摘要
随着可再生能源的发展以及电网规模的迅速扩大,直流输电技术日益为人们所重视。与传统交流输电技术相比,直流侧故障的处理是其发展所面临的难题之一。将分析目前主流的几种换流器拓扑结构的技术特点;并着重从子模块以及换流器层面,对比当前工程应用及学术研究较多的模块化多电平电压源换流器不同拓扑结构对于直流侧故障处理、输出信号、损耗等方面的性能;最后,介绍模块化多电平电压源换流器在相关直流输电工程中的应用。
With the development of renewable energy and the scale of power grid, DC transmission technology is increasingly valued by related people. Comparing with the conventional AC transmission technology, the processing of the DC-side fault is one of the major problems in its development. This paper will analyze the technical characteristics of several current major voltage source converter topologies. And emphatically comparing the performance of different modular multilevel voltage source converter topologies that are widely used in current engineering application and studied in academic research, including the DC-side fault processing, the output signal and the loss is compared from the sub-module and converter level. At last, the application of modular multilevel voltage source converter in HVDC transmission project is introduced.
出处
《智能电网》
2016年第3期263-272,共10页
Smart Grid
关键词
直流输电
直流侧故障
电压源换流器
DC transmission
DC-side fault
voltage source converter
