Distributed Power Flow Controller for Power System Oscillation Damping

This technique presents a brand new element inside the Flexible ac-transmission system (FACTS); family, known as distributed power-flow controller (DPFC). The DPFC comes from the unified power-flow controller (UPFC). The DPFC are often thought of as a UPFC with associate eliminated common dc link. The active power exchange between the shunt and series converters that is thru the common dc link within the UPFC is currently through the transmission lines at the third-harmonic frequency. The DPFC employs the distributed FACTS (D-FACTS) construct that is to use multiple small-size single-phase devices rather than the one large-size three-phase series converter within the UPFC. The massive range of series converters provides redundancy, thereby increasing the system dependableness. Because the D-FACTS converters area unit single-phase and floating with regard to the bottom, there is no high-voltage isolation needed between the phases. Consequently, the price of the DPFC system is not up to the UPFC. The DPFC has a similar management capability because the UPFC, that includes the adjustment of transmission line resistance, the transmission angle, and therefore the bus voltage. The principle and analysis of the DPFC area unit conferred during this work and therefore the corresponding experimental results that area unit disbursed in MATLAB simulink. The DPFC controller style in MATLAB Simulink and tested with unbalanced loading condition cable. The simulation results shows that the DPFC improve the system performance throughout unbalance loading conditions.