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...

Abstract Phase Data Concentrator (PDC) is an important part of Wide Area Measurement System (WAMS) and widely used in transmission systems. WAMS technology will also be applied smart distribution network, which has many nodes, complex architecture various types data services, a single communication mode cannot meet its needs. In order to solve this problem, paper first introduces the compositio...

Phasor data concentrators (PDCs) are the critical components of a wide area monitoring system (WAMS) in the smart grid. They are multi-processor devices employed to collect, concentrate, and synchronize phasor data that is from various phasor measurement units and from other PDCs. Because of their present significance and potential criticality for WAMS, reliability of PDCs has become a high pri...

Essentialism and social constructionism theories have long explained the difficulties women experience as they aspire to higher managerial positions or enter science and technology fields. In the 1970s, the Women as Managers Scale (WAMS) sought to determine the extent to which males perceived females as being different from their social group. Given efforts to encourage women to consider IT car...