含分布式电源的低压直流配电网研究综述

Review of DG Integrated Low Voltage DC Distribution Network

在风力发电和光伏发电领域,与交流配电网相比低压直流配电网具有能量变换环节少、系统效率高和控制简单等特点,更有利于分布式直流电源和直流负载的灵活接入。叙述了低压直流配电网的研究现状,分析了直流配电网的特点,探讨了含分布式电源的低压直流配电网的拓扑结构、电压等级选取原则和构建低压直流配电网所面临的问题,最后给出构建含分布式电源的低压直流配电网的建议和解决方案。

The traditional AC distribution network is facing serious challenges while photovoltaic power generation,wind power generation and other distributed generation（ DG） access to the power grid. Compared to ac power,low voltage dc power distribution network has the advantages of less energy conversion processes,high efficiency and easy to control,so it is easy for DC distributed generation and DC load access to the grid. This paper introduces the development process and current research status of low voltage dc distribution network,analysis the advantages of DC power distribution network,discusses the topology of low voltage DC power distribution network with distributed generation,the selection principle of voltage,the potential issues of build low voltage DC power distribution network.Finally,suggestions and implementation scheme of building the DG integrated low voltage dc distribution network are given.