直流微网多电压等级划分探究  

Research on Multi Voltage Classification of DC Microgrid

作　　者：鲍韦晴 郭权利[1] BAO Weiqing;GUO Quanli(Shenyang Institute of Engineering,Shenyang 110000,China)

机构地区：[1]沈阳工程学院,辽宁沈阳110000

出　　处：《通信电源技术》2021年第12期42-44,共3页Telecom Power Technology

摘　　要：智能微电网是未来电网发展的重要方向,直流微电网的发展则是其中的重要环节。直流微网如何确定电压等级,是直流微网发展的前提,关乎到直流配网系统的结构布局、直流设备的设计与制造标准以及直流电网的管理与运行等诸多方面。为了更好地发展直流微网,提高直流输电技术,有利于直流微网的长期发展,提出将直流微网电压等级划分标准化的思想。国内特高压直流输电技术已基本成熟,但家庭直流微网技术研究还存在空白。以传统交流配网的电压等级划分原则作为基础,考虑直流输电的具体特点,与直流电网输电的经济性作为重要依据,得到直流电压等级划分的基本原则。详细论述直流微网电压等级划分依据,并据此得到直流微网电压等级标准,确定各直流电压等级的适用情况与各电压等级的经济性。研究成果可为家庭或农村直流配电网电压等级选择和直流配电系统规划建设提供参考。The DC microgrid is an important part of the future smart grid.Voltage level is the basis of many research contents of DC distribution system,which is related to the structure and layout of power grid,the design and manufacture of electrical equipment and facilities,and the operation and management of power system.According to the development of DC transmission technology and its application prospects in the medium and long-term development plan of my country’s power system,the idea of dividing the voltage level standardization for the DC transmission system is proposed.At present,domestic and foreign research on the selection of the voltage level of the DC microgrid for households is not thorough enough.Based on the optimization and selection of the traditional AC distribution network voltage level sequence,this paper analyzes various influencing factors,gives suggestions for formulating voltage levels under consideration of each influencing factor,and introduces the voltage level sequence from an economic perspective.The relationship with cost.The necessity and basis of the DC system division sequence are discussed in detail,the composition of the voltage level sequence is determined on this basis,the economics of each voltage level are compared,and the respective scope of application is obtained.The research results can provide references for the selection of the voltage level of the home or rural DC distribution network and the planning and construction of the DC distribution system.

关 键 词：直流配电网 电压等级 影响因素 评价指标 

分 类 号：TM7[电气工程—电力系统及自动化]