Improved Power Flow Algorithm Incorporating Multi-Terminal VSC-HVDC

Abstract:

Voltage Source Converter (VSC) based High Voltage Direct Current (HVDC) technology is a newly deve- loped power transmission technology. The basic principle and structure of multi-terminal VSC-HVDC is introduced and its steady-state mathematical model is set up. An improved power flow algorithm is deduced, which not only decouple the relationship between AC and DC systems’ variables in the strict mathematical form, but also can be integrated with the conventional power flow program and exhibit good accuracy and convergence characteristics compared to conventional technique. A numerical example of IEEE 14-bus test system with a 3-terminal VSC-HVDC network is given. The results show that the proposed steady-state model of multi-terminal VSC-HVDC and corresponding power flow algorithm are correct and effective.

• Periodical: Advanced Materials Research (Volumes 383-390)
• Pages: 2188-2194
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.383-390.2188
• Online since: November 2011
• Authors: Fang Ye, Zhi Nong Wei, Guo Qiang Sun
• Keywords: Direct Current Transmission, Power Flow Algorithm, Voltage Source Converter, VSC-HVDC

References

[1] N.G. Hingorani, High-voltage DC transmission: a power electronics workhorse, IEEE Spectrum, vol. 33, no. 4, pp.63-72, April, (1996).

DOI: 10.1109/6.486634

[2] V.G. Agelidis, G.D. Demetriades, N. Flourentzou, Recent advances in high-voltage direct-current power transmission systems, IEEE International Conference on Industrial Technology, Mumbai, India, pp.206-213, December, (2006).

DOI: 10.1109/icit.2006.372391

[3] F. Schettler, H. Huang, N. Christl, HVDC transmission systems using voltage sourced converters design and applications, IEEE PES Summer Meeting, Seattle, USA, vol. 2, pp.715-720, July, 2000.

DOI: 10.1109/pess.2000.867439

[4] N. Flourentzou, V.G. Agelidis, G.D. Demetriades, VSC-based HVDC power transmission systems: an overview, IEEE Trans on Power Electronics, vol. 24, no. 3, pp.592-602, March, (2009).

DOI: 10.1109/tpel.2008.2008441

[5] Hairong Chen, Fan Zhang, Yong Chang, Improvement of power quality by VSC based multi-terminal HVDC, Power Engineering Society General Meeting, 2006, IEEE, Montreal, Canada, pp.1-6, June, (2006).

DOI: 10.1109/pes.2006.1709257

[6] Lianxiang Tang, Boon-Teck Ooi, Elimination of 'harmonic transfer through converters' in VSC-based multiterminal DC systems by AC/DC decoupling, IEEE Trans on Power Delivery, vol. 23, no. 1, pp.402-409, January, (2008).

DOI: 10.1109/tpwrd.2007.905556

[7] Tao Ding, Chengxue Zhang, Uninterrupted power supply in VSC-MTDC, Transmission and Distribution Conference and Exposition, 2010, IEEE PES, New Orleans, LA, USA, pp.1-6, April, (2010).

DOI: 10.1109/tdc.2010.5484489

[8] Li Gengyin, Zhou Ming, He Jie, et al, Power flow calculation of power systems incorporating VSC-HVDC, International Conference on Power System Technology, 2004, Singapore, vol. 2, pp.1562-1566, November, (2004).

DOI: 10.1109/icpst.2004.1460252

[9] Zheng Chao, Zhou Xiaoxin, Li Ruomei, et al, Study on the steady characteristic and algorithm of power flow for VSC-HVDC, Proceedings of the CSEE, vol. 25, no. 6, pp.1-5, March, (2005).

[10] Zheng Chao, Sheng Canhui, Uniform iterative power flow algorithm for systems equipped with VSC-HVDCs, Electric Power, vol. 40, no. 7, pp.65-69, July, (2007).

[11] Xiaoping Zhang, Multiterminal voltage-sourced converter-based HVDC models for power flow analysis, IEEE Trans on Power Systems, vol. 19, no. 4, pp.1877-1884, November, 2004.

DOI: 10.1109/tpwrs.2004.836250

[12] Chen Qian, Tang Guoqing, Wang Xun, AC-DC power flow algorithm for multi-terminal VSC-HVDC systems, Electric Power Automation Equipment, vol. 25, no. 6, pp.1-6, June, (2005).