Dynamic Behavior Study of a VSC-HVDC System with SPWM Command Subjected to an Important Variation of Load

Abstract:

To interconnect sources of production, it is necessary to watch that the technical parameters as tension, frequency and phase shift of the sources of production are equal. In Benin, it is difficult for the company in charge of the production and of the transport of the electricity to interconnect the production coming from Nigeria and that coming from Ghana because all the parameters are not equal. It is thus necessary to find a way to interconnect the sources of productions to satisfy not only the request in electrical energy but also to insure the continuity of the service and the stability of the electricity network [1,2]. In this work, we studied the dynamic behavior of the Voltage Source Converter based High Voltage Direct Current (VSC-HVDC) system subjected to an important variation of load and commanded by the Sine-triangle Pulse Width Modulation ( SPWM) to improve the quality of the electrical energy. We developed thus first of all the electric model of all the constituents of the system. These models allowed designing easily the control systems of the static converters VSC (the rectifier and the inverter). The simulation of the inverter showed that the rate of distortion of harmonious varied considerably according to the load for important variations of load. The solution brought by this work is the elaboration of a control system to vectorial PWM who improves the rate of distortion of harmonious.

• Periodical: International Journal of Engineering Research in Africa (Volume 33)
• Pages: 76-83
• DOI: https://doi.org/10.4028/www.scientific.net/JERA.33.76
• Online since: November 2017
• Authors: Kokou Thophile Houngan, Agbokpanzo Richard Gilles*, Kizito Codja, Dourodjayé Pierre Aguemon, Christophe Espanet
• Keywords: Command SPWM, Important Variation of Load, Inverter Two Levels, Rate of Harmonic Distortion, Rectifier Three Levels NPC, Vectorial Command PWM, VSC-HVDC

References

[1] W. BREUER, V. HARTMANN, D. POVH, D. RETZMANN, E. TELTSCH, Application of HVDC for large power system interconnections, CIGRÉ, SESSION (2004).

[2] John Graham, Power System HVDC Applications, ABB utilities, (2002).

[3] SIEMENS, High Voltage Direct Current Transmission - Proven Technology for Power Exchange, (2011).

[4] Cuiqing Du, The control of VSC-HVDC and its use for large industrial power systems, Thesis for the degree of licentiate of engineering, Department of Electric Power Engineering Chalmers University of Technology Goteborg, Sweden, (2003).

[5] Seghir Benhalima, La conception, la modélisation et la simulation du système VSC-HVDC Offshore, Thesis for the degree of Master of engineering, University of technology, Quebec, (2012).

[6] Yijing Chen and al, Nonlinear control design for a multi-terminal VSC-HVDC system, HAL Id: hal-00948977, https: /hal. archives-ouvertes. fr/hal-00948977, (2014).

[7] Jianhua Zhang, Li Sheng, Shang Jingfu, Zhao Weiwei and Li Chunye, Multi-target controller of three-level NPC based VSC-HVDC transmission system and Its RTDS simulation, ICSET 2008. IEEE - International, pp.793-797.

DOI: 10.1109/icset.2008.4747116

[8] Xiaoguang Wei, and Tang Guangfu, Analysis and Control VSC-HVDC under Unbalanced AC Conditions, In Power System Technology, 2006. PowerCon 2006. International Conference on (22-26 Oct. 2006). pp.1-5.

DOI: 10.1109/icpst.2006.321815

[9] Michael P. Bahrman and Brian K. Johnson, The ABCs of HVDC transmission technologies, IEEE power & ennergy magasine, (2007).

[10] L. Harnefors, H. -P. Nee, Control of Variable-Speed Drives. Electrical Machines and Power Electronics, Dept. of Electrical Engineering, Royal Institute of Technology, Stockholm, (2000).