Estudo das limitações impostas ao amortecimento de oscilações eletromecânicas pelos zeros da FTMA de controladores suplementares

The main objective of this work is to analyze the influence of different input signals for supplementary damping controller (POD - Power Oscillation Damping) on the location and control of FACTS devices UPFC (Unified Power Flow Controller), in order to damp low frequency oscillations in Electric Power System (EPS). Will analyze three input signals, two signals available locally (electric current and power flow in UPFC line installation) and a remote signal (angular velocity). To this purpose, the Power Sensitivity Model (PSM) is used to represent the EPS. In the usual way, a sensitivity analysis, using the residue method, provides the location for installation of the UPFC/POD and the procedure for setting the parameters of the controller to damp a pole of interest. However, it will be shown in this work due to the proximity of a zero to an eigenvalue of interest, the largest residue does not necessarily provide the best location for all UPFC / POD, as observed more frequently in local signals. Comparative analyses of efficiency of input signals to the POD are presented to the New England system with 10 generators, 39 buses and 46 transmission lines.

[1]  V. F. da Costa,et al.  A power sensitivity model for electromechanical oscillation studies , 1994 .

[2]  U.P. Mhaskar,et al.  Power oscillation damping using FACTS devices: modal controllability, observability in local signals, and location of transfer function zeros , 2006, IEEE Transactions on Power Systems.

[3]  P. L. So,et al.  A current injection UPFC model for enhancing power system dynamic performance , 2000, 2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077).

[4]  G. Andersson,et al.  Application of modal analysis of zeros to power systems control and stability , 1998 .

[5]  Laszlo Gyugyi,et al.  Unified power-flow control concept for flexible AC transmission systems , 1992 .

[6]  Paul Van Dooren,et al.  Computation of zeros of linear multivariable systems , 1980, Autom..

[7]  Zheng Xu,et al.  A novel SVC supplementary controller based on wide area signals , 2006, 2006 IEEE Power Engineering Society General Meeting.

[8]  James D. McCalley,et al.  Damping controller design for power system oscillations using global signals , 1996 .

[9]  L. C. Zanetta,et al.  Pole placement method using the system matrix transfer function and sparsity , 2001 .

[10]  G. Andersson,et al.  Damping of inter-area and local modes by use of controllable components , 1995 .

[11]  N. Martins,et al.  Determination of suitable locations for power system stabilizers and static VAr compensators for damping electromechanical oscillations in large scale power systems , 1989, Conference Papers Power Industry Computer Application Conference.

[12]  N. Martins,et al.  Efficient methods for finding transfer function zeros of power systems , 1991, [Proceedings] Conference Papers 1991 Power Industry Computer Application Conference.

[13]  G. J. Rogers,et al.  A fundamental study of inter-area oscillations in power systems , 1991 .