Multiobjective reactive power planning considering the uncertainties of wind farms and loads using Information Gap Decision Theory

AbstractIn this study, an auxiliary damping controller based on a robust controller considering the active and reactive power control loops for a doubly-fed induction generator for wind farms is proposed. The presented controller is able to improve the inter-area oscillation damping. In addition, the proposed controller applies only one accessible local signal as the input; however, it can improve the inter-area oscillation damping and, consequently the system stability for the various working conditions and uncertainties. The oscillatory modes of the system are appointed using the linear analysis. Then, the controller’s parameters are determined using the robust control approaches ($${H}_{\infty }/{H}_{2})$$ H ∞ / H 2 ) with the pole placement and linear matrix inequality method. The results of the modal analysis and time-domain simulations confirm that the controller develops the inter-area oscillation damping under the various working conditions and uncertainties.

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Optimal operation strategies of multi-energy systems integrated with liquid air energy storage using information gap decision theory

International Journal of Electrical Power & Energy Systems ◽

10.1016/j.ijepes.2021.107078 ◽

2021 ◽

Vol 132 ◽

pp. 107078

Author(s):

Caixin Yan ◽

Chunsheng Wang ◽

Yukun Hu ◽

Minghui Yang ◽

Hao Xie

Keyword(s):

Energy Storage ◽

Decision Theory ◽

Energy Systems ◽

Optimal Operation ◽

Information Gap

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Simulation Study on Dynamic Reactive Power Compensation of Grid-Connected Wind Farms

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.756-759.4171 ◽

2013 ◽

Vol 756-759 ◽

pp. 4171-4174 ◽

Cited By ~ 1

Author(s):

Xiao Ming Wang ◽

Xing Xing Mu

Keyword(s):

Voltage Stability ◽

Wind Farm ◽

Reactive Power ◽

Wind Farms ◽

Reactive Power Compensation ◽

Wind Speeds ◽

Wind Generators ◽

Reactive Compensation ◽

Farm Model ◽

Set Up

With the Asynchronous wind generators as research object, this paper analyzes the problems of the voltage stability and the generation mechanism of the reactive power compensation during the wind farms connected operation. For paralleling capacitor bank has shown obvious defects, therefore this paper employs dynamic reactive power compensation to improve reactive characteristics of grid-connected wind farms. With the influences of different wind disturbances and grid faults on wind farms, wind farm model is set up and dynamic reactive power compensation system and wind speeds are built in the Matlab/Simulink software, The simulation result shows that they can provide reactive power compensation to ensure the voltage stability of the wind farms. But STATCOM needs less reactive compensation capacity to make sure the voltage and active power approaching steady state before the faults more quickly, Therefore STATCOM is more suitable for wind farms connected dynamic reactive power compensation.

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