A novel approach in automatic control based on the genetic algorithm in STATCOM for improvement power system transient stability

Static synchronous compensator (STATCOM) is a shunt-connected converter, which can affect rapid control of reactive flow in the transmission line by controlling the generated AC voltage. This article presents a new STATCOM voltage controller design for power system damping. The method of multiplicative uncertainty has been employed to model the variations of the operating points. The controller was tested for a number the step increase in torque reference. Voltage of capacitor STATCOM can be controlled by method of linear quadratic regulator (LQR). In this article, matrixes coefficients and dominant poles of closed loop transfer function are selected based on genetic algorithm method. The results show an improvement in voltage control response in a short response time.