DocumentCode :
1361006
Title :
An improved voltage control on large-scale power system
Author :
Vu, H. ; Pruvot, P. ; Launay, C. ; Harmand, Y.
Author_Institution :
Study & Res. Div., Electr. de France, Clamart, France
Volume :
11
Issue :
3
fYear :
1996
fDate :
8/1/1996 12:00:00 AM
Firstpage :
1295
Lastpage :
1303
Abstract :
To achieve a better voltage-VAr control in the electric power transmission system, different facilities are used. Generators are equipped with automatic voltage regulators to cope with sudden and random voltage changes caused by natural load fluctuations or failures. Other devices like capacitors, inductors, transformers with on load tap changers are installed on the network. Faced with the evolution of the network and operating conditions, electricity utilities are more and more interested in overall and coherent control systems, automatic or not. These systems are expected to co-ordinate the actions of local facilities for a better voltage control (more stable and faster reaction) inside different areas of the network in case of greater voltage and VAr variations. They afford a better use of existing reactive resources. Also, installation of new devices can be avoided allowing economy of investment. With this in mind, EDF has designed a system called Co-ordinated Secondary Voltage Control (CSVC). It is an automatic closed loop system with a dynamic of a few minutes. It takes into account the network conditions (topology, loads), the voltage limits and the generator operating constraints. This paper presents improvements which allow the CSVC to control the voltage profile and different kinds of reactive means on a large-scale power system, Furthermore, this paper presents a solution to spread out investment costs over several years, considering a deployment gradually extended
Keywords :
closed loop systems; economics; investment; power system control; reactive power control; voltage control; voltage regulators; Co-ordinated Secondary Voltage Control; VAr variations; automatic closed loop system; automatic voltage regulators; capacitors; electric power transmission system; inductors; investment costs; large-scale power system; natural load fluctuations; on load tap changers; random voltage changes; reactive resources; sudden voltage changes; transformers; voltage profile; Capacitors; Control systems; Fluctuations; Investments; Large-scale systems; Power system control; Power system dynamics; Power systems; Regulators; Voltage control;
fLanguage :
English
Journal_Title :
Power Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8950
Type :
jour
DOI :
10.1109/59.535670
Filename :
535670
Link To Document :
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