Abstract：A novel double-infeed HVDC system, combining a conventional high voltage direct current transmission (HVDC) and voltage-source converter based HVDC (VSC-HVDC), is proposed in this paper for supplying an entirely passive AC network. The 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 and dynamic performance of the double-infeed HVDC system, the process of starting HVDC using VSC-HVDC and the dynamic performance of double-infeed HVDC when three-phase to ground fault occurring at HVDC inverter side are investigated. PSCAD/EMTDC Simulation results show that, the proposed double-Infeed HVDC system can supply power to passive network and it also has favorable dynamic and fault-restoration performance.
[1] 徐政. 交直流电力系统的动态行为分析[M]. 北京: 机械工业出版社, 2004. [2] 汤广福, 贺之渊, 滕乐天, 等. 电压源换流器高压直流输电技术最新研究进展[J]. 电网技术, 2008, 32(22): 39-44. [3] 郑超, 周孝信, 李若梅, 等. VSC-HVDC稳态特性与潮流算法的研究[J]. 中国电机工程学报, 2005, 25(6): 1-5. [4] 赵琬君. 高压直流输电工程技术[M]. 北京: 中国电力出版社, 2004. [5] Andersen B R, Xu L, Horton P J, et al. Topologies for VSC transmission [J]. IEEE Power Eng. 2002, 16(3): 142-150. [6] Guanjun Ding, Guangfu Tang, Zhiyuan He, et al. New technologies of voltage source converter (VSC) for HVDC transmission system based on VSC[C]. IEEE Power Energy Society Gerneral Meeting, 2008: 1-8. [7] 汤广福, 贺之渊. 2008年国际大电网会议系列报道—高压直流输电和电力电子技术最新进展[J]. 电力系统自动化, 2008, 32(22):1-7. [8] 赵成勇, 李广凯, 孙营. 双馈入直流输电系统中VSC-HVDC的控制策略研究[J]. 中国电机工程学报, 2008, 28(7): 97-103. [9] Zhuang Y, Menzies R W, Nayak O B, et al. Dynamic performance of a STATCOM at an HVDC inverter feeding a very weak AC system[J]. IEEE Transactions on Power Delivery, 1996, 11(2), 958-964. [10] Nayak B, Gole A M, Chapman D G, et al. Dynamic performance of static and synchronous compensators at an HVDC inverter bus in a very weak ac system[J]. IEEE Transactions on Power System, 1994, 9(3): 1350-1358. [11] Oliveira M De, Poloujadoff M, Du A Le, et al. Therond. Supply of an entirely passive AC system through an HVDC link[J]. Electrics Power Energy Systems, 1994, 16(2): 111-116. [12] Andersen Bjarne R, Xu Lie. Hybrid HVDC system for power transmission to island networks [J]. IEEE Transactions on Power Delivery, 2004, 19(4): 1884-1890. [13] 赵成勇, 李金丰, 李广凯. 基于有功和无功独立调节的VSC-HVDC控制策略[J]. 电力系统自动化, 2005, 29(9): 20-24. [14] 尹明, 李庚银, 牛同义, 等. VSC-HVDC连续时间状态空间模型及其控制策略研究[J]. 中国电机工程学报, 2005, 25(18): 34-39. [15] Szechtman M, Wess T, Thio C V. First benchmark model for HVDC control studies[C]. International Conf. on AC and DC Power Transmission, 1991: 374-378. [16] Prabha Kundur. 电力系统稳定与控制[M]. 北京: 中国电力出版社, 2001.
2012, Vol. 27 
