含分布式电源的配网网损分摊方法及其场景适用性研究

Loss allocation method of distribution network with distributed generation and its scene applicability

目前网损分摊方法的研究主要集中于110 kV及以上电压等级的输电网络,难以直接应用于分布式电源接入配网的情况,也未对分布式电源造成的配网运行场景变化进行探讨。为此,提出一种含分布式电源的配网网损分摊方法,并对其场景适用性进行分析。首先,将分布式电源的运行场景依据其出力情况分为"不发电"、"本地消纳"和"余量上网",并对3种运行场景的网损分摊必要性和分摊特点进行研究。然后,综合对比分析传统网损分摊方法在含分布式电源的配网中的适用性,并在此基础上设计一种适用于含分布式电源的配网网损分摊方法,该方法考虑了2种常见的计算分支,并从原理上对2个计算分支的场景适用性进行详细研究。最后,以IEEE 33节点配电系统为例,对分布式电源接入配网进行网损分摊计算,验证了所提方法的实用性。

Since the current researches of loss allocation methods are mainly focused on the transmission network of 110 kV and above voltage level, they are hardly applied to the distribution network with DG（ Distributed Generation） directly, and the researches haven＇t discussed the variation of operation conditions of distribution network caused by DG, a loss allocation method of distribution network with DG is proposed and its scene applicability is analyzed. Firstly, the operation conditions of DG are classified into no power,local consumption and power supply to grid, and their necessity and characteristics of loss allocation are researched. Secondly,the applicability of traditional loss allocation methods in distribution network with DG is comprehensively compared. On this basis, a loss allocation method applicable to distribution network with DG is designed, which considers two common calculation branches. The scene applicability of the two branches is analyzed detailedly in principle. Finally, the IEEE 33-bus distribution network is taken as an example to analyze the loss allocation of distribution network with DG,which verifies the practicability of the proposed method.