The transmission line parameters vary with the change of temperature, which has a significant impact on power system state estimation (SE). Based theory electro-thermal coordination (ETC), this paper proposes two ETC-SE approaches consideration temperature. heat balance equation (HBE) is combined conventional weighted least square SE for establishing an model. Moreover, augmented Jacobian appro...

In this paper, a consistent pattern with the optimal coordinated design of PSS and SSSC controller to improve the damping of low frequency oscillations is shown. In this design, sensing and signal transmission time delays are considered as effectiveness parameters. The design problem has been considered an optimization problem and biogeography-based optimization (BBO) algorithm is used for sear...

This study inspects the optimum location of STATCOM device in long transmission line to acquire the maximum power system transient stability improvement. STATCOM is a kind of prominent and effective shunt FACTS device which is used in power system to enhance the power system stability and to regulate the line voltage. When it has been placed at the center point of a transmission line, play a ke...