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Enhancement of Power Quality and Mitigation of Harmonics by Using Distributed Interline Power Flow Controller
T.Vijaya Lakshmi Bhavani,  N.Nageswara Rao
This paper describes the power flow control in transmission line with Flexible AC Transmission System (FACTS) family, called Distributed Power Flow Controller (DPFC) and Distributed Interline Power Flow Controller (DIPFC). The DPFC is derived from the Unified Power Flow Controller (UPFC). The DPFC can be considered as UPFC with an eliminated common DC link, to enable the independent operation of the shunt and the series converters which enhances the effective placement of the series and shunt converters. The active power exchange between the two converters, which is through the common dc link in the UPFC, is now through the transmission lines at the third-harmonic frequency in the DPFC& DIPFC. DPFC & DIPFC is used to mitigate the voltage sag and swell as a power quality issue. The DPFC and DIPFC has the same control capability as the UPFC, which comprises the adjustment of the line impedance, the transmission angle, and the bus voltage. In DPFC three-phase series converter is divided to several single-phase series distributed converters through the transmission line and in DIPFC three single phase series converters are placed in between the two transmission lines. Modelling and principle of operation is presented in this paper To verify the DPFC principle two case studies are considered. Case (i) DPFC is placed in a single-machine infinite bus power system including two parallel transmission lines. Case (ii) Distributed Interline Power Flow Controller (DIPFC) is placed between the two parallel transmission lines of infinite bus. The case studies are simulated in MATLAB/ Simulink an the results validate the DIPFC has ability to improve the power quality then DPFC.
Unique Identification Number - IJEDR1602335Page Number(s) - 1905-1913Pubished in - Volume 4 | Issue 2 | June 2016DOI (Digital Object Identifier) -    Publisher - IJEDR (ISSN - 2321-9939)
Cite this Article
T.Vijaya Lakshmi Bhavani,  N.Nageswara Rao ,   "Enhancement of Power Quality and Mitigation of Harmonics by Using Distributed Interline Power Flow Controller "
, International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.4, Issue 2, pp.1905-1913, June 2016, Available at :http://www.ijedr.org/papers/IJEDR1602335.pdf