建筑“光储直柔”配电系统设计要点浅析

Analysis of the Key Points in the Design of the“Photovoltaics,Energy Storage,Direct Current and Flexibility”Distribution System in Buildings

在“双碳”目标的发展背景下,为了适应未来可再生能源占比越来越高的能源结构,“光储直柔”建筑电气系统这项新兴技术成为研究的热点。建筑“光储直柔”配电系统利用光伏发电、电化学储能等分布式能源,结合建筑内直流负荷构建了一个直流微网。该微网设置了具备合理调度策略的能量管理系统,使其成为了一个既可以独立运行,又可以响应电网侧调度需求的“柔性”负载。分析了光伏组件的选型与组串设计、蓄电池的选型与储能容量配置、直流微电网的构建与系统柔性能量管理系统设计等技术要点,为该项技术的深入研究提供参考。

Under the development background of“carbon peaking and carbon neutrality”,in order to adapt to the energy structure with an increasing proportion of renewable energy in the future,the emerging technology of“photovoltaics,energy storage,direct current and flexibility(PEDF)”building electrical system has become a research hotspot.The building’s PEDF power distribution system uses distributed energy resources such as photovoltaic power generation and electrochemical energy storage,combined with DC load in the building to build a DC microgrid.The microgrid has an energy management system with a reasonable dispatch strategy,making it a“flexible”load that can not only operate independently but also respond to grid-side dispatch needs.This paper analyzes the selection and string design of photovoltaic modules,the selection of batteries and the configuration of energy storage capacity,the construction of DC microgrid and the design of system flexible energy management system,in order to provide a reference for the in-depth research of this technology.