Observational linearization and tracking objective excitation control strategy based on phasor measurement unit |
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Authors: | Qiu Xiaoyan Li Xingyuan and Wang Xiaoyan |
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Affiliation: | (1) School of Electrical Engineering and Information, Sichuan University, Chengdu, 610065, China |
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Abstract: | To improve the transient stability of multimachine power systems, observational linearization and tracking objective excitation
control laws were derived from the phasor measurement unit (PMU), observational linearization, and tracking objective control
theory based on synchronized coordinates and reference generator coordinates. The control strategies utilized real-time state
variables obtained by PMU to linearize the state equations of the system, and then the linear optimal control strategy was
used to design excitation controllers. The inaccuracy of the local linearization method and the complexity of the system models
designed in the exact linearization method for nonlinear systems were avoided. Therefore, the control strategies were applied
in real time. Simulation results show that the proposed method can improve the transient stability of power systems more efficiently
than nonlinear optimal excitation control.
Translated from Journal of Sichuan University, 2006, 38(2): 146–150 译自: 四川大学学报 (工程科学版)] |
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Keywords: | PMU nonlinear optimal excitation control observational linearization tracking objective control |
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