摘要
本文主要研究了直流供配电在清洁能源供电系统中的应用.通过合理配置母线的电压等级和主接线结构,减少电压转换次数,以降低系统的能量损耗;采用电力电子和自动控制技术研制的直流插座避免在负载通断过程中产生危害电弧;通过多级代理的方式进行能源调度与管理,提高对能源的利用效率.实际运行结果表明,采用350,220和24V三级直流母线配电系统可满足直流用电设备对输入电压范围的要求.系统的运行数据及时有效地传送到调度中心,为系统分析提供了必要的基础数据.通过对无关负载的开关时间进行调节,使直流供配电系统的能源利用效率相对于交流微电网提高了20%.
An application of direct current power supply in clean energy system is introduced in this paper.To reduce voltage converter and system energy waste,reasonable voltage grades and the structure of direct current bus are selected by analyzing the character of load.In order to avoid harmonic arc when load is connected or disconnected,direct current outlet by power electronics and automation technology are used.Energy using efficiency is improved by multi-agent energy management.There are 350V,220Vand 24V voltage grades in the direct current power supply system,which can meet the requirement of input voltage range.These data are sent to the control center,which is the base for system analysis.The direct current power supply system efficiency increased 20% more than alternating current power supply system by adjusting the switch time of independent load.
出处
《材料研究与应用》
CAS
2014年第2期129-133,共5页
Materials Research and Application
关键词
直流微电网
直流母线
能源管理系统
光伏电池
direct current microgrids
direct current bus
energy management system
photovoltaic cell
