直流配电技术综述(英文)

A Review of DC Power Distribution Technology

目前电力消费终端中直流负载所占比重正越来越高,采用直流配电可以减少变流环节提高用电效率;此外,相对于交流配电,直流配电网更加易于新能源发电机和储能装置的接入,因此直流配电在解决能源危机中体现着开源可节流的双重作用,并得到越来越多的关注。在参考直流输电、船载直流系统、数据中心直流配电系统、分布式直流供电系统和风场直流汇集系统等研究基础上,概括了直流配电效率、输送容量、拓扑结构、系统稳定性、潮流计算和控制、继电保护和直流变压器等方面的国内外研究现状,并进行了评述。最后指出了直流配电网的几个需要深入研究的基础性问题。

At present the proportion of DC load in end-use electricity consumption becomes increasingly higher, so adopting DC power distribution could reduce the total number of power converters and improve the power consuming efficiency, besides, it is more easily to integrate renewable energy generators and energy storage devices with DC power distribution network than with AC power distribution network, thus in the solution of energy crisis the DC power distribution plays dual roles of increasing income and reducing expenditure, so more and more attentions are paid to it. On the basis of referring to the researches on DC power transmission, shipboard DC power system, data center DC power distribution system, distributed DC power supply system and DC power collection system in wind farms, the research status of efficiency, transmission capacity, topological structure, system stability, power flow calculation, control of DC power distribution as well as the DC transformer and so on are summarized and commented. Finally, some fundamental problems related to DC distribution network to be intensively researched are pointed out.