A Procedure For Tuning Statcom Parameters For Damping Power System Oscillations

This work investigates the effects of the STATCOM (Static Synchronous Compensator), a FACTS (Flexible AC Transmission Systems) device, on small-signal power system angle stability. This investigation is carried out for a single machine connected to an infinite bus via a loss-less transmission line. The study is based on investigation of the eigenvalues of the linearized power system model in the framework of dynamic bifurcation theory. The tuning method of the STATCOM gains aiming the H2 norm minimization is briefly explained, and the presented simulations results enable an analysis of the effects of this controller for damping power systems low frequency electromechanical oscillations. Copyright © 2005 IFAC.163742Chun, L., Qirong, J., Xiarong, X., Zhonghong, W., Rule-based control for STATCOM to increase power system stability (1998) International Conference on Power System Technology, pp. 372-376Deckmann, S.M., Da Costa, V.F., A power sensitivity model for electromechanical oscillation studies (1994) IEEE Transactions on Power Systems, 9 (2), pp. 965-971Gyugyi, L., Converter-based FACTS controlers (1998) IEE Colloquium, pp. 1-11Hingorani, N.G., Gyugyi, L., (2000) Understanding FACTS: Concepts and Technology of Flexible AC Transmission Systems, , Jon Wiley & SonsKundur, P., (1993) Power System Stability and Control, 1176p. , McGraw-HillMithulananthan, N., Canizares, A.C., Reeve, J., Rogers, J.G., Comparison of PSS, SVC, and STATCOM controllers for damping power system oscillations (2003) IEEE Transactions on Power Systems, 18 (2), pp. 786-792Nassif, A.B., Kopcak, I., Da Costa, V.F., Da Silva, L.C.P., Comparative analysis of SVC and STATCOM for damping power system low frequency electromechanical oscillations (2003) COBEP -7° Brazilian Congress of Power ElectronicsOliveira, M.C., Skelton, R.E., (2000) Stability Tests for Constrained Linear Systems, Perspectives on Robust Control, pp. 241-257. , Ed. London, England, Springer-VerlagYing, Y., Chen, J., Han, Y., STATCOM modeling and analysis in damping power system oscillations (2000) Energy Conversion Engineering Conference and Exhibit, 2000, (IECEC) 35th Intersociety, 2, pp. 756-762. , vol.

Synthesis of new double perovskites La 1.98 Mn 1.11 Mo 0.89 O 5.93 and La 1.92 Mn 1.29 Mo 0.71 O 5.84 : Characterization of structural and magnetic properties

International audienc

Comparison Of Pss, Svc And Statcom For Damping Power System Local Mode Oscillations

This work investigates the effects of three controllers, the PSS (Power System Stabilizer), and two FACTS devices, namely SVC (Static VAR Compensator) and STATCOM (Static Synchronous Compensator), on small-signal power system angle stability. This investigation is carried out for a single machine connected to an infinite bus via a loss-less transmission line. The study is based on investigation of the eigenvalues of the linearized power system model in the framework of dynamic bifurcation theory. The simulations results presented enable a comparative analysis of the effects of these controllers on damping power systems low frequency electromechanical oscillations.533538Gyugyi, L., Converter-based FACTS controlers (1998) IEE Colloquium, pp. 1-11. , 23 NovMithulananthan, N., Canizares, C.A., Reeve, J., Rogers, G.J., Comparison of PSS, SVC, and STATCOM controllers for damping power system oscillations (2003) IEEE Transactions on Power Systems, 18 (2), pp. 786-792. , MayDeckmann, S.M., Da Costa, V.F., A power sensitivity model for electromechanical oscillation studies (1994) IEEE Transactions on Power Systems, 9 (2), pp. 965-971Nassif, A.B., Kopcak, I., Da Costa, V.F., Da Silva, L.C.P., Comparative analysis of SVC and STATCOM for damping power system low frequency electromechanical oscillations COBEP' 2003-7° Brazilian Congress of Power Electronics, pp. 646-650Hingorani, N.G., Gyugyi, L., (2000) Understanding FACTS: Concepts and Technology of Flexible AC Transmission Systems, , Jon Wiley & SonsCanizares, C.A., Faur, Z.T., Analysis of SVC and TCSC controllers in voltage collapse (1999) IEEE Transactions on Power Systems, 14 (1), pp. 158-165. , FebChun, L., Qirong, J., Xiarong, X., Zhonghong, W., Rule-based control for STATCOM to increase power system stability Proceedings of the International Conference on POWERCON '98, 1, pp. 372-37

Computer-assisted surgery for replacement of the temporomandibular joint with customized prostheses: can we validate the results?

Purpose: Replacing the temporomandibular joint poses an important challenge to maxillofacial surgeons, and for certain disorders, it represents the treatment’s gold standard. Computer-assisted surgery (comprising preoperative virtual planning, virtual intraoperative navigation and 3D printing) is a useful tool for this type of surgery. However, we do not know if and how much the final position of the prosthesis differs, in absolute values, from what was planned virtually in the preoperative phase. We propose a comparative result validation system for temporomandibular joint replacement Methods: In the present study, we propose a comparative validation system using overlapping images, between the model obtained with preoperative virtual planning and the postoperative result. Results: The mean difference for all screws of the glenoid prosthesis was 2.08 mm (range, 1.20–3.03) and for all screws of the condylar prosthesis it was 2.33 mm (range, 1.16–3.56). Mean overall difference between both prostheses in all patients was 2.21 mm (range, 1.16–3.56). Conclusions: The validation system proposed by overlapping pre- and postoperative images in temporomandibular joint replacement allowed us to establish differences in absolute values between the virtual preoperative model and the actual postoperative result expressed in millimeters.Fil: Boccalatte, Luis Alejandro. Instituto Universidad Escuela de Medicina del Hospital Italiano; ArgentinaFil: Nassif, M.G.. Instituto Universidad Escuela de Medicina del Hospital Italiano; ArgentinaFil: Figari, Marcelo Fernando. Instituto Universidad Escuela de Medicina del Hospital Italiano; ArgentinaFil: Gómez, N.L.. Instituto Universidad Escuela de Medicina del Hospital Italiano; ArgentinaFil: Argibay, M.C.. Instituto Universidad Escuela de Medicina del Hospital Italiano; ArgentinaFil: Mancino, Axel Victor Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Medicina Traslacional e Ingeniería Biomédica - Hospital Italiano. Instituto de Medicina Traslacional e Ingeniería Biomédica.- Instituto Universitario Hospital Italiano de Buenos Aires. Instituto de Medicina Traslacional e Ingeniería Biomédica; ArgentinaFil: Ritacco, Lucas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Medicina Traslacional e Ingeniería Biomédica - Hospital Italiano. Instituto de Medicina Traslacional e Ingeniería Biomédica.- Instituto Universitario Hospital Italiano de Buenos Aires. Instituto de Medicina Traslacional e Ingeniería Biomédica; Argentin