نتایج جستجو برای: wide area measurement

تعداد نتایج: 1314804  

Journal: :Hypertension 2002
Saul G Myerson Hugh E Montgomery Michael J World Dudley J Pennell

The study of left ventricular (LV) hypertrophy is hindered by problems with LV mass measurement by echocardiography. Both the M-mode and 2D area-length formulas for calculating LV mass assume a fixed geometric shape, which may be a source of error. We examined this hypothesis by using cardiovascular magnetic resonance images to eliminate the confounding effects of acoustic access and image qual...

Journal: :Review of Economics and Statistics 2012

R. Asghari S. B. Mozafari T. Amraee

Unlike the existing views that was introduced the existence of delay caused by the transmission of wide area measurement system data (WAMS) into the controllers input of the power oscilation damping (POD) by communication networks as a reason for poor performance of the POD controllers. This paper shows that the presence of time delay in the feedback loop may improve the performance of a POD co...

2014
Mahmoud M. Elmesalawy Ahmed A. Shetaya Ahmed H. Soliman

Egypt is moving towards smart grid infrastructures to enable efficient bidirectional power supply with reduced carbon footprint. The target smart grid will feature distributed energy generation with renewable energy systems. With the improvement of wind power technology in Egypt, increase of wind power capacity, the impact of wind power on the grid has become an important research topic as well...

2010
Yuwa Chompoobutrgool Luigi Vanfretti Mehrdad Ghandhari

Power system oscillation damping remains as one of the major concerns for secure and reliable operation of large power systems, and is of great current interest to both industry and academia. The principal reason for this is that the inception of poorly-damped low-frequency inter-area oscillations (LFIOs) when power systems are operating under stringent conditions may lead to systemwide breakup...

2009
Lisa L. Arnold Paul Zandbergen Karl Benedict

OF THESIS Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science

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