In this paper, the modeling for a complete scenario of a proposed wide area measurement system (WAMS) based on synchronized phasor measurement units (PMUs) technology with the access of a broadband communication capability is presented. The purpose is to increase the overall system efficiency and reliability for all power stages via significant dependence on WAMS as distributed intelligence age...

Direct numerical simulations at two friction Reynolds numbers (550 and 1000) have been performed to explore the statistical behaviors of wall-attached motions (WAMs) in open- closed-channel flows (OCFs CCFs). To fully capture largest energetic WAMs, superlarge domain sizes are employed (24–48 π h along streamwise direction with being height OCFs). Based on analysis linear coherence spectrum, bo...

— Wide Area Monitoring Systems (WAMS) utilizing synchrophasor measurements is considered one of the essential parts in smart grids that enable system operators to monitor, operate, and control power systems in wide geographical area. On the other hand, high-speed, reliable and scalable data communication infrastructure is crucial in both construction and operation of WAMS. Universal mobile Tele...

The main cause of wide-area disruptions in the present power network is due to the relatively long transmission lines between regions, the continuous load growth without a corresponding increase in transmission network capacities. This disturbances have stressed power systems further and forced them operate closer to voltage and angle instabilities. As a result, stability of such power systems ...

The efficient recruitment of physicians “specially qualified” in the principles of “modern tropical medicine and hygiene” proved, however, to be a difficult task. To address this problem, the Secretary of State for the Colonies, Joseph Chamberlain, organized a committee in 1901 to draw up plans for amalgamating the six medical departments of British West Africa. Their primary goal was to devise...