Stability evaluation of a power network in connection with a unit regulating exciter based on system frequency characteristics |
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| Authors: | D. P. PAPADOPOULOS M. HAMED H. YASIN |
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| Affiliation: | 1. Department of Electrical Engineering , Democritus University of Thrace and Public Power Corporation of Greece , 671 00, Xanthi, Greece;2. Faculty of Engineering, Suez Canal University , Port Said, Egypt;3. Faculty of Engineering , Menoufia University , Shebin El Kom, Egypt |
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| Abstract: | This paper presents a mathematical model (algorithm) suitable for calculating the transfer function of a practical power network. For this network the steady-slate stability limits are derived and the non-linear characteristics of the transfer function are considered. The computational results obtained by using the proposed model differ from the corresponding ones obtained previously by approximate methods, whereas they are in close agreement with similar results obtained from experimental measurements. The oscillation coefficients of first- and second-order derivatives of the generator current highly characterize the performance of the locus diagram of the generator transfer function. The proposed accurate technique is applied to a part of the Egyptian power system consisting of a power station, a substation and a 500 kV double circuit transmission line. |
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