Analysis and enhancement of small-signal stability on DFIG-based wind integrated power system through the optimal design of linear quadratic regulator

被引:9
作者
Kumar, Dipesh [1 ]
Chatterjee, Kalyan [1 ]
机构
[1] ISM, IIT, Dept Elect Engn, Dhanbad 826004, Bihar, India
关键词
optimisation; wind power plants; power generation control; particle swarm optimisation; dynamic response; control system synthesis; linear quadratic control; asynchronous generators; eigenvalues and eigenfunctions; small-signal stability; DFIG-based; power system; optimal design; system configurations; robustness; standard proportional-integral; ABC-LQR controller; dynamic response characteristics; performance index; optimal weighting matrices; artificial bee colony-based swarm optimisation technique; state-space representation; wind energy system; quadratic regulator controller; sudden disturbance; transient disturbance; WIPS; doubly fed induction generator-based; dynamic behaviour; linear quadratic regulator; ENERGY-CONVERSION; TURBINES; LOAD;
D O I
10.1049/iet-rpg.2018.6095
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This study analyses the dynamic behaviour of a doubly fed induction generator (DFIG)-based wind integrated power system (WIPS) resulting from a major disturbance. The effects of transient disturbance on WIPS are examined without and with a controller in terms of performance and stability of the system. To enhance the performance of WIPS after a sudden disturbance, an optimally designed linear quadratic regulator (LQR) controller is applied to the system. The wind energy system is described in state-space representation, whose states and outputs are taken as feedback to the controller for improving their dynamic response. An artificial bee colony (ABC)-based swarm optimisation technique is used to evaluate the optimal weighting matrices of the LQR controller in parallel with minimising the performance index and dynamic response characteristics of the system. The effectiveness of the proposed ABC-LQR controller in WIPS is verified by comparing their simulation and numerical results with standard proportional-integral and LQR controllers. It indicates that the proposed controller provides better enhancement of dynamic response as compared with other controllers in terms of performance index and dynamic response characteristics. Moreover, the robustness and stability of various system configurations are tested by the eigenvalue analysis.
引用
收藏
页码:628 / 639
页数:12
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