摘要
近年来家庭光伏并网发电逐渐受到了国家的高度重视与政策鼓励。结合日益普遍的光伏单相接入低压配网形式,通过DIg SILENT仿真软件对IEEE33节点测试系统进行仿真试验,研究了光伏单相不同接入相别、接入容量、接入位置对配网网损及三相不平衡的影响规律,并从降低三相电流不平度的角度出发,提出光伏单相接入配网的合理化建议。仿真结果表明,所提建议能够对电流三相不平衡度起到改善的作用,从而缓解因三相电流不平衡所引发的网损问题,为未来大规模光伏接入及电网企业节能降损工作提供参考。
Home photovoltaic grid- connection and generation has been gradually paid highly attention to and obtained policy encouragement in China in recent years.Combining with the photovoltaic single- phase grid- connection to low voltage distribution network which is the increasingly common used grid-connection type,the IEEE33 bus test system is simulated and tested by DIg SILENT simulation software,and influence patterns of different phases,capacities and positions of single-phase photovoltaic grid-connection to the power loss and the three-phase unbalance distribution network are studied.Reasonable suggestions on the photovoltaic single-phase grid-connection to distribution network are proposed from the view of decreasing current three-phase unbalance factor.Simulation results show that proposed suggestions can play the role of improving the current three-phase unbalance factor and thus relieve the power loss problem caused by the unbalance of three-phase current,which can provide reference to the large scale single-phase photovoltaic gridconnection in the futureand to the energy saving and lossreduction work of power grid enterprises.
出处
《广西电力》
2016年第1期11-14,32,共5页
Guangxi Electric Power
关键词
光伏电源
单相接入
三相不平衡度
节能降损
photovoltaic power source
single-phase grid-connection
three-phase unbalance factor
energy saving and lossreduction
