双馈风电场新型无功优化分配策略研究  

AN OPTIMAL REACTIVE POWER DISPATCH STRATEGY FOR INTERIOR-POINT METHOD BASED WIND FARMS

作　　者：李丽霞[1,2] 姚兴佳[1] 王晓东[1] 刘颖明[1] 

机构地区：[1]沈阳工业大学风能技术研究所,沈阳110023 [2]沈阳工程学院自动化学院,沈阳110136

出　　处：《太阳能学报》2017年第5期1397-1404,共8页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51677121);辽宁省教育厅项目(L2015369)

摘　　要：提出一种新型的双馈风电场无功优化分配策略,以降低风电场整体损耗为目标,不仅考虑集电线路和风力机变压器的损耗,还考虑风力机内能量转换系统的损耗。同时,在进行无功优化分配时综合考虑风力机内无功分配方式对风力机能量转换系统损耗的影响,提出一种新的风力机内无功控制方式。该文优化问题由内点法求解,包括风力机无功功率极限、母线电压、相角以及潮流平衡等约束条件。通过算例对所提出的控制策略进行仿真计算和分析,结果验证了所提无功优化分配策略的有效性,并分析得出使风电场损耗最小化的无功分配原理。A new reactive power dispatch strategy of doubly fed induction generator （DFIG） based wind farms in order to minimize the total loss of wind farms was proposed. And the influence of reactive power dispatch methods inside a wind turbine to the loss of the energy conversion system, and proposes a new wind turbine reactive power control method were also considered. The optimization problems are constrained by reactive power limit of wind turbines, voltage and angle limit of buses, and the balance of power flows. Interior-point method is used to solve these optimization problems. Based on the explicitly designed study cases, the proposed method is simulated. The results showed the effectiveness of the method. After the analysis of the results, the pattern of the optimal reactive power dispatch for loss minimization is discovered.

关 键 词：风电场 双馈发电机 无功优化分配 最小损耗 内点法 

分 类 号：TM761[电气工程—电力系统及自动化]