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Fuzzy Logic Control of Static Var Compensator for Power System Damping

Authors: N.Karpagam, D.Devaraj


Static Var Compensator (SVC) is a shunt type FACTS device which is used in power system primarily for the purpose of voltage and reactive power control. In this paper, a fuzzy logic based supplementary controller for Static Var Compensator (SVC) is developed which is used for damping the rotor angle oscillations and to improve the transient stability of the power system. Generator speed and the electrical power are chosen as input signals for the Fuzzy Logic Controller (FLC). The effectiveness and feasibility of the proposed control is demonstrated with Single Machine Infinite Bus (SMIB) system and multimachine system (WSCC System) which show improvement over the use of a fixed parameter controller.

Keywords: Transient Stability, FLC, SVC, SMIB, PIDcontroller

Digital Object Identifier (DOI):

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[1] P.Kundur, Power System Stability and Control, Mc Graw Hill, Newyok, 1994.
[2] T.Athay, R.Podmore and S.Virmani," A Robust control strategy for shunt and series reactive compensators to damp electromechanical oscillations" IEEE Transactions on Power Delivery,vol.16, No.4.pp812- 817,Oct,2001.
[3] M.A.Abido, " Analysis and assessment of STATCOM based damping stabilizers for Power system stability enhancement"Electric Power System Research,73, 177- 185,2005.E.Lerch, D.Povh, "Advanced SVC control for damping powersystem oscillations" IEEE Transactions on Power Systems, vol.16,No.2,May 1991,pp 524 - 535.
[4] E.H.Zhou., "Application of Static Var Compensator to increase Power System Damping", IEEE Transactions on Power Systems,Vol.8, No.2,May 1993.
[5] M.E. Aboul.Ela, A.A.Sallam, J.D.Mc Calley,, "Damping controller design for power system oscillation using global signals, IEEE Transactions on Power systems,vol.11.No.2,1996, pp 767- 773.
[6] Yong Chang, Zhen Xu," A novel SVC supplementary controllers basd on wide area signals,Electric Power Systems Research, 77(1569- 1574) , 2007.
[7] Qun Gu , Anupama Pandey and Shelli K. Starrett, "Fuzzy logic control schemes for static VAR compensator to control system damping using global signal" Electric Power Systems Research ,67,2003, 115-122.
[8] J.Lu, M.H.Nehrir,and D.A.Pierre," A fuzzylogic - based adaptive damping controller for static VAR compensator" ,Electric Power Systems Research ,68,113 - 18,2004.
[9] Takashi Hiyama,Walid Hubbi,Thomas H. Ortmayer,"Fuzzy logic Control Scheme with Variable gain for Static Var Compensator to enhance Power System Stability", IEEE Transactions on Power Systems, vol.14, No.1, Feb,1999.
[10] K. Phorang, M. Leelajindakraireak and Y Mizutani,"Damping improvement of oscillation in power system by fuzzy logic based SVC stabilizer," Asia Pacific. IEEE/PES Transmission and Distribution Conference and Exhibition 2002, Vol.3, Oct. 2002, pp.1542-1547.
[11] D. Z. Fang, Yang Xiao dong; T. S. Chung and K. P.Wong, "Adaptive fuzzy-logic SVC damping controller using strategy of oscillation energy descent," IEEE Trans. on Power Systems, Vol.19(3) , Aug. 2004, pp.1414-1421.
[12] K. L. Lo and Khan Laiq, "Fuzzy logic based SVC for power system transient stability enhancement, International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT 2000), April 2000, pp.453- 458.
[13] P.K.Dash, S.Mishra, "Damping of multimodal power system oscillations by FACTS devices using non linear Takagi - Sugeno fuzzy controller", Electric Power Systems Research,25, 481-490,2003.
[14] A.Ghafori, M.R.Zolghadri and M.Ehsan, "Fuzzy controlled STATCOM for improving the Power System Transient Stability", IEEE international conference on Power system pp1178 - 1185, 2001.
[15] Ghadir Radman , Reshma S.Raje, " Dynamic model for power systems with multiple FACTS controllers" Electric Power Systems Research, 78, 361-371, 2008.
[16] N.Midhulananthan, C.A.Canizares, " Comparison of PSS, SVC and STATCOM controllers for damping Power System Oscillations", IEE Transactions on Power Systems, vol.18,No.2, May 2003.
[17] Vladimiro Miranda, "An improved Fuzzy Inference System for Voltage / VAR control" IEEE Transactions on Power Systems , vol.22,No.4, November 2007.