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Operation of the unified power flow controller (UPFC) under practical constraints

Operation of the unified power flow controller (UPFC) under practical constraints,10.1109/61.660949,IEEE Transactions on Power Delivery,C. D. Schauder

Operation of the unified power flow controller (UPFC) under practical constraints   (Citations: 95)
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The UPFC is the most versatile and complex power electronic equipment that has emerged for the control and optimization of power flow in electrical power transmission systems. It offers major potential advantages for the static and dynamic operation of transmission lines, but it brings with it major design challenges, both in the power electronics and from the perspective of the power system. As the UPFC transitions from concept to full-scale power system implementation, the control and protection of this sophisticated equipment are of primary concern. This paper describes the basic control, sequencing and protection philosophies that govern the operation of the UPFC, subject to the practical constraints encountered in an actual high power installation. The operation of the UPFC is illustrated with representative results from a TNA study, undertaken jointly by the Electric Power Research Institute (EPRI), Western Area Power Administration (WAPA) and Westinghouse Science and Technology Center (STC).
Journal: IEEE Transactions on Power Delivery - IEEE TRANS POWER DELIVERY , vol. 13, no. 2, pp. 630-639, 1998
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    • ...UPFC has been investigated through the literature [1-24]...
    • ...In [13], the basic control sequencing and protection philosophies that govern the operation of the UPFC subject to the practical constraints in high power installation was presented...

    Sijoy Raphaelet al. Unified power flow controller for low voltage ride through capability ...

    • ...Additionally, the scheme also considers the fact that depending on the magnitude of the fault current, the UPFC may change its status to bypass operating mode [10], where series voltage injection is zero...
    • ...Shunt controller may or may not be connected, if it is intended to provide a voltage regulation feature [10]...

    K. Seethalekshmiet al. Synchrophasor Assisted Adaptive Reach Setting of Distance Relays in Pr...

    • ...Some practical applications of UPFC are reported in [2], [3]...
    • ...The impact of these two operating states on the system reliability are much smaller than the case when the UPFC operates in the up state (i.e., components are operational [2])...
    • ...Fig. 5 shows that PB is directly connected to B4 and L48 is connected between BS and B8. The UPFC is assumed to have two identical 160 MVA inverters interconnected by a DC link [2]...

    A. Rajabi-Ghahnaviehet al. UPFC for Enhancing Power System Reliability

    • ...UPFC is capable of providing active and reactive power control, as well as adaptive voltage magnitude control [7]...
    • ...In other words, the UPFC does not consume any active power [1-2, 7-8]...
    • ...In this case, the shunt converter operates as a stand-alone STATCOM, and the series converter as a SSSC [7]...

    Bo Huet al. Reliability evaluation of bulk power systems incorporating UPFC

    • ...Among them, The Unified Power Flow Controller (UPFC) is a device that can simultaneously control the voltage magnitudes at the sending end and the active and reactive power flows at the receiving end bus [3]...
    • ...The UPFC (unified power flow controller) is a FACTS device able to control simultaneously active power flows, reactive power flows, and voltage magnitude at the UPFC terminals [3]...

    Abdelaziz Laifaet al. Optimal placement and parameter settings of unified power flow control...

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