Static VAR Controller based Power Flow Control in Distribution System by GA

摘要

With increase in load, any transmission, distribution and generating model suffers from disturbances. These disturbances effect the overall stability of the system. Criterias like voltage profile, power flows, losses tell us about the state of the system under study. Load flow analysis of the system under study is capable of providing the insight of the system. The Emergence of FACTS device is really a step forward for the flexible control or Power System Operations. FACTS is the name given to the application of the power electronics devices to control power flows and other quantities in the power system .But when it comes to implementation stage, optimizing the location becomes a great concern because of the high cost involved with FACTS devices especially converter like SVC, STATCOM etc. Static VAR Compensator (SVC) is a power quality device, which employs power electronics to control the reactive power flow of the system where it is connected. It is able to provide fast-acting reactive power compensation on electrical systems. The Static VAR compensator is designed to decrease the disturbances caused by changes in reactive power and voltage fluctuations in normal operation of transmission lines and industry distribution systems. Disturbances may be caused by line switching, line faults, non-linear components such as thyristor controls and rapidly varying active and reactive loads. These disturbances result in harmonics that load the supply network, and cause voltage fluctuations. Varying loads can also create disturbances in the form of phase unbalance and voltage flicker phenomenon as well as create a need of additional reactive power. The Static