The distributed photovoltaic access produces more complicated electric energy flow in low-voltage distribution transformer supply zone,which easily lead to the deviation between the calculation results of line loss and the actual situation.Accordingly,this paper proposes a line loss calculation method,that is,introducing the load unbalance degree in distribution transformer supply zone,evaluating the three-phase load distribution uniformity,and calculating the line loss value in low-voltage distribution transformer supply zone;determining the correction factor of line loss,and correcting the theoretical line loss value.The experimental results show that the deviation between the calculated line loss and the actual line loss of low-voltage distribution transformer supply zone with distributed photovoltaic access is small by using the proposed method,which can accurately calculate the line loss of low-voltage distribution transformer supply zone,so as to better evaluate the line loss of such zone.
关键词
接入分布式光伏/低压配电台区/线损计算/不平衡度
Key words
distributed photovoltaic access/low-voltage distribution transformer supply zone/line loss calculation/unbalance degree
维普
万方数据