Title :
Use of local and remote information in POD control of a VSC-HVdc
Author :
Latorre, H.F. ; Ghandhari, M. ; Söder, L.
Author_Institution :
Dept. of Electr. Power Syst., R. Inst. of Technol., Stockholm, Sweden
Abstract :
VSC-HVDCs have shown to be effective means to increase margins of stability in transmission systems. An appropriate control strategy and a correct selection of input signals allow VSC-HVDCs to enhance transient stability, damp power oscillations and provide voltage support in a significant way. In this paper the use of local and remote information in control strategies for POD in the control of a VSC-HVDC are studied. Two main control strategies are considered one of them based on linear control and the other one based on nonlinear control. As local signals current through transmission lines and frequency at connecting nodes of the VSC-HVDC are used. Rotor angles and speed of the generators are used as remote signals.
Keywords :
HVDC power convertors; HVDC power transmission; damping; nonlinear control systems; oscillations; power control; power system transient stability; power transmission control; POD control; VSC-HVDC systems; linear control; local information; nonlinear control; power oscillation damping; remote information; rotor angles; transient stability; transmission systems; voltage support; Control systems; Controllability; Converters; Damping; Observability; Power conversion; Power system reliability; Power system stability; Signal generators; Voltage control; POD; Remote Information; Transient Stability; VSC-HVdc;
Conference_Titel :
PowerTech, 2009 IEEE Bucharest
Conference_Location :
Bucharest
Print_ISBN :
978-1-4244-2234-0
Electronic_ISBN :
978-1-4244-2235-7
DOI :
10.1109/PTC.2009.5282037
