Minimization of THD and Transmission Losses Using GA SVC controller

Distribution systems are faced with power quality problems such as low power factor, harmonic distortion, losses and unreliability. Static varcompensator (SVC) such as thyristorcontrolled reactor (TCR) is usually used for balancing reactive powers of all the three phases independently bycontrolling the firing angle of thyristors. TCRs that are installed in distribution lines compensate unbalanced reactive power but while doing so the TCR injects harmonic currents of odd order into the point of common coupling. This paper proposes a new procedure of controlling the injected harmonics of TCR to the power system by using genetic algorithm (GA). In addition three objective functions are defined in order to optimize the amount of SVC harmonic injection, PF and transmission losses simultaneously. In this paper a trade of between different aims of installing SVC is studied. The results of optimized thyristors firing angles are illustrated through the MATLAB software.

کلیدواژه ها:

SVC ، TCR ، THD ، Reactive power ، Genetic Algorithm ، Power Factor (PF