摘要
光伏建筑采用低压直流配电系统是交直流微电网在建筑中的典型应用方式,可以提高建筑能效、建立建筑与电网友好型供用电关系等。为了研究和推广光伏建筑一体化及低压直流配电技术,建设了采用低压直流配电系统的光伏建筑项目。简要介绍了项目情况,分析建筑光伏系统发电特点,对低压直流配电系统网络结构、接地形式、故障保护方式和直流负荷进行了研究。研究了建筑能量管理系统运行模式。最后提出了一些需要进行研究的问题。为光伏建筑低压直流配电应用、推广提供了建议和经验。
The use of low-voltage DC distribution system in photovoltaic buildings is a typical application of AC and DC micro grid.It can improve building energy efficiency,establish a friendly power supply and consumption relationship between building and power grid.Photovoltaic building project with low-voltage DC power distribution system has been built for research and promotion.The project is introduced briefly with analysis of building photovoltaic system power generation characteristics.The network structure,grounding mode,fault protection mode and DC load of low-voltage DC distribution system are studied,as well as the operation mode of building energy management system.Some questions that need to be further studied are raised,providing suggestions and experience for the application and promotion of low-voltage DC power distribution in photovoltaic buildings.
作者
房建军
FANG Jian-jun(China Energy Investment Corporation Center for Green Energy and Architecture,Beijing 102211,China;National Institute of Clean-and-Low-Carbon Energy,Beijing 102211,China)
出处
《建筑节能》
CAS
2020年第11期111-115,共5页
BUILDING ENERGY EFFICIENCY
基金
住房和城乡建设部科技计划资助项目:CIGS太阳能薄膜发电技术在光伏建筑一体化中的应用研究(2017-K1-027)
关键词
直流微电网
光伏建筑
低压直流配电
电压等级
主动保护
直流负荷
DC micro grid
photovoltaic building
low-voltage DC distribution
voltage grade
active protection
DC-load
