Supply of an Entirely Passive AC Network Through a Double-Infeed HVDC System
Supply of an Entirely Passive AC Network Through a Double-Infeed HVDC System
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DOI：
10.1109/tpel.2010.2050214
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发表时间：
2010-05
影响因子：
6.7
通讯作者：
Chunyi Guo;Chengyong Zhao
中科院分区：
文献类型：
--
作者：
Chunyi Guo;Chengyong Zhao
本文提出了一种双馈入式高压直流输电系统，该系统结合了传统的高压直流输电技术和基于电压源换流器的高压直流输电技术，用于向完全无源的交流电网供电。提出了基于VSC的高压直流起动新概念和详细模型，设计了整个系统的控制策略。为了验证所提出的DI-HVdc系统的稳态，动态和瞬态性能，使用VSC-HVdc和交流故障条件下的HVdc启动过程在PSCAD/EMTDC中进行了仿真。仿真结果表明，在交流故障条件下，VSC-HVdc可以成功启动高压直流，整个系统具有良好的动态和暂态性能。最后，对直喷式高压直流输电的发展前景进行了展望。
A double-infeed HVdc (DI-HVdc) system, combining a conventional HVdc transmission and voltage-source converter-based HVdc (VSC-HVdc) technology, is proposed in this paper for supplying an entirely passive ac network. The new concept and detailed model for starting HVdc using VSC-HVdc is provided and control strategies of the whole system are designed. Aiming to validate the steady state, dynamic and transient performances of the proposed DI-HVdc system, the process of starting HVdc using VSC-HVdc and ac faults conditions are simulated in PSCAD/EMTDC. Simulation results show that HVdc can start successfully using VSC-HVdc and the whole system has favorable dynamic and transient performances under ac faults conditions. Finally, the prospects of DI-HVdc are discussed.