Title :
Overloading algorithm of synchronous generators under unbalanced steady state operation
Author_Institution :
Dept. of Electr. Eng., Harbin Inst. of Technol., Harbin, China
Abstract :
In order to analyze the problem of synchronous machines under unbalanced steady state operation, the relationships of fundamental-harmonic waves (RFHW) between phase and dq 0 coordinates are proposed in this paper by utilizing Park and its reverse conversion. Utilizing the matrix overloading technique (MOT), a fundamental-harmonic model (FHM) in form of three-phase impedance matrix is derived and based on this model, an overloading algorithm (OA) is proposed. It is then applied to the three well known conditions of unbalanced short-circuit and a general case of unbalanced steady state operation. Finally, the feasibility and effectiveness of the proposed algorithm are validated by numerical results.
Keywords :
harmonics; impedance matrix; short-circuit currents; synchronous generators; Park equation; fundamental-harmonic model; fundamental-harmonic wave relationship; matrix overloading technique; overloading algorithm; synchronous generators; synchronous machines; three phase impedance matrix; unbalanced short circuit; unbalanced steady state operation; Equations; Harmonic analysis; Load modeling; Mathematical model; Stators; Steady-state; Synchronous machines; fundamental-harmonic model; overloading algorithm; synchronous machines;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073768
