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The introduction of distributed generation has affected power systems. The hosting capacity is used to determine the amount of generation that can be connected to the system without deteriorating its performance. This paper proposes the analysis of the hosting capacity regarding the inclusion of wind turbines considering different background distortions. A case study is performed on a Brazilian university...
This paper aims at presenting the development of patient-specific anatomical models with a focus on the pelvis region supporting the femoral nerve block. Magnetic resonance imaging (MRI) and virtual physiological human (VPH) model are used for image registration, and a library of segmentation and registration algorithms was compiled for scaling, registration, and segmentation that supports the user...
This paper introduces the Opportunistic Channel Aggregation MAC protocol (OCA-MAC) for wireless ad hoc networks. OCA-MAC allows opportunistic MAC-level channel aggregation per frame transmission. To accomplish that, OCA-MAC is built on top of the IEEE 802.11 DCF MAC with a secondary radio interface for opportunistic access over an alternative channel. OCA-MAC avoids the use of extra control channel...
This paper proposes a model based predictive controller for direct power control of DFIG. The control law is derived by optimization of an objective function that considers the control effort and the difference between the predicted outputs (active and reactive power) and the specific references, with predicted outputs calculated using a linearized state-space model. Because the generator leakage...
This paper presents a method to automatically detect faults in transmission lines by using thermographie images. It involves the acquisition of infrared images over a network and its processing. Since the method is intented to be used embedded in a robot, low demands on processing power are required, in order to enable inspection on large extensions of transmission lines. The automatic inspection...
Summary form only given. This paper describes a novel generation rescheduling method to reduce the generator rotor shaft impacts induced by transmission loop closures. The rotor shaft impact constraints, at the instant of transmission loop closure, are explicitly modeled into an interior point optimal power flow. This method represents a considerable improvement on the conventional redispatch for...
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