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A new decentralized nonlinear voltage controller for multimachine power systems

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3 Author(s)
Chunlei Zhu ; Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore ; Rujing Zhou ; Yonyi Wang

A new decentralized nonlinear voltage controller for multimachine power systems is proposed in this paper. The nonlinear n-machine power system model is first linearized and decoupled over the whole operating region by using the direct feedback linearization (DFL) technique. Then a decentralized nonlinear voltage controller is developed by use of the robust control theory. Performance of the proposed controller in a three-machine example system is simulated. The simulation results show that both voltage regulation and system stability enhancement can be achieved with this proposed controller regardless of the system operating conditions

Published in:

IEEE Transactions on Power Systems  (Volume:13 ,  Issue: 1 )