TY - JOUR
T1 - Non-linear adaptive coordinated controller design for multimachine power systems to improve transient stability
AU - Roy, Tushar Kanti
AU - Mahmud, Md Apel
AU - Shen, Weixiang
AU - Oo, Amanullah M.T.
N1 - Publisher Copyright:
© The Institution of Engineering and Technology 2016.
PY - 2016/10/1
Y1 - 2016/10/1
N2 - Based on an adaptive backstepping approach, this study proposes a new coordinated control design where the coordination is done between the excitation controller of synchronous generators and steam-valve controller of turbine-governor systems in a multimachine power system by considering the critical parameters of both systems as unknown. This new coordinated control scheme can ensure the stability of multimachine power systems through the formulation of control Lyapunov functions (CLFs) and derive the adaptation laws to estimate the unknown parameters in the design process to prove the convergence of power systems using CLFs. The performances of the proposed control scheme are evaluated on a two-area four-machine 11-bus power system under different operating conditions such as three-phase short-circuit faults along with changes in loads. Simulation results are then compared with those of a similar controller where there is no coordination between the excitation and steam-valve controllers as well as with a coordinated sliding-mode controller. The results clearly show the effectiveness and superiority of the proposed control scheme.
AB - Based on an adaptive backstepping approach, this study proposes a new coordinated control design where the coordination is done between the excitation controller of synchronous generators and steam-valve controller of turbine-governor systems in a multimachine power system by considering the critical parameters of both systems as unknown. This new coordinated control scheme can ensure the stability of multimachine power systems through the formulation of control Lyapunov functions (CLFs) and derive the adaptation laws to estimate the unknown parameters in the design process to prove the convergence of power systems using CLFs. The performances of the proposed control scheme are evaluated on a two-area four-machine 11-bus power system under different operating conditions such as three-phase short-circuit faults along with changes in loads. Simulation results are then compared with those of a similar controller where there is no coordination between the excitation and steam-valve controllers as well as with a coordinated sliding-mode controller. The results clearly show the effectiveness and superiority of the proposed control scheme.
KW - coordinated sliding mode controller
KW - adaptive control
KW - nonlinear control systems
KW - control system synthesis
KW - power system transient stability
KW - control nonlinearities
KW - synchronous generators
KW - turbogenerators
KW - power system control
KW - Lyapunov methods
KW - variable structure systems
KW - valves
KW - nonlinear adaptive coordinated controller design
KW - two-area four-machine 11-bus power system
KW - power systems convergence
KW - CLF
KW - control Lyapunov function
KW - multimachine power system stability
KW - turbine-governor system steam-valve
KW - synchronous generator excitation controller
KW - adaptive backstepping approach
KW - transient stability improvement
UR - http://www.scopus.com/inward/record.url?scp=84990020619&partnerID=8YFLogxK
U2 - 10.1049/iet-gtd.2016.0377
DO - 10.1049/iet-gtd.2016.0377
M3 - Article
AN - SCOPUS:84990020619
VL - 10
SP - 3353
EP - 3363
JO - IET Generation, Transmission and Distribution
JF - IET Generation, Transmission and Distribution
SN - 1751-8687
IS - 13
ER -