摘要
随着光伏扶贫工程的深入开展,大量分布式光伏接入配电网,配电网由传统的辐射状网络变为有源网络,引起馈线电压分布的变化。通过对分布式光伏T接接入380V/220V低压配电网建模,分析了分布式光伏对馈线电压和线损分布的影响。以光伏扶贫中典型试点为例,分析了分布式光伏的接入容量、接入位置、功率因数对电压和线损分布的影响,提出了分布式光伏T接接入380V/220V低压配电网的建议,为光伏扶贫工程的开展和电网改造提供了理论支持。
With the further development of photovoltaic poverty alleviation project,a large number of distributed photovoltaic access distribution network,distribution network from the traditional radial network to active network,resulting in changes in feed line voltage distribution.Based on the model of 380 V/220 V low distribution network with distributed photovoltaic T-connection,the influence of distributed photovoltaic on the distribution of feeder voltage and line loss is analyzed.Taking a typical pilot project of photovoltaic poverty alleviation as an example,the influence of the access capacity,access location and power factor of distributed photovoltaic on the distribution of voltage and line loss is analyzed,and the suggestion of connecting distributed photovoltaic T-connection to 380 V/220 V low-voltage distribution network is put forward,which provides theoretical support for the development of photovoltaic poverty alleviation project and the transformation of power grid.
作者
耿琦
左杨
王国亮
胡玉生
石智永
GENG Qi;ZUO Yang;WANG Guo-liang;HU Yu-sheng;SHI Zhi-yong(State Grid Zhengzhou Power Supply Company,Zhengzhou 450000 China)
出处
《自动化技术与应用》
2020年第5期105-109,共5页
Techniques of Automation and Applications
基金
国网河南省电力公司科技项目:分布式电源接入电网属地化辅助决策系统的研究与开发(编号521710170005)。
关键词
分布式光伏
低压配电网
电压分布
T接接入
distributed photovoltaic
low voltage distribution network
voltage distribution
T connection
