Improved synergetic excitation control for transient stability enhancement and voltage regulation of power systems

Decentralized multi-machine power system excitation control using continuous higher-order sliding mode technique

“…[13][14][15]. It can be seen that these states can restore to the stable values under the three excitation control approaches.…”

“…Choose positive constants a 1;i , a 2;i , a 3;i to make p 3 þ a 3;i p 2 þ a 2;i p þ a 1;i be Hurwitz polynomial. Then there exists q i 2 ð0; 1Þ, for any ' i 2 ð1 À q i ; 1Þ, the system states z 1;i , z 2;i , z 3;i in (13) converge to origin in finite time under auxiliary control law:…”

“…Meanwhile, since the power system is subject to variations like the changes in system configuration and the loading, it is a highly nonlinear dynamic system [7]. Therefore, many advanced control approaches, such as feedback linearization control [1,8], nonlinear predictive control [9], fuzzy control [10,11], neural networks [12], synergetic control [13] and chaotic optimization algorithm [14] have been designed to achieve high dynamic performance under large and unexpected contingencies. These advanced controls enable operating region to be extended and transient stability to be partly improved, yet the control systems are still sensitive to the plant parameter variations and external disturbances.…”

Robust decentralized power system controller design: Integrated approach

“…The problem of Automatic Voltage Control and Automatic Load frequency control has been extensively studied in the last decade by a number of researchers and many control design procedures have been reported in literature, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. The obtained results can be summarized as follows.…”

“…In [8] a new multi-objective function as an optimization problem is proposed for the coordination of power system stabilizer and static synchronous series compensator. In [9] proposes decentralized excitation controllers. Compared with conventional excitation controllers a parameter adaptation scheme is proposed to improve the transient stability of the closed loop system.…”