Design of UPFC Controller Using Bilinear Equation for Improving Power System Stability
Subject Areas : electrical and computer engineeringM. Nayeripour 1 * , A. Yazdian Varjani 2 , M. Mohamadian 3
1 -
2 - Tarbiat Modares University
3 - Tarbiat Modares University
Keywords: Unified power flow controller (UPFC)series convertershunt converter,
Abstract :
In this paper the model of UPFC is represented by a bilinear equation. Then with the second method of Lyapunov, the input of converter is derived such that the derivative of energy function is negative. The design of controller is carried out with two methods. In the first method, the controller is linearized at operating point. In the second method, the nonlinear method is used in the series converter and the PI controller is used in the shunt converter. Reduction of first swing peak after fault clearing is the main advantage of designed controller with respect of PI controller.
[1] E. V. Larsen, J. J. Sanchez-Gasca, and J. H. Chow, "Concepts for design of FACTs controllers to damp power swings," IEEE Trans. Power Systems, vol. 10, no. 2, pp. 948-956, May 1995.
[2] H. Wang, "A unified model for the analysis of facts devicse in damping power system oscillations – part III: unified power flow controller," IEEE Trans. on Power Delivery, vol. 15, no. 3, pp. 978-983, Jul. 2000.
[3] P. K. Dash and S. Mishra, "Damping of multimodal power system oscillations by FACTS devices using non - linear Takagi-Sugeno fuzzy controller," Electrical Power and Energy Systems, vol. 25, no. 6, pp. 481-490, 2003.
[4] R. Mihalic, P. Zunko, and D. Povh, "Improvement of transient stability using unified power flow controller," IEEE Trans. on Power System, vol. 10, no. 2, pp. 948-956, Jan. 1996.
[5] H. Chen, Y. Wang, and R. Zhou, "Analysis of voltage stability enhancement via unified power flow controller," in Proc. of IEEE Int. Conf. on Power System Technology, vol. 1, pp. 403-408, 2000.
[6] H. F. Wang, M. Jazaeri, and Y. J. Cao, "Analysis of control conflict between UPFC multiple control functions and their interaction indicator," International J. of Control, Automation, and System, vol. 3, no. 2, pp. 315-321, Jun. 2005.
[7] H. F. Wang, "Interaction and multivariable design of multiple control function of a unified power flow controller," Electrical Power and Energy Systems, vol. 24, no. 7, pp 591-600, 2002.
[8] E. Golipour and S. Saadate, "Improving of transient stability of power systems using UPFC," IEEE Trans. on Power Delivery, vol. 20, no. 2, pp. 1677-1681, Apr. 2005.
[9] K. R. Padiyar and H. V. Saikumar, "Coordinated design and performance evaluation of UPFC supplementary modulation controllers," Int. J. of Electrical Power & Energy Systems, vol. 27, no. 2, pp. 101-111, 2005.
[10] B. Lu and B. T. Ooi, "Unified power flow controller (UPFC) under nonlinear control," in Proc. Power Conversion Conference, vol. 3, pp. 1118-1123, Osaka, Japan, 2002.
[11] T. T. Ma and K. L. Lo, "Nonlinear power system damping control strategies for the unified power flow controller (UPFC)," in Proc. Int. Cong. on Power System Technology, vol. 2, pp. 673-678, Perth, Australia, Dec. 2000.
[12] H. Fujita, Y. Watanabe, and H. Akagi, "Control and analysis of a unified power flow controller," in IEEE Trans. Power Electronics, vol. 14, no. 6, pp. 1021 - 1027, Nov. 1998.
[13] A. Nabavi - Niaki and M. R. Iravani, "Steady - state and dynamic model of unified power flow controller (UPFC) for power system studies," IEEE Trans. on Power System, vol. 11, no. 4, pp. 1937-1943, Nov. 1996.
[14] I. Papic, P. Zunko, D. Povh, and M. Weinhold, "Basic control of unifield power flow controller," IEEE Trans. on Power System, vol. 12, no. 4, pp. 1734-1739, Nov. 1997.