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Optimal coordinated voltage control for power system voltage stability

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5 Author(s)
Wen, J.Y. ; Dept. of Electr. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China ; Wu, Q.H. ; Turner, D.R. ; Cheng, S.J.
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An optimal coordinated voltage controller (OCVC) is developed based on the spirit of model predictive control (MPC) method. The OCVC consists of three components, namely a predictor, a control candidate pool, and a selector. It has been used in secondary voltage control (SVC) to coordinate dissimilar control actions at different geographical locations in order to maintain desired voltage profiles in a global sense in emergencies. A single-stage Euler state predictor (SESP) is utilized, based on the system model, to predict voltage performance under selected control actions; the selection of the optimum control action from the pool is a complex optimization problem that is achieved by a pseudogradient evolutionary programming (PGEP) technique. Simulation results on a six-bus benchmark system and the New England 10-generator-39-bus system are given to show the potential of this method for online usage.

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Power Systems, IEEE Transactions on  (Volume:19 ,  Issue: 2 )