分布式光伏接入电网对配电网网损的影响研究

Research on the Influence of Distributed Photovoltaic Grid-Connection on Distribution Network Loss

明确分布式光伏接入电网对配电网网络损耗的影响,可以更积极的推进降损节能的实现。研究首先以辐射式配电网为例,理论计算了光伏电源并网前后的配电网网络损耗,然后利用Matlab/Simulink仿真软件,结合IEEE33节点配电系统进行仿真计算,定量分析了光伏电源在不同接入容量、不同并网位置和不同接入方式时配电网网络损耗的变化趋势,并设置三种不同位置特性的光伏并网组合,研究了多个光伏电源并网时对配电网网络损耗的影响规律,得出了相应结论,为实际配电网中分布式光伏的规划建设提供了参考和理论依据。

To clear the impact of distributed photovoltaic grid-connection on distribution network loss could ensure the effect of loss reduction and energy conservation.Firstly the radial distribution network is taken as an example to calculate theoretically the distribution network loss before and after the connection of distributed photovoltaic power to distribution network.Secondly,combined with the 33-bus IEEE distribution system simulation,analyses quantitatively the change trend of distribution network loss under the different access capacity,access position and access mode of distributed photovoltaic power by using the software of Matlab/Simulink,and the research set up three photovoltaic grid-connection combinations based on different location features,the influence rules of multi-photovoltaic power grid-connection on distribution network loss are studied,and the corresponding results are obtained,which provides a reference and theoretical basis for the planning and construction of distributed photovoltaic power in the actual distribution network.