Power/Energy Systems Engineering Presents, "Smart Grid Transmission Technology"

10:30am Wed, Jun 6, 2012 at Atwater-Kent 218


Edvina Uzunovic

Technical Officer, Smart Grid Transmission Applications

Valley Group, a Nexans company  

Abstract: This presentation will give a brief overview of Smart Grid Transmission Technologies that change the way power systems are operated today. All presented project are real projects, state of the art and already implemented in power system, yet, still relatively unknown and not fully accepted in practice.  

These days everybody is talking about Smart Grid. Smart Grid is the existing power grid, but enhanced with 21st century technology. In Smart Grid, we nudge current to flow where we want it to flow. In Smart Grid, we collect information from all its participants; generators, transmission systems, and consumers alike, and based on that information, we operate the grid in most efficient, yet reliable manner. The 21st century power grid shall perform actions independently backed by reliable system information, and equally importantly, powered by new software capable of analyzing the system and future system actions in near real time. This is a major overhaul, recognized by governments and citizens alike as a future imperative.  

Advances in the field of power electronics led to a new approach called Flexible AC Transmission Systems or simply FACTS. This new approach is an answer to a call for a more efficient use of already existing resources in present power system.  FACTS devices are high voltage high current electronics devices capable of controlling voltages and power flows simultaneously, while maintaining and even improving power system security. The most advanced FACTS device to the day is installed at the New York Power Authority power system back in 2003, and is called Convertible Static Compensator.  

Phasor Measurement Units (PMU) are devices which measure the electrical power system voltages and currants with a common time source for synchronization. Phasor measurements that occur at the same time are called "synchrophasors”. In typical applications phasor measurement units are sampled from widely dispersed locations in the power system network and synchronized from the common time source of a GPS radio clock. Synchrophasor technology provides a tool for system operators and planners to measure the state of the electrical system and manage power quality. Because voltages and currents are truly synchronized, synchronized comparison of two quantities is possible, in real time. These comparisons can be used to assess system conditions, and in the future shall allow full automation of power systems.  

Bio: Edvina Uzunovic was born in Sarajevo, Bosnia and Herzegovina. She is an Electrical Engineer with major in Power Systems. She has received her B.Sc. from the University of Sarajevo, Bosnia and Herzegovina (1990), Masc. (1995) and Ph.D. (2001) from the University of Waterloo, Ontario, Canada, all in the area of Power Systems.  She was a Senior Research and Technology Engineer for nine years with New York Power Authority, where she was a member of team on a number of cutting edge technology projects.  After that, she has worked for three years as a Senior Quantitative Analyst, working in the front office of Alliant Energy, where she traded FTRs in Midwest Electricity Market. For the past year she was Technical Officer, Smart Grid Transmission Applications with the Valley Group, a Nexans company.

June 6, 2012