Non-linear adaptive coordinated controller design for multimachine power systems to improve transient stability

2016 ◽  
Vol 10 (13) ◽  
pp. 3353-3363 ◽  
Author(s):  
Tushar Kanti Roy ◽  
Md Apel Mahmud ◽  
Weixiang Shen ◽  
Amanullah M.T. Oo
Keyword(s):  
Power Systems ◽  
Transient Stability ◽  
Controller Design ◽  
Non Linear

scholarly journals Analysis and design of different controllers for non-linear power systems

2013 ◽  
Vol 2 (3) ◽  
pp. 216
Author(s):  
Rekha Chaudhary ◽  
Arun Kumar Singh
Keyword(s):  
Power Systems ◽  
Power System ◽  
Feedback Linearization ◽  
Transient Stability ◽  
Voltage Regulation ◽  
Analysis And Design ◽  
Non Linear ◽  
Terminal Voltage ◽  
Initial Power ◽  
Direct Feedback

The objective of this paper is to design controller for non-linear power system using Direct Feedback Linearization technique to improve the transient stability and to achieve better voltage regulation. In case of fault in the power system, power angle and the terminal voltage are the parameters which are to be monitored. The simulation has been carried out taking different values of initial power angles and results were obtained for power angle and terminal voltage. To overcome the demerits of DFL-LQ optimal controller and DFL voltage regulator, co-ordinated controller is proposed. Simulation results show that transient stability of a power system under a large sudden fault has been improved by using co-ordinated controller.

A Nonlinear Excitation Controller Design Method for Terminal Voltage Regulation and Transient Stability Enhancement

2014 ◽  
Vol 15 (3) ◽  
pp. 279-290 ◽  
Author(s):  
Chongxin Huang ◽  
Kaifeng Zhang ◽  
Xianzhong Dai ◽  
Qiang Zang
Keyword(s):  
Power Systems ◽  
Transient Stability ◽  
Control Method ◽  
Controller Design ◽  
Design Method ◽  
Transient State ◽  
Voltage Regulation ◽  
Nonlinear Excitation ◽  
Generator Model ◽  
Terminal Voltage

Abstract This paper proposes a cascade control method to design a nonlinear excitation controller to guarantee the terminal voltage regulation and the transient stability. Firstly, a nonlinear automatic voltage regulator (NAVR) in the inner loop is designed to control the terminal voltage exactly. Secondly, the generator model including the NAVR is transformed to be a reduced one. Subsequently, based on the reduced generator model, the nonlinear power system stabilizer in the external loop is designed to enhance the transient stability of the power systems. Furthermore, a coordination strategy is presented to improve the performances of the terminal voltage regulation in the steady state and the stability in the transient state. Finally, the proposed method is verified by numerous simulation results.

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