Dynamic control and performance of a unified power flow controller for stabilizing an AC transmission system

This paper presents dynamic control and performance of a unified power flow controller (UPFC) intended for installation on a transmission system consisting of two sets of three-phase transmission lines in parallel. When no UPFC is installed, interruption of either three-phase line due to a fault reduces an active power flow to half, because the line impedance becomes double before the interruption. Installing the UPFC makes it possible to control an amount of active power flowing through the transmission system. The validity of the theoretical analysis developed in this paper is verified by experiments using a 10-kVA laboratory setup, as well as a computer simulation.

[1]  Hirofumi Akagi,et al.  Control and analysis of a unified power flow controller , 1998 .

[2]  Laszlo Gyugyi,et al.  AEP UPFC project: installation, commissioning and operation of the /spl plusmn/160 MVA STATCOM (phase I) , 1998 .

[3]  Hirofumi Akagi,et al.  Analysis and design of a DC voltage-controlled static VAr compensator using quad-series voltage-source inverters , 1996 .

[4]  Hirofumi Akagi,et al.  Transient analysis of a unified power flow controller and its application to design of the DC-link capacitor , 2001 .

[5]  Ronald G. Harley,et al.  An improved control scheme for a series capacitive reactance compensator based on a voltage source inverter , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[6]  Boon-Teck Ooi,et al.  Mid-point siting of FACTS devices in transmission lines , 1997 .

[7]  A. Prudenzi,et al.  A Model of Large Load Areas for Harmonic Studies in Distribution Networks , 1997, IEEE Power Engineering Review.

[8]  T. M. Undeland,et al.  Dynamic control of a unified power flow controller , 1996, PESC Record. 27th Annual IEEE Power Electronics Specialists Conference.

[9]  L. Gyugyi,et al.  The unified power flow controller: a new approach to power transmission control , 1995 .

[10]  Mehrdad Ghandhari,et al.  Improving power system dynamics by series-connected FACTS devices , 1997 .

[11]  Boon-Teck Ooi,et al.  Unified power flow controller (UPFC) based on chopper stabilized multilevel converter , 1997, PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972.

[12]  Laszlo Gyugyi,et al.  Unified power-flow control concept for flexible AC transmission systems , 1992 .

[13]  Laszlo Gyugyi,et al.  AEP unified power flow controller performance , 1999 .