Study of the transient time constant of the model synchronous generator

Author

Guorui, Xu ; Xiaofang, Liu ; Hongyu, Wang ; Jinping, Kang ; Yuantai, Niu

Author_Institution

Sch. of Electr. & Electron. Eng., North China Electr. Power Univ., Beijing, China

fYear

2011

fDate

20-23 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

In order to study the effects of the much larger stator and rotor resistance (in per unit, compared to the normal one) on the transient time constant in the model synchronous generators, this paper deduce the improved analytical expression of exciting current under no-load and three-phases´ short circuit situation, with the resistance of stator and rotor considered. The comparison of the results from improved analytical solution and field test as well as the calculation results of PARK equations and traditional analytical solution shows the correctness and validity of this model. The results reveal that T_d´ of the synchronous generator start with a small decrease and then increase gradually as the stator resistance increased, and T_a of the synchronous generator start with a small decrease and then increase gradually as the rotor resistance increased.

Keywords

machine control; rotors; stators; synchronous generators; transients; PARK equation; exciting current; model synchronous generator; no load condition; rotor resistance; stator resistance; three phase short circuit condition; transient time constant; Equations; Mathematical model; Resistance; Rotors; Stator windings; Transient analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4577-1044-5

Type

conf

DOI

10.1109/ICEMS.2011.6073765

Filename

6073765