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With the increase of wind generation penetration in power systems, it becomes more and more important to study its impact on power systems characteristics. The accurate dynamic modeling of wind plants is critical for the grid planning and operating studies. The field test of a three phase short circuit fault at a 35kV busbar in a wind farm in Zhangjiakou Area was performed and a series of corresponding...
Because of the limitation of models in existing power system simulation softwares, only frequency fluctuations in a small range can be simulated in such environment. Relative bigger frequency fluctuations in islanding systems can not be simulated in them. To solve that problem, the OPC control logic of generating units was studied, and was simplified properly. The speed control model and protection...
This paper presents a novel current control method for three-phase APF based on switched affine system quadratic stability. In this paper, three-phase APF is modeled as switched affine system. The three-phase grid voltages are divided into 12 regions, each region has chosen a combination of switching subsystems according to the condition for quadratic stability. By selecting the common Lyapunov function...
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