电力系统风电场节点模型研究及潮流计算

Study and load flow calculation of wind farm node model in electric power system

针对风电场节点模型不够完善的问题,在传统RX模型的基础上提出了改进RX模型。将异步风力发电机滑差修正量引入到雅克比矩阵中,使潮流计算的迭代过程仍然保持牛顿-拉夫逊法所具有的平方收敛性;同时,考虑了节点电压对异步风力发电机吸收无功功率的影响。将改进RX模型用于IEEE14节点的测试系统的潮流计算中,对潮流计算结果进行对比分析,表明了改进RX模型的有效性。

Aiming at the incomplete wind farm node model,on the basis of the traditional RX model,this paper puts forwards the improved RX model.The slip correction of asynchronous wind power generator brought into Jacobi matrix not only keeps the quadratic convergence enjoyed by Newton-Raphson method in the iteration process of load flow calculation,but at the same time takes the influence of node voltage on reactive power absorption of wind power generator into consideration as well.The improved RX model is applied to load flow calculation for the IEEE14 node test system and is proved to be effective through the comparative analysis of calculation results.