DocumentCode :
3601951
Title :
Loss-of-Excitation Protection and Underexcitation Controls Correlation for Synchronous Generators in a Real-Time Digital Simulator
Author :
Coelho, Aurelio L. M. ; Carrer, Carlos E. B. ; Guerrero, Carlos A. V. ; Silveira, Paulo M.
Author_Institution :
Itajuba Fed. Univ., Itajuba, Brazil
Volume :
51
Issue :
5
fYear :
2015
Firstpage :
3579
Lastpage :
3590
Abstract :
This paper presents the results of a study that analyzes the relationship between the excitation system of a synchronous machine and the settings of the loss-of-excitation (LOE) relay applied to protect this machine. A complete generation system taking into account all the physical components was modeled in a real-time digital simulator, including a new excitation system model (ST7B). By considering a method to protect the generator against partial and total LOE, the settings of the LOE protection were made taking into account the technical data of the synchronous machine. A hardware-in-the-loop simulation using a numeric relay was implemented in a laboratory. Thus, several tests were performed in order to evaluate the coordination between the protective relay and the limits of the modeled excitation system during underexcited operation.
Keywords :
machine control; machine protection; real-time systems; relay protection; synchronous generators; ST7B excitation system model; complete generation system; hardware-in-the-loop simulation; loss-of-excitation protection; loss-of-excitation relay; numeric relay; physical components; protective relay; real-time digital simulator; synchronous generators; synchronous machine; underexcitation controls; Impedance; Power system stability; Reactive power; Relays; Synchronous generators; Voltage control; Hardware in the loop (HIL); RTDS; hardware-in-the-loop; loss of excitation (LOE); loss-of-excitation; protection; real-time digital simulator (RTDS); steady-state stability limit; steady-state stability limit (SSSL); synchronous generator; underexcitation limiter; underexcitation limiter (UEL);
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/TIA.2015.2424884
Filename :
7090985
Link To Document :
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