algorithm can effectively determine the compensation amount of the reactive power compensator in the wind farm,thereby improving the voltage stability of the wind farm.