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Multi-Line Flexible Alternating Current Transmission System (FACTS) Controller for Transient Stability Analysis of a Multi-Machine Power System Network

Authors: A.V.Naresh Babu, S.Sivanagaraju


A considerable progress has been achieved in transient stability analysis (TSA) with various FACTS controllers. But, all these controllers are associated with single transmission line. This paper is intended to discuss a new approach i.e. a multi-line FACTS controller which is interline power flow controller (IPFC) for TSA of a multi-machine power system network. A mathematical model of IPFC, termed as power injection model (PIM) presented and this model is incorporated in Newton-Raphson (NR) power flow algorithm. Then, the reduced admittance matrix of a multi-machine power system network for a three phase fault without and with IPFC is obtained which is required to draw the machine swing curves. A general approach based on L-index has also been discussed to find the best location of IPFC to reduce the proximity to instability of a power system. Numerical results are carried out on two test systems namely, 6-bus and 11-bus systems. A program in MATLAB has been written to plot the variation of generator rotor angle and speed difference curves without and with IPFC for TSA and also a simple approach has been presented to evaluate critical clearing time for test systems. The results obtained without and with IPFC are compared and discussed.

Keywords: Flexible alternating current transmission system (FACTS), first swing stability, interline power flow controller (IPFC), power injection model (PIM).

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[1] N.G.Hingorani and L.Gyugyi, "Understanding FACTS-Concepts and Technology of Flexible AC Transmission Systems," IEEE press, First Indian Edition, 2001.
[2] P.Kundur, "Power System Stability and Control," McGraw Hill, 1994.
[3] R.Mihalic,P.Zunko and D.Povh, "Improvement of transient stability using unified power flow controller," IEEE Trans. Power Del., vol.11, no.1, pp.485-492, Jan.1996.
[4] U.Gabrijel and R.Mihalic, "Direct methods for transient stability assessment in power systems comprising controllable series devices," IEEE Trans. Power Syst., vol.17, no.4, pp.1116-1122, Nov.2002.
[5] R.Mihalic and U.Gabrijel, "A structure-preserving energy function for a static series synchronous compensator," IEEE Trans. Power Syst., vol.19, no.3, pp.1501-1507, Aug.2004.
[6] V.Azbe,U.Gabrijel, D.Povh and R.Mihalic,"The energy function of a general multimachine system with a unified power flow controller," IEEE Trans. Power Syst., vol.20, no.3, pp.1478-1485, Aug.2005.
[7] Haque M.H., "Effects of exact line model and shunt FACTS devices on first swing stability limit," Int. J. Power Energy Syst., vol.25, no.2, pp. 121- 127, 2005.
[8] H.Chen,Y.Wang and R.Zhou, "Transient and voltage stability enhancement via co-ordinated excitation and UPFC control," IEE Proc.- Gener.Transm.Distrib., vol.148, no.3, pp.201-208, May 2001.
[9] S.Abazari, J.Mahdavi ,H.Mokhtari and A.Emadi, "Transient stability improvement by using advanced static VAR compensators," Electric Power Components and Syatems,vol.31,pp.321-334,2003.
[10] M.H.Haque, " Improvement of first swing stability limit by utilizing full benefit of shunt FACTS devices," IEEE Trans. Power Syst., vol.19, no.4, pp.1894-1902, Nov. 2004.
[11] Dheeman Chatterjee and Arindam Ghosh, "TCSC control design for transient stability improvement of a multi-machine power system using trajectory sensitivity," Electrical. Power Systems Research, vol. 77 , pp. 470-483, 2007.
[12] M.S.Castro,H.M.Ayres,V.F.da Costa and L.C.P.da silva, "Impacts of the SSSC control mode on small-signal and transient stability of a power system," Electric Power Systems Research, vol. 77 , pp. 1-9, 2007.
[13] S.Panda and R.N.Patel, " Optimal location of shunt FACTS controllers for transient stability improvement employing genetic algorithm," Electric Power Components and Systems, vol.35, no.2,pp.189- 203, 2007.
[14] N.Mo,Z.Y.Zou,K.W Chan and T.Y.G.Pong," Transient stability constrained optimal power flow using particle swarm optimisation," IET Gener.Transm.Distrib., vol.1, no.3,pp.476-483, May 2007.
[15] H.R.Cai,C.Y.chung and K.P Wong, "Application of differential evolution algorithm for transient stability constrained optimal power flow," IEEE Trans. Power Systems, vol.23, no.2, pp.719-728, May 2008.
[16] Lei Chen,Yong Min,Fei Xu and Kai-Peng Wang, "A Continuation - based method to compute the relevant unstable equilibrium points for power system transient stability analysis," IEEE Trans. Power Systems, vol.24, no.1, pp.165-172, Feb. 2009.
[17] Quanyuan Jiang and Guangchao Geng, "A Reduced -space interior point method for transient stability constrained optimal power flow, " IEEE Trans. Power Systems, vol.25, no.3, pp.1232-1240, Aug. 2010.
[18] Quanyuan Jiang and Zhiguang Huang, "An enhanced numerical discretization method for transient stability constrained optimal power flow," IEEE Trans. Power Systems, vol.25, no.4, pp.1790-1797, Nov. 2010 .
[19] A.V.Naresh Babu, S.Sivanagaraju, Ch.Padmanabharaju and T.Ramana" Power flow analysis of a power system in the presence of interline power flow controller(IPFC)," ARPN Journal of Engineering and Applied Sciences, vol.5, no.10,pp.1-4, Oct. 2010.
[20] A.V.Naresh Babu and S.Sivanagaraju,"Mathematical modelling,analysis and effects of interline power flow controller(IPFC) parameters in power flow studies," 4th IEEE- India Int. Conf. on Power Electronics, New Delhi, India, Jan. 2011.
[21] D.Thukaram and A.Lomi, "Selection of static VAR compensator location and size for system voltage stability improvement," Electric Power Systems Research, vol. 54 , pp. 139-150, 2000.
[22] D.Thukaram, L.Jenkins and K.Visakha," Improvement of system security with unified power flow controller at suitable locations under network contingencies of interconnected systems," IEE Proc.- Gener.Transm.Distrib., vol.152, no.5, pp.682-690, Sep.2005.
[23] H.Saadat," Power System Analysis," Tata McGraw-Hill Edition, 2002.