风电场无功电源的优化配置方法

Optimal allocation of reactive power source for wind farms

针对风电场实际运行情况,提出了有功损耗/无功灵敏度法来确定无功补偿点的方法。该方法是通过选择灵敏系数大的节点作为无功补偿节点,最大程度地降低风电场有功损耗。首先由Greedy算法得到问题的初始解,然后通过迭代求解,使得有功损耗最低。最后在一实际风电场上对该方法进行了验证,结果表明该方法可行、有效。

Based on wind farm real operation situation, a novel method using sensitivity analysis for reactive compensation allocations is proposed. In this paper, the sensitivity coefficient is defined as partial derivative of active power losses/reactive power. The nodes which have higher sensitivity coefficient are selected for install capacitors or SVC to reduce the active power losses to the largest extent. The primary solution of the problem is obtained by Greedy algorithm, and then an optimized solution is achieved by iterative solving algorithm. At last, the proposed method is tested in an actual wind farms in Inner Mongolia, computational results show that the proposed method is feasible and effective.