构建煤矿直流配电网的关键技术及可行性分析

Key technologies and feasibility analysis of coal mine DC power distribution network

直流配电与交流配电相比具有节能、建造及运行成本低、线路损耗小且易于扩展容量等诸多优点,已成为电力电子和电力系统领域的研究热点。但是绝大多数研究集中在基于微网的低压直流配电系统,论文结合煤矿供电网络和用电设备特点,初步提出了煤矿直流配电网络拓扑和针对中高压直流输出的固态变压器拓扑,总结分析了构建煤矿直流配电网涉及的关键技术,并对煤矿实施直流配电网可行性进行了分析和展望。

Compared to AC power distribution,DC power distribution has the advantages of energy saving,low cost in construction and operation,low line loss,ease capacity expansion,and so on,which has become a hot research subject in the field of power electronics and power system.However,most of studies focus on the low voltage DC power distribution system based on micro-grid.Combined with the coal mine power network and electrical equipment characteristics,the coal mine DC distribution network topology and solid state transformer structure for high voltage output were proposed in this paper.In addition,the key technology to build mine DC distribution network was summarized and analyzed,and the feasibility of implementing a DC power distribution network in coal mine was analyzed and overviewed.