DocumentCode :
2487058
Title :
Dynamic Voltage Stability Improvement using coordinated control of dynamic VAR-sources
Author :
Radman, Ghadir ; Pama, Alex ; Powell, Jeff ; Gao, David
Author_Institution :
Tennessee Tech Univ., Cookeville
fYear :
2007
fDate :
19-24 Aug. 2007
Firstpage :
1
Lastpage :
6
Abstract :
Fast voltage collapse is a new phenomenon in today´s stressed power system. To prevent fast voltage collapse sufficient amount of compensation from dynamic reactive sources such as generator, condenser, SVC and STATCOM are needed. This paper presents a new controller (called power system voltage stabilizer or PSVS) for dynamic voltage stability enhancement of power systems and/or prevention of fast voltage collapse. The PSVS is implemented through coordinated control of dynamic reactive sources. For implementation of a PSVS, the given power system is first divided into several small voltage control areas (VCAs) each of which include several loads and several dynamic reactive sources. Then for each VCA, a dynamic voltage stability index (DSVI) is defined that includes the voltage deviations of all load buses within the area. Finally, a coordinated control of all dynamic reactive sources of the area is used to improve the dynamic voltage index during voltage emergencies. The proposed method is applied for a modified IEEE 14 - bus system and tested for severe voltage emergency. The simulation results obtained from PSS/E software package indicate significant improvement in dynamic voltage stability of the system.
Keywords :
power system control; power system dynamic stability; reactive power control; voltage control; DSVI; IEEE 14-bus system; PSVS; VCA; dynamic VAR-sources; dynamic voltage stability; fast voltage collapse; power system voltage stabilizer; voltage control area; Automatic voltage control; Control systems; Power system control; Power system dynamics; Power system stability; Power systems; Software packages; Static VAr compensators; System testing; Voltage control; Dynamic voltage stability; KEY WORDS; and power system voltage stabilizer; dynamic reactive sources; dynamic voltage control; fast voltage collapse;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability, 2007 iREP Symposium
Conference_Location :
Charleston, SC
Print_ISBN :
978-1-4244-1519-9
Electronic_ISBN :
978-1-4244-1519-9
Type :
conf
DOI :
10.1109/IREP.2007.4410541
Filename :
4410541
Link To Document :
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