摘要
发展高压直流电网是解决电能大容量远距离传输及大规模可再生能源汇集的有效手段,高压大容量DC/DC变换器是实现不同电压等级的直流电网线路之间互联的关键设备,也是制约直流电网推广的主要技术瓶颈之一。然而已发表的研究工作主要集中于DC/DC变换器在中低压小功率应用,其在高压大容量场合的应用研究较少。为此,首先分析了高压直流电网对大容量DC/DC变换器的技术需求,然后系统回顾了高压大容量高增益DC/DC变换器拓扑的国内外研究现状,并总结了各类DC/DC变换器的特点及其在未来高压直流电网中的应用前景。在此基础上指出了高压直流电网用的大容量DC/DC变换器亟待研究的关键问题。所述内容为未来高压直流电网技术的研究和工程化应用提供了一定的技术参考。
1 Development of HVDC grid is an effective technical solution to implement long-distance power transmission and large-scale renewable energy integration. As key equipment for interconnection between dc power lines with different voltage levels, HV high power DC/DC converter is a bottleneck restricting future HVDC grid promotion. Reported studies of DC/DC converter are mostly focused on LV low-power applications. The paper firstly addresses technical requirements of DC/DC converters in HVDC grid application. Then a survey of state-of-the-art topologies of HV high gain DC/DC converters is presented. Characteristics and application prospect of abovementioned DC/DC converters in HVDC grid are also summarized in detail. Key issues of high power DC/DC converters to be solved urgently are also pointed for HVDC grid application. Conclusions will provide essential theoretical and practical basis for industry application of future HVDC grid.
出处
《电网技术》
EI
CSCD
北大核心
2016年第3期670-677,共8页
Power System Technology
基金
中央高校基本科研业务费人才基金项目(2014RC013)
国家自然科学基金项目(51577010)~~
