Wide-area stability control for damping interarea oscillations of interconnected power systems

In order to damp interarea power oscillations of interconnected power systems, the authors propose a two-loop framework of a wide-area stability control system, wherein the inner loop generates real-time damping control actions using wide-area feedback signals, while the external loop adjusts the controllers' parameters in a near-real-time way to accommodate the variation of operation conditions. A systematic approach is presented to design the control system, which includes an efficient model-reduction method based on the disturbance-injection technique and an improved Prony algorithm; the concept and calculation method of comprehensive observability and controllability to properly locate observers (PMUs) and controllers; co-ordinated and optimised tuning of multiple control gains; and a least-squares-based polynomial prediction algorithm to handle the communication delays. The proposed wide-area control system has been tested with a practical 262-machine, 1726-node interconnected power system. The modal analyses and the nonlinear simulation results have shown its effectiveness and advantages over traditional local PSSs in damping interarea oscillations and improving across-area transfer capabilities.

[1]  Xiaorong Xie,et al.  Simultaneously tuning decentralized nonlinear optimal excitation controllers in multimachine power systems , 2005 .

[2]  D. Kyr,et al.  A parametric LQ approach to multiobjective control system design , 1988, Proceedings of the 27th IEEE Conference on Decision and Control.

[3]  Joshua R. Smith,et al.  Transfer function identification in power system applications , 1993 .

[4]  G. Trudel,et al.  Multi-loop power system stabilizers using wide-area synchronous phasor measurements , 1998, Proceedings of the 1998 American Control Conference. ACC (IEEE Cat. No.98CH36207).

[5]  I. Kamwa,et al.  Using MIMO system identification for modal analysis and global stabilization of large power systems , 2000, 2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134).

[6]  Lamine Mili,et al.  Inter-area oscillation damping with power system stabilizers and synchronized phasor measurements , 1998, POWERCON '98. 1998 International Conference on Power System Technology. Proceedings (Cat. No.98EX151).

[7]  Xiaorong Xie,et al.  Dynamic tracking of low-frequency oscillations with improved Prony method in wide-area measurement system , 2004, IEEE Power Engineering Society General Meeting, 2004..

[8]  Balarko Chaudhuri,et al.  Wide-area measurement-based stabilizing control of power system considering signal transmission delay , 2004 .

[9]  J. F. Hauer,et al.  Making Prony analysis more accurate using multiple signals , 1999 .

[10]  Imad M. Jaimoukha,et al.  Simultaneous stabilisation approach for power system damping control design through TCPAR employing global signals , 2004 .

[11]  M. Sanaye-Pasand,et al.  Study, comparison and simulation of power system swing detection and prediction method , 2003, 2003 IEEE Power Engineering Society General Meeting (IEEE Cat. No.03CH37491).

[12]  Jian Li,et al.  Inter-area damping control of STATCOM using wide-area measurements , 2004, 2004 IEEE International Conference on Electric Utility Deregulation, Restructuring and Power Technologies. Proceedings.

[13]  G. G. Karady,et al.  A new fast-learning algorithm for predicting power system stability , 2001, 2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194).

[14]  Lamine Mili,et al.  A robust damping controller for power systems using linear matrix inequalities , 1999, IEEE Power Engineering Society. 1999 Winter Meeting (Cat. No.99CH36233).

[15]  D. Georges,et al.  Design of damping controllers using linear matrix inequalities techniques and distant signals to reduce control interactions , 2001, PICA 2001. Innovative Computing for Power - Electric Energy Meets the Market. 22nd IEEE Power Engineering Society. International Conference on Power Industry Computer Applications (Cat. No.01CH37195).

[16]  Ryouichi Tsukui,et al.  Fast generation shedding equipment based on the observation of swings of generators , 1988 .

[17]  Vijay Vittal,et al.  Solution for the crisis in electric power supply , 2001 .

[18]  Lamine Mili,et al.  Power system stability agents using robust wide area control , 2002 .

[19]  Umit Ozguner,et al.  Stability of linear feedback systems with random communication delays , 1994 .

[20]  Shaopeng Wang,et al.  Power system damping controller design-using multiple input signals , 2000 .

[21]  Rastko Zivanovic,et al.  Implementation of PMU technology in state estimation: an overview , 1996, Proceedings of IEEE. AFRICON '96.

[22]  T. Margotin,et al.  Delayed-input wide-area stability control with synchronized phasor measurements and linear matrix inequalities , 2000, 2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134).

[23]  S. Lall,et al.  Decentralized control information structures preserved under feedback , 2002, Proceedings of the 41st IEEE Conference on Decision and Control, 2002..

[24]  Innocent Kamwa,et al.  Wide-area measurement based stabilizing control of large power systems-a decentralized/hierarchical approach , 2001 .

[25]  B. Chaudhuri,et al.  Robust damping of multiple swing modes employing global stabilizing signals with a TCSC , 2004, IEEE Transactions on Power Systems.

[26]  Arun G. Phadke,et al.  Synchronized phasor measurements-a historical overview , 2002, IEEE/PES Transmission and Distribution Conference and Exhibition.