IEEE Power and Energy Society

Chicago Chapter 2012-2013


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Power Electron Tubes as an Enabling Technology for the Enhancement of the Electric Power Grid

Wednesday, April 10, 2013

 

John G. Kappenman

Storm Analysis Consultants

About the Topic

While semiconductor-based devices have been predominantly utilized in power electronic applications, they are fundamentally limited for the extremely high voltage and high power applications. Designs that have been put forth for current and next generation HVDC and FACTS systems universally rely on stacks of hundreds of semiconductor devices for operation. Semiconductor designs require complex balancing networks, snubbers to limit di/dt and dv/dt levels, require extensive cooling, and are completely vulnerable to arc-related failures.

Advanced Fusion Systems has introduced a new generation of electron tubes which can, in a single device, handle the voltages and currents required for current and next generation HVDC and FACTS systems. These electron tubes were originally developed for high-power microwave electronic warfare applications and have been modified to suit the unique requirements of the power industry. Individual tubes can simultaneously handle voltages to one million volts and currents of tens of thousands of amps continuously, making them well-suited to even EHV FACTS and HVDC applications.

The electron tubes do not use filaments but instead employ a proprietary cold cathode technology, giving them a life expectancy in excess of 25 years. They are built to withstand extreme shock as would be found in the military environment. The tubes will withstand repeated arcing with no damage, and can operate continuously at temperatures on the order of 1000 degrees Fahrenheit. As a result, the auxiliary cooling systems commonly needed for high power semiconductor applications are not needed for electron tubes.

This presentation will compare the operating characteristics of electron tubes and compare them to current state-of-the-art semiconductor devices. A number of applications for electron tubes relevant to fault current limiting and many other diverse applications in the areas of HV & EHV AC, HVDC and FACTS will be discussed.

About the Speaker

John G. Kappenman is the Owner and Principal Consultant for Storm Analysis Consultants. Prior to this he has worked for many years in the electric power industry and for the scientific/engineering firm Metatech Corp. He has been an active researcher in power delivery technologies and his primary engineering contribution has been his research work on lightning and geomagnetic storms and their disruptive effects on electric power systems.

He is a Senior Member of the Institute of Electrical and Electronics Engineers (IEEE) and the Power & Energy Society, and is the Past Chairman of the Transmission and Distribution Committee. He is also a member of a number of working groups and standards committees. He is a member of the American Geophysics Union. Mr. Kappenman provided presentations to the US Presidents' Commission on Critical Infrastructure Protection on the Potential Impact of Geomagnetic Storms on Electric Power System Reliability. He has also served on the Science Advisors Panel for the NOAA Space Environment Center.

Mr. Kappenman was one of the principle investigators under contract with the Congressional Commission to Assess the Threat to the United States from Electromagnetic Pulse (EMP Commission) and FERC. Mr. Kappenman has presented testimony before the Congress several times on the importance of geomagnetic storm impacts on the electric power industry. He also was a principal investigator examining the Vulnerability of the Electric Power Grid for Severe Geomagnetic Storms for FEMA under US Presidential Executive Order 13407. He was also one of the Principal Contributors to the 2008 US National Academy of Sciences Report on "Severe Space Events WeatherUnderstanding Societal and Economic Impacts".

Mr. Kappenman has also been a principal researcher for EPRI on various power electronic, FACTS and HVDC technologies and has been one of the principal researchers on the exciting new Electron Tube technology that will be the focus of the presentation.

Location       Time  
       
Sargent & Lundy, 24th floor Conference Room   11:30 AM   Social
55 East Monroe St   11:45 AM   Lunch (optional)
(Enter from Monroe or Adams, near Wabash)   12:00 PM   Presentation
Chicago, IL 60603   1:00 PM   Adjourn
312-269-2000      

Reservations

Please make your reservation by noon on Monday 8 Apr 2013 via the Online Reservation Form.

Directions to Luncheon Location

You can reach the 24th floor of 55 East Monroe Street from the South (Adams Street entrance) elevator bank only. There is NO need to sign-in at the Building Security console near the middle of the 1st floor (Wabash Street entrance).

Please bring your lunch with you. If you would like to purchase lunch, then the Under 55 dining room, in the basement on the North end of the building, is recommended.

Take the elevator to 24 and sign in with the Sargent & Lundy Receptionist. Please note that food is only permitted in the Hospitality Area outside the Conference Room. Food is not permitted in the Conference Room.

As you sign in, you may request a Discount Parking coupon. When you depart, you must pay for parking at the Automated Pay Station in the Parking Garage elevator lobby on the floor where you parked. First insert the parking ticket, then insert the discount coupon, then make payment. If you pay at the Garage Exit, then the discount is NOT available. With the discount, parking is $14, without $34.

Continuing Education

IEEE technical meetings may be acceptable as continuing education where required for maintenance of professional engineering licensure. Refer to the individual state's requirements for details. A receipt for one Professional Development Hour (PDH) will be provided.


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Updated 5 Mar 2013