A Scheme of Full DC Power Convergence for Offshore Wind Farms

doi:10.11930/j.issn.1004-9649.2016.03.188.05

Abstract

Abstract: HVDC is the preferred transmission mode for offshore wind farms. All DC electric energy convergence without offshore substation is one of developing trend for topology design of offshore wind farms. Based on DC series-parallel topology structure, a DC Hybrid Matrix(DCHM) topology is proposed. The proposed structure has normally open power electronic switch between adjacent units in different branches. During unit downtime due to failure or other factors, the switch can be closed and loads can be transferred to adjacent unit in order to reduce voltage overload. An optimized wind farm layout design is also proposed based on DCHM structure. The simulation results verify the validity of proposed structure. This scheme can also reduce equipment cost and improve electricity generation efficiency.

Key words: wind farms, DC series-parallel, DCHM, overvoltage and overcurrent, layout design

CLC Number:

TM721.1

SUN Guanqun, CAI Hui, CHEN Weimin. A Scheme of Full DC Power Convergence for Offshore Wind Farms[J]. Electric Power, 2016, 49(3): 188-192.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2016.03.188.05

https://www.electricpower.com.cn/EN/Y2016/V49/I3/188

References

[1] ARRILLAGE J，LIU Y H，WATSON N R. 灵活电力传输-HVDC的选择[M]. 林海雪，汤广福，贺之渊，译. 北京：中国电力出版社，2011：236-266.
[2] 汤广福. 基于电压源换流器的高压直流输电技术[M]. 北京：中国电力出版社，2010：1-216，299-331.
[3] 汤广福，贺之渊，庞辉. 柔性直流输电工程技术研究、应用及发展[J]. 电力系统自动化，2013,37（15）：3-14.
TANG Guangfu, HE Zhiyuan, PANG Hui. Research application and development of VSC-HVDC engineering technology[J]. Automation of Electric Power Systems, 2013, 37(15): 3-14.
[4] 王志新. 海上风力发电技术[M]. 北京：机械工业出版社，2013：105-184.
[5] 汤广福，罗湘，魏晓光. 多端直流输电与直流电网技术[J]. 中国电机工程学报，2013,33（10）：8-17.
TANG Guangfu, LUO Xiang, WEI Xiaoguang. Multi-terminal HVDC and DC-grid technology[J]. Proceedings of the CSEE, 2013, 33(10): 8-17.
[6] 王志新，吴杰，徐烈，等. 大型海上风电场并网VSC-HVDC变流器关键技术[J]. 中国电机工程学报，２０１３，３３（１９）：１４－２６．
WANG Zhixin, WU Jie, XU Lie, et al. Key technologies of large offshore wind farm VSC-HVDC converters for grid integration [J]. Proceedings of the CSEE, 2013, 33(19): 14-26.
[7] 王伟，石新春，付超，等. 海上多端直流输电系统协调控制研究[J]. 电网技术，２０１４，３８（１）：８－１５．
WANG Wei, SHI Xinchun, FU Chao, et al. Coordinated control of multi-terminal HVDC transmission system for offshore wind farms [J]. Power System Technology, 2014, 38(1): 8-15.
[8] 董存，裴哲义，黄越辉. 中德风电并网政策和技术标准的比较研究[J]. 中国电力，２０１３，４６（５）：８３－８９．
DONG Cun, PEI Zheyi, HUANG Yuehui. Comparative study of integrating technique for wind power between China and Germany[J]. Electric Power, 2013, 46(5): 83-89.
[9] PARASTAR A, SEOK J K. High-power-density power conversion systems for HVDC-connected offshore wind farms [J].Journal of Power Electronics, 2013, 13(5): 737-745.
[10] HOLTSMARK N, BAHIRAT H J, MOLINAS M, et al. An all-DC offshore wind farm with series-connected turbines: An alternative to the classical parallel AC model [J]. IEEE Trans Ind. Electron, 2013, 60(6): 2420-2428.
[11] NGUYEN Thanh Hai, LEE Dong-Choon, KIM Chan-Ki. A series- connected topology of a diode rectifier and a voltage-source converter for an HVDC transmission system [J]. IEEE Transactions on Power Electronics, 2014, 29(4): 1579-1584.
[12] VEILLEUX E, LEHN P W. Interconnection of direct-drive wind turbines using a series-connected DC grid[J]. IEEE Transactions on Sustainable Energy, 2014, 5(1): 139-147.
[13] 李响，韩民晓.海上风电串联多端VSC-HVDC协调控制策略[J].电工技术学报，２０１３，２８（５）：４２－４８，５７．
LI Xiang, HAN Minxiao. A coordinated control strategy of series multi-terminal VSC-HVDC for offshore wind farm [J]. Transactions of China Electrotechnical Society, 2013, 28(5): 42-48, 57.
[14] 何大清. 基于直流串联的海上风电场及其控制[D]. 上海：上海交通大学，2013.
HE Daqing. Series-connected DC based offshore wind farm and its control [D]. Shanghai: Shanghai Jiao Tong University, 2013.
[15] NIERADZINSKA K, NAMBO J C, ADAM G P, et al. North sea offshore modelling schemes with VSC-HVDC technology: Control and dynamic performance assessment [J]. Energy Procedia, 2013, 35(1): 91-101.
[16] 夏明华. 高压大容量IGBT测试技术及测试平台的研究[D]. 杭州：浙江大学，2014.