Online Line Switching Method for Enhancing the Small-Signal Stability Margin of Power Systems

As a power system operating point alters its position due to variations in power injections, its small-signal stability margin (SSSM) may decrease. Under this situation, a network topology change via line switching can increase the SSSM. In this paper, an online line switching method for maximizing the SSSM is presented, taking into account both the solution quality and the required computational speed. To balance the tradeoff between speed and solution quality, the line switching method presented in this paper is composed of three stages: 1) screening; 2) ranking; and 3) detailed evaluation. The effectiveness of the presented three-stage method is evaluated on IEEE standard power systems with promising results.

[1]  Zhengchun Du,et al.  A novel method for computing small-signal stability boundaries of large-scale power systems , 2013, IEEE Transactions on Power Systems.

[2]  Hsiao-Dong Chiang,et al.  CPFLOW: a practical tool for tracing power system steady-state stationary behavior due to load and generation variations , 1995 .

[3]  S. Oren,et al.  Optimal Transmission Switching—Sensitivity Analysis and Extensions , 2008, IEEE Transactions on Power Systems.

[4]  V. Vittal,et al.  Corrective switching algorithm for relieving overloads and voltage violations , 2005, IEEE Transactions on Power Systems.

[5]  V. Ajjarapu,et al.  Sensitivity-Based Efficient Identification of Oscillatory Stability Margin and Damping Margin Using Continuation of Invariant Subspaces , 2011, IEEE Transactions on Power Systems.

[6]  H. Glavitsch,et al.  Security enhancement using an optimal switching power flow , 1989, Conference Papers Power Industry Computer Application Conference.

[7]  James S. Thorp,et al.  Power system small-signal stability region calculation method based on the guardian map theory , 2014 .

[8]  M. Ferris,et al.  Optimal Transmission Switching , 2008, IEEE Transactions on Power Systems.

[9]  V. Ajjarapu,et al.  Application of a novel eigenvalue trajectory tracing method to identify both oscillatory stability margin and damping margin , 2006, IEEE Transactions on Power Systems.

[10]  Andrija T. Saric,et al.  Rapid Small-Signal Stability Assessment and Enhancement Following Changes in Topology , 2015, IEEE Transactions on Power Systems.

[11]  N. Martins,et al.  Robust Design of a TCSC Oscillation Damping Controller in a Weak 500-kV Interconnection Considering Multiple Power Flow Scenarios and External Disturbances , 2009, IEEE Transactions on Power Systems.

[12]  J.N. Wrubel,et al.  Practical experience with corrective switching algorithm for on-line applications , 1995, Proceedings of Power Industry Computer Applications Conference.

[13]  D. Hill,et al.  A general method for small signal stability analysis , 1998 .

[14]  H. Glavitsch,et al.  Network Topology Optimization with Security Constraints , 1986, IEEE Transactions on Power Systems.

[15]  Joe H. Chow,et al.  A comparison of classical, robust, and decentralized control designs for multiple power system stabilizers , 2000 .

[16]  Joost Rommes,et al.  Computing large-scale system eigenvalues most sensitive to parameter changes, with applications to power system small-signal stability , 2009 .

[17]  N.G. Bretas,et al.  A new methodology for the coordinated design of robust decentralized power system damping controllers , 2004, IEEE Transactions on Power Systems.

[18]  Lei Wang,et al.  Toward Online Line Switching for Increasing Load Margins to Static Stability Limit , 2016, IEEE Transactions on Power Systems.

[19]  R.P. O'Neill,et al.  Optimal Transmission Switching With Contingency Analysis , 2010, IEEE Transactions on Power Systems.

[20]  Glauco N. Taranto,et al.  Simultaneous tuning of power system damping controllers using genetic algorithms , 2000 .

[21]  Kory W. Hedman,et al.  Topology Control for Load Shed Recovery , 2014, IEEE Transactions on Power Systems.

[22]  C. Portela,et al.  Computing small-signal stability boundaries for large-scale power systems , 2002 .

[23]  Peter Luh,et al.  Corrective line switching with security constraints for the base and contingency cases , 2013, 2013 IEEE Power & Energy Society General Meeting.