Performance of custom power devices for power quality improvement

During Last decade power quality problems has become more complex at all level of power system. Recently, the Power electronics controllers are gaining concern to provide the quality of power for both power suppliers and consumers. Nowadays a new concept of custom power is used for customer's satisfaction. This paper presents a comprehensive survey of custom power devises in order to improve quality of power. Custom power devices (CPDs) including active voltage conditioner (AVC), dynamic voltage restorer (DVR), and distribution static synchronous compensator (D-STATCOM) are simulated on the modified IEEE-16 bus radial distribution system using Matlab/Simulink software to investigate performance efficiency of each device under various Power quality disturbances including voltage sags, voltage interruption, and harmonic distortions. The simulation results demonstrate that the effectiveness of each device to compensate different types of power quality disturbances depends on the device's arrangement and characteristics.