DocumentCode :
585462
Title :
Comparisons between a Series and a shunt FACTS for tapping and power flow control in half-wavelength transmission lines
Author :
Aredes, Mauricio ; Dias, R.F.S.
Author_Institution :
Univ. Fed. do Rio de Janeiro, Rio de Janeiro, Brazil
fYear :
2012
fDate :
4-6 Sept. 2012
Abstract :
The half-wavelength transmission principle is an attractive solution for transmitting bulk power over long distances, particularly if the distances are in the range of 2300 to 2700 km, in case of 60-Hz power system frequency, or 2800 to 3200 km, in case of 50-Hz power system frequency. These long lines have to be compensated with series and shunt reactors and capacitors in such a way to tune the electrical length of the line to be equivalent to a little more than half the wavelength at the power system frequency. This paper presents two solutions to provide simultaneously power flow control through the half-wavelength line and also to derive a portion of this power to or from a local power system, without mischaracterizing its half-wavelength behaviour. It will be demonstrated that power flow control together with power tapping can be performed optimally by means of a series FACTS if the local system to be interconnected to the half-wavelength line is located in a range up to about 500 km from the sending or receiving end of the line. Contrarily, a shunt FACTS is more effective to perform both functionalities in case of applications in the central section of the line. Simulation results from a frequency dependent model of transmission line and the complete models of the series and the shunt FACTS devices were obtained in the PSCAD/EMTDC to demonstrate the feasibility of the proposed systems.
Keywords :
flexible AC transmission systems; load flow control; power transmission lines; PSCAD-EMTDC; bulk power transmission; capacitors; distance 2300 km to 2700 km; distance 2800 km to 3200 km; electrical length; frequency 50 Hz; frequency 60 Hz; frequency dependent model; half-wavelength transmission lines; local power system; power flow control; power system frequency; series FACTS devices; series reactors; shunt FACTS devices; shunt reactors; Load flow; Load flow control; Power transmission lines; Reactive power; Simulation; Voltage control; Flexible AC transmission systems; Load flow control; Reactive power control; Transmission lines; Voltage control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics and Motion Control Conference (EPE/PEMC), 2012 15th International
Conference_Location :
Novi Sad
Print_ISBN :
978-1-4673-1970-6
Electronic_ISBN :
978-1-4673-1971-3
Type :
conf
DOI :
10.1109/EPEPEMC.2012.6397334
Filename :
6397334
Link To Document :
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