Title :
Effect of Load Restoration on an Integrated Autonomous Protection System Against Voltage Instability
Author :
Mandoulidis, P. ; Lambrou, C. ; Vournas, C.
Author_Institution :
Sch. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Athens, Greece
Abstract :
An integrated autonomous protection system against voltage instability based on monitoring the secondary (controlled) voltages of bulk power delivery transformers is modified in this paper to include also firm load shedding. The performance of the proposed protection scheme is investigated in the presence of self-restoring loads using a small test system consisting of 9 buses. Simulations on this test system show adequate performance of the protection in two cases of severe and marginal voltage instability respectively.
Keywords :
load shedding; power system protection; power system restoration; power system stability; power transformers; bulk power delivery transformers; firm load shedding; integrated autonomous protection system; load restoration; secondary voltages; voltage instability; Erbium; Generators; emergency detection; load shedding; load tap changers; restorative loads; system protection scheme; voltage stability monitoring;
Conference_Titel :
PowerTech, 2011 IEEE Trondheim
Conference_Location :
Trondheim
Print_ISBN :
978-1-4244-8419-5
Electronic_ISBN :
978-1-4244-8417-1
DOI :
10.1109/PTC.2011.6019342
