Title :
A strategic for voltage coordinated control to improve system operation
Author :
Lemos, F.A.B. ; Werberich, L.C. ; Freitas, J.S. ; da Rosa, M.A.
Author_Institution :
Dept. of Electr. Eng., Pontifical Catholic Univ. of RS, Brazil
Abstract :
In this paper, a study of the possibilities of the corrective and emergency effects of coordinated secondary voltage control of transmission and distribution systems is presented. They control load tap changing transformer (ULTC) positions to ensure that voltage and loading constraints are satisfied under normal and emergency conditions such as the control strategies to minimise system losses and reactive power interchanges and provide voltage stability and security. In addition, a special emergency mode of operations based on blocking and unblocking of under load tap changing (ULTC) into internal distribution system is also proposed. Preliminary results the benefits of application of CSVC are illustrated in a real system of the distribution utility in the South of Brazil
Keywords :
control system analysis; control system synthesis; losses; power system control; power system security; power system stability; power transformers; voltage control; Brazil; distribution systems; emergency conditions; load tap changing transformer positions; loading constraints; normal conditions; power system losses; reactive power interchanges; transmission systems; under load tap changing; voltage constraints; voltage coordinated power system control; Automatic control; Automatic voltage control; Automation; Centralized control; Control systems; Power system reliability; Power system security; Reactive power control; Stability; Voltage control;
Conference_Titel :
Power Tech Proceedings, 2001 IEEE Porto
Conference_Location :
Porto
Print_ISBN :
0-7803-7139-9
DOI :
10.1109/PTC.2001.964779
