DocumentCode :
570235
Title :
Understanding slow voltage instability
Author :
Johnson, M. ; Vaziri, M. ; Vadhva, S.
Author_Institution :
California State Univ. Sacramento (CSUS), Sacramento, CA, USA
fYear :
2012
fDate :
8-10 Aug. 2012
Firstpage :
502
Lastpage :
508
Abstract :
This paper will explain the dynamics of slow voltage instability on large power systems at a basic and intuitive level. This paper will outline the voltage instability phenomenon and leave the specific details for individual investigation. Slow Voltage Instability is a phenomenon which occurs over several minutes to an hour; where as Transient Voltage Collapse occurs over several seconds. Understanding what causes voltage instability and why this may cascade into a voltage collapse requires knowledge of how key components of the power system are affected by low voltage. Some of these components will respond at different time frames, contributing to faster transient voltage instability, and/or slower long term voltage instability. Simulations will show how the components of voltage instability contribute to cause low voltage. Popular power flow methods such as PV and QV curves are used to show how a system can be analyzed for voltage stability. Finally, there are several possible solutions that will be discussed that could help stabilize voltage for large power systems.
Keywords :
load flow control; power system control; power system dynamic stability; power system transient stability; voltage control; PV curve; QV curve; power flow method; power system; slow voltage dynamic instability; transient voltage collapse; transient voltage instability; voltage stability; Capacitors; Load flow; Load modeling; Power system stability; Reactive power; Stability analysis; Torque; Voltage Collapse; Voltage Stability;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Reuse and Integration (IRI), 2012 IEEE 13th International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4673-2282-9
Electronic_ISBN :
978-1-4673-2283-6
Type :
conf
DOI :
10.1109/IRI.2012.6303050
Filename :
6303050
Link To Document :
بازگشت