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A new approach to reduce the non-linear characteristics of a stressed power system by using the normal form technique in the control design of the excitation system

Conference Paper


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Abstract


  • In this paper, a new approach is presented to reduce the nonlinear characteristics of a stressed power system by reducing its second-order modal interaction through retuning some parameters of the generator excitation system. In order to determine the second-order modal interaction of the system, a new index on nonlinearity is developed using normal form theory. Using the proposed index of nonlinearity, a sensitivity function is formed to indicate the most effective excitation system parameters in the nonlinear behavior of the system. These dominant parameters are tuned to reduce the second-order modal interaction of the system and to reduce the index on nonlinearity. The efficiency of the proposed method is validated using a four-machine two-area test system. Simulation results show that a proper tuning of the excitation controller can reduce the second-order modal interaction of the system and can even improve the transient stability margin of the network.

Publication Date


  • 2015

Citation


  • H. Lomei, D. Sutanto, K. M. Muttaqi & M. Assili, "A new approach to reduce the non-linear characteristics of a stressed power system by using the normal form technique in the control design of the excitation system," in Industry Applications Society Annual Meeting, 2015 IEEE, 2015, pp. 1-6.

Scopus Eid


  • 2-s2.0-84957705781

Ro Full-text Url


  • http://ro.uow.edu.au/context/eispapers/article/6636/type/native/viewcontent

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5608

Start Page


  • 1

End Page


  • 6

Abstract


  • In this paper, a new approach is presented to reduce the nonlinear characteristics of a stressed power system by reducing its second-order modal interaction through retuning some parameters of the generator excitation system. In order to determine the second-order modal interaction of the system, a new index on nonlinearity is developed using normal form theory. Using the proposed index of nonlinearity, a sensitivity function is formed to indicate the most effective excitation system parameters in the nonlinear behavior of the system. These dominant parameters are tuned to reduce the second-order modal interaction of the system and to reduce the index on nonlinearity. The efficiency of the proposed method is validated using a four-machine two-area test system. Simulation results show that a proper tuning of the excitation controller can reduce the second-order modal interaction of the system and can even improve the transient stability margin of the network.

Publication Date


  • 2015

Citation


  • H. Lomei, D. Sutanto, K. M. Muttaqi & M. Assili, "A new approach to reduce the non-linear characteristics of a stressed power system by using the normal form technique in the control design of the excitation system," in Industry Applications Society Annual Meeting, 2015 IEEE, 2015, pp. 1-6.

Scopus Eid


  • 2-s2.0-84957705781

Ro Full-text Url


  • http://ro.uow.edu.au/context/eispapers/article/6636/type/native/viewcontent

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5608

Start Page


  • 1

End Page


  • 6