Electric traction trains are huge non-linear single-phase loads influencing adversely on power quality parameters on the grid side. Hybrid power quality conditioner (HPQC) has been utilized to compensate current unbalance, harmonics, and low power factor in the co-phase traction system simultaneously. By incrementing the traction load, the rating of the HPQC increases and may constraints its ap...

The UPFC can provide simultaneous control of all basic power system parameters ( transmission voltage, impedance and phase angle). The controller can fulfill functions of reactive shunt compensation, series compensation and phase shifting meeting multiple control objectives. From a functional perspective, the objectives are met by applying a boosting transformer injected voltage and a exciting ...

Harmonics is one of the major power quality problems for power systems. The harmonics can be eliminated by power filters such as passive, active, and hybrid. In this study, a new passive filter configuration has been improved in addition to the existing passive filter configurations. Conventional hybrid passive filters are not successful to compensate rapidly changing reactive power demand. The...

Many industrial installations in developing countries start-up as small factories, without regard for the need of compensation reactive power, leading to significant financial losses long term. By improving power factor, customer can reduce its demand and potentially increase efficiency their equipment. A PIC microcontroller is used switch capacitor banks compensate power. In order determine si...

Abstract— The active power filters eliminates the harmonic distortion caused by non-linear loads and improves the filtering efficiency performance when compared with the passive filters. This paper inspects about the analysis and simulation of a three phase four wire shunt active power f ilter under unbalanced and distorted load conditions. Current harmonic compensation is achieved by the imple...