DocumentCode :
3087830
Title :
Protective relay setting of the tie line tripping and load shedding for the industrial power system
Author :
Ke, Yu-Lung ; Hsu, Chen-Ting ; Chen, Chao-Shun
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
fYear :
1999
fDate :
36373
Abstract :
This paper presents the proper underfrequency relay settings to enhance the operation of industrial power systems with cogeneration facilities. A cogeneration unit has been installed in the plant in 1996 to supply the power demand of the plant. The cogeneration unit always faces a shut down problem when there is a severe fault on the nearby Taipower network. It is therefore necessary to investigate the plant protective relay settings to prevent the whole plant blackout when the contingency occurs. The transient stability analysis has been performed by considering both the detail models of the cogenerators with the governor and exciter control systems and the external utility power system. The under frequency relay settings for tie line tripping and load shedding are designed to prevent the tripping of the cogeneration units so that the electricity service to the critical loads of the industrial customer can be maintained in case serious external disturbances such as short circuit faults occur. In this study, the scheme of underfrequency relay settings has been developed for the power system of a large synthetic rubber manufacturer with a large cogeneration unit. Three study cases have been selected for the transient stability analysis to verify the effectiveness of the proposed protective relay setting
Keywords :
cogeneration; industrial power systems; load shedding; power system protection; power system transient stability; relay protection; Taipower network fault; cogeneration facilities; exciter control system; external utility power system; governor control system; industrial power system; load shedding; protective relay setting; short circuit faults; synthetic rubber manufacturer; tie line tripping; transient stability analysis; underfrequency relay settings; Circuit faults; Cogeneration; Industrial power systems; Power system modeling; Power system protection; Power system relaying; Power system transients; Protective relaying; Stability analysis; Transient analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial & Commercial Power Systems Technical Conference, 1999 IEEE.
Conference_Location :
Sparks, NV
Print_ISBN :
0-7803-5593-8
Type :
conf
DOI :
10.1109/ICPS.1999.787231
Filename :
787231
Link To Document :
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