分布式光伏并网对10 kV城市配电网线损的影响分析

Analysis on the Influence of Distributed Photovoltaic Grid Connection on the Line Loss of 10 kV Urban Distribution Network

针对目前含分布式光伏并网的10 kV城市配电网的线损计算分析需求,首先提出了一种考虑变压器损耗的线损计算模型,然后通过引入补偿改进算法,改进了前推回代法,设计了适合含分布式光伏的配电网线损计算方法,根据实际馈线归纳了3种10 kV城市配电网馈线的典型模型,最后通过多种设计场景,计算并分析了分布式光伏并网对10 kV城市配电网线损的影响,为下阶段配电网分布式光伏渗透率进一步提高提供了指导方法。

In response to the current line loss calculation requirements of the current 10 kV urban distribution network with distributed photovoltaic grid-connected,a line loss calculation model that considers the transformer loss is proposed.Then,by introducing the improved compensation algorithm,the forward push back method is improved,and the line loss calculation method suitable for distribution network with distributed photovoltaic is designed.According to the actual feeders,three typical models of feeders in 10 kV urban distribution network are summarized.Finally,through a variety of design scenarios,the impact of distributed photovoltaic grid connection on the line loss of 10 kV urban distribution network is calculated and analyzed,which provides a guiding method for further improving the distributed photovoltaic penetration of distribution network in the next stage.