Complete, integrated and simultaneously design for STATCOM fuzzy controller with variable length genetic algorithm for voltage profile improvement

The purpose of this paper is to study a new method to design the fuzzy controller to control STATCOM for promotion voltage profile. Because of the importance of power quality in industrial bus bars when the loads are numerous, the classic methods of control (because of inherent time delay) can not been used. Therefore the fuzzy controller has been developed to for compensation because of the fast and stable response to voltage alterations. Regarding the complexity of tuning of fuzzy controller, using the trial and error method to tune them is not acceptable; however the updated numerical methods should be used. To tune fuzzy controller, a professional personpsilas information or the systempsilas exact specific equation is needed and if this information is not available we should use the new methods of numerical methods. So we apply genetic algorithm that is a powerful researcher and in a determinant population for each person search the best point and promote these point simultaneously.