Optimizing Feedback Coefficients Of A Practical Synchronous Generator Nonlinear State Observer Using Additional Signals | ||||
| ERJ. Engineering Research Journal | ||||
| Article 5, Volume 21, Issue 2, April 1998, Page 53-69 PDF (1.31 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/erjm.1998.72469 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| H. A. Nour Eldin1; F. Fischer1; A. M, Abdel-Hamid2 | ||||
| 1Group of Automatic Control and Technical Cybernetics, University of Wuppertal, Germany | ||||
| 2Department of Electrical Engineering, Faculty of Engineering, El-MonouJia University, Shebin El-Kom, Egypt (Since 1996 on leave for Post-Doctoral visit at the University of Wuppertal, Germany) | ||||
| Abstract | ||||
| Synchronous generators are characterized by a nonlinearly interacting electrical and mechanical dynamics. Accurate and robust state reconsh-uction of this machine by an observer should be based on its nonlinear dynamic behavior to avoid intolerable errors. The authors of this paper had published a methodical design of a fill1 order nonlinear observer for turbogenerator systems and organized its experimental validation on a 120 MVA and 1000 MVA synchronous generators at Gud-Power Station in south Munich (Germany) and the Nuclear Power Station of Gosgen (Switzerland), Measured results from these power stations have proved a quite effectiveness of the proposed methodology on getting a stationary robust state reconstruction. However, some transient results are characterized with state oscillations. To prevent such transient oscillations, this paper introduces an optimum technique for the selection of the observer feedback constants. Moreover, additional signals, such as real, reactive and apparent power as well as the amplitude of the stator current are used for the observer feedback. These signals have proved to enhance damping of the observer states transient oscillations. | ||||
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