DocumentCode :
3328969
Title :
Simulation analysis for asynchronous operation capacity of turbogenerator under excitation-loss
Author :
Hu Jin-yao ; Liang Yan-ping ; Chen Jing ; Huang Hao
Author_Institution :
Inst. of Electr. & Electron. Eng., Harbin Univ. of Sci. & Technol., Harbin, China
Volume :
1
fYear :
2011
fDate :
22-24 Aug. 2011
Firstpage :
529
Lastpage :
532
Abstract :
Based on single-generator infinite-bus system model, the asynchronous operation capacities of a 600MW turbogenerator after direct short-circuit excitation-loss under 100%, 60% and 40% rated power operation conditions are researched. The parameters such as stator voltage, stator current, rotor current, active power and reactive power, speed are obtained after direct short-circuit excitation-loss. The results indicate that the turbogenerator can´t enter into the steady asynchronous stage under 100% rated power, and the stator current is attained 2.65 times rated current. The turbogenerator can enter into the steady asynchronous stage under 60% rated power, while the stator current is exceeded 1.1 times rated current. The asynchronous operation is allowed for short time under 40% rated power, because the stator current is less than permissible value of safety operation and the decreasing rate of terminal voltage is less than 10%. The conclusions can provide an important theoretical foundation for large turbogenerator design and asynchronous operation capacity analysis.
Keywords :
asynchronous generators; reactive power; short-circuit currents; turbogenerators; active power; asynchronous operation capacity analysis; direct short-circuit excitation-loss; power 600 MW; reactive power; rotor current; safety operation; simulation analysis; stator current; stator voltage; turbogenerator design; Circuit faults; Integrated circuit modeling; Load modeling; Mathematical model; Stators; Turbogenerators; Windings; capacity of asynchronous operation; short-circuit excitation-loss; single-generator infinite-bus system;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Strategic Technology (IFOST), 2011 6th International Forum on
Conference_Location :
Harbin, Heilongjiang
Print_ISBN :
978-1-4577-0398-0
Type :
conf
DOI :
10.1109/IFOST.2011.6021079
Filename :
6021079
Link To Document :
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