Nonlinear Robust Disturbance Attenuation Control Design for Static Var Compensator in Power System
Nonlinear Robust Disturbance Attenuation Control Design for Static Var Compensator in Power System
复制标题
电力系统静态无功补偿器非线性鲁棒干扰衰减控制设计
DOI:
10.1155/2013/747641
复制
发表时间:
2013-12
影响因子:
--
通讯作者:
Zhang, Siying
中科院分区:
文献类型:
--
作者:
Liu, Ting;Jiang, Nan;Jing, Yuanwei;Zhang, Siying
The problem of designing an adaptive backstepping controller for nonlinear static var compensator (SVC) system is addressed adopting two perspectives. First, instead of artificially assuming an upper bound or inequality scaling, the minimax theory is used to treat the external unknown disturbances. The system is insensitive to effects of large disturbances due to taking into account the worst case disturbance. Second, a parameter projection mechanism is introduced in adaptive control to force the parameter estimate within a prior specified interval. The proposed controller handles the nonlinear parameterization without compromising control smoothness and at the same time the parameter estimate speed is improved and the robustness of system is strengthened. Considering the short-circuit ground fault and mechanical power perturbation, a simulation study is carried out. The results show the effectiveness of the proposed control method.
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