Delay-dependent H∞robust control for large power systems based on two-level hierarchical decentralised coordinated control structure

2013 ◽  
Vol 44 (2) ◽  
pp. 329-345 ◽  
Author(s):  
Chun-Xia Dou ◽  
Zhi-Sheng Duan ◽  
Xing-Bei Jia
Keyword(s):  
Robust Control ◽  
Power Systems ◽  
Control Structure ◽  
Coordinated Control ◽  
Large Power ◽  
Delay Dependent

RobustH∞Damping Control of Multi-FACTS Devices for Stability Enhancement of Power Systems with Signal’s Time Delay

2015 ◽  
Vol 19 (2) ◽  
pp. 239-246
Author(s):  
Fang Liu ◽  
◽  
Min Wu ◽  
Danyun Li ◽  
Yong He ◽  
...  
Keyword(s):  
Time Delay ◽  
Robust Control ◽  
Power Systems ◽  
Area Measurement ◽  
Measurement Systems ◽  
Damping Control ◽  
Facts Devices ◽  
Stability Enhancement ◽  
Delay Dependent ◽  
Damping Controller

In this paper, a robustH∞damping controller of multi-FACTS device for a power system is developed with considering the time delay of the remote feedback signals transmitted by wide-area measurement systems (WAMS). A free-weighting matrices method based on linear control design approach is presented to design the robustH∞damping controller to improve the dynamical performance of power systems. Firstly, the linearized reduced-order plant model is established, which efficiently considers the signal’s time delay and disturbance. Then, the design of multi-FACTS robustH∞damping controller is formulated as the standard control problem on delay-dependent state-feedback robust control based on the robust control theory. Finally, the simulation tests are carried out on the 2-area 4-machine power systems. Satisfactory test results verify the correctness of the proposed damping controller.

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