Identification of suitable nodes for the placement of reactive power compensators

The occurrence of Voltage collapse has been considered a frequent phenomenon in the recent time and has been a growing concern to the power system utility. Thus, the importance of identifying nodes where reactive power compensator can be placed for voltage stability enhancement. This paper proposed a technique based on the network topological structure of the power system. The suggested technique is found by computing the critical mode and the associated eigenvectors of the system. The node, which has the highest contributions to the critical mode identified is computed and considered as the weakest node. Comparative analysis of the suggested approach with the power flow based technique of modal analysis is also done. The results obtained show that suitable node for the placement of reactive power compensators is better identified using the suggested approach as it saves time and does not depend on performing a time consuming power flow solution before the weakest node is identified.

[1]  John T. Agee,et al.  Optimal location of network devices using a novel inherent network topology based technique , 2011, IEEE Africon '11.

[2]  B. Gao,et al.  Voltage Stability Evaluation Using Modal Analysis , 1992, IEEE Power Engineering Review.

[3]  P. Rastgoufard,et al.  Steady state voltage stability enhancement using shunt and series FACTS devices , 2015, 2015 Clemson University Power Systems Conference (PSC).

[4]  Yue Yuan,et al.  Comparison of load margin analysis for steady state voltage stability , 2007, 2007 42nd International Universities Power Engineering Conference.

[5]  C. Sharma,et al.  Determination of the applicability of using modal analysis for the prediction of voltage stability , 2008, 2008 IEEE/PES Transmission and Distribution Conference and Exposition.

[6]  C. Reis,et al.  A comparison of voltage stability indices , 2006, MELECON 2006 - 2006 IEEE Mediterranean Electrotechnical Conference.

[7]  M. S. Sachdev,et al.  Technique for online prediction of voltage collapse , 2004 .

[8]  A.R. Messina,et al.  Application of FACTS devices to improve steady state voltage stability , 2000, 2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134).

[9]  A. C. Zambroni de Souza,et al.  QV and PV curves as a planning tool of analysis , 2011, 2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT).

[10]  Tukaram Moger,et al.  A novel index for identification of weak nodes for reactive compensation to improve voltage stability , 2015 .

[11]  P. Kundur,et al.  Power system stability and control , 1994 .

[12]  J. Amarnath,et al.  Effect of FACTS devices on enhancement of Voltage Stability in a deregulated power system , 2014, 2014 International Conference on Circuits, Power and Computing Technologies [ICCPCT-2014].