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Detailed analysis and experimental results of the control system of a UPFC

P. García-González, A. García-Cerrada

This paper explains the decoupled control of the power flow through a transmission line using a PWM based Unified Power Flow Controler (UPFC). The dynamic model of the UPFC has been developed using the space-vector representation of the instantaneous three-phase variables. The Park´s transformation and the reference frame selected reduce the control of the real and reactive-power flows to the control of the d- and q-axis currents, respectively. The proposed control scheme produces fast and decoupled response of the real and the reactive-power flow through a transmission line. It also achieves tight control of the d.c.-link capacitor voltage, thanks to the careful coordination between the control of the series and shunt compensators of the UPFX. A 15 kVA prototype with 750 Hz switching frequency has been built to illustrate the main contributions. Experiemental results agree closely with the theoretical analysis.


Palabras clave: PWM invertors; compensation; load flow control; power transmission control; power transmission lines; reactive power control


IEE Proceedings-Generation Transmission and Distribution. Volumen: 150 Numero: 2 Páginas: 147-154

Índice de impacto JCR y cuartil Scopus: 0.341 (2003); 0.868 (2008).

Referencia DOI: DOI icon 10.1049/ip-gtd:20030026    

Publicado en papel: Marzo 2003.


    Líneas de investigación:
  • *Electrónica de Potencia y Sistemas de Control

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