摘要
具有本地负载无功补偿功能的户用式光伏并网系统对改善配电网系统供电质量具有重要意义。提出了基于函数变换和低通滤波器相结合的有功电流分量和无功电流分量的提取技术,通过相应的电流分量闭环控制来实现有功能量的传递和单相系统本地负载无功功率补偿。该方法能够快速有效地进行无功补偿,实现系统的单位功率因数并网运行。仿真和实验结果验证了所设计的控制方法的有效性与合理性。
The residential grid-connected photovohaic（PV） generation system with reactive power compensation for local loads can improve the power quality.The active and reactive power current components were obtained by function transformation and low-pass filters respectively. The active power flow from the front-stage to end-stage and reactive power compensation for single- phase local loads were realized by the corresponding closed- loop current component control. The control strategy can compensate the reactive power of loads quickly and achieve the good grid- connected performance with unity power factor. Simulation and experimental results verify that the proposed control method is effective and feasible.
出处
《电气传动》
北大核心
2013年第4期53-56,共4页
Electric Drive
基金
陕西省教育厅自然科学基金(12JK567)
陕西省重点学科建设专项基金
关键词
光伏并网发电
无功补偿
函数变换
直流分量
PV grid-connected generation
reactive compensation
function transformation
DC-component
