The power industry’s pressing need for the most economical ways to transfer bulk power along a desired path may be met by building new transmission lines, which is a long and costly process. Alternatively, it may be quicker and cheaper to utilize the existing transmission lines more efficiently. Power flow control in a transmission line is an art that is still being perfected. Three decades after demonstrating the last tool, Unified Power Flow Controller, we now have the latest tool, Sen Transformer, that promises to control active and reactive power flow independently at the lowest possible cost. The test results controlling power flow in a 33 kV line using world’s first, commercial-grade Sen Transformer will be presented. The presentation is designed to provide
- basic principles of power flow control theory,
- an overview of the most commonly used power flow controllers, and their merits and demerits, and
- future trends, including power electronics inverter-based Unified Power Flow Controller to transformer and load tap changers-based Sen Transformer.
The audience will hear from an expert who actually designed and commissioned a number of power electronics-based FACTS controllers since their inceptions in the 1990s.
Kalyan Sen is the President & Chief Technology Officer of Sen Engineering Solutions, Inc. (www.sentransformer.com) that specializes in developing SMART power flow controllers—a functional requirements-based and cost-effective solution. Kalyan worked for 33 years in academia and industry. He was a key member of the Flexible Alternating Current Transmission Systems (FACTS) development team at the Westinghouse Science & Technology Center for which he became a Westinghouse Fellow Engineer. He contributed to concept development, simulation, design, and commissioning of FACTS projects at Westinghouse. He conceived some of the basic concepts in power flow control technology for which he was elevated to the IEEE Fellow grade with the citation: for the development and application of power flow control technology. He is the Co-inventor of the Sen Transformer, which is commercially available to regulate ±6.5 MVA line power in a 33 kV line.
Kalyan received BEE (first class honors, 1982), MSEE (1983), and PhD (1987) degrees, all in Electrical Engineering, from Jadavpur University (India), Tuskegee University (USA), and Worcester Polytechnic Institute (USA), respectively. He also received an MBA (2012) from Robert Morris University (USA). He is a licensed Professional Engineer in Pennsylvania and New York.
Kalyan has authored or coauthored more than 25 peer-reviewed publications, 8 issued patents, 2 books, and 3 book chapters in the areas of power flow control and power electronics. He is the Coauthor of the book titled, Introduction to FACTS Controllers: Theory, Modeling, and Applications (978-0-470-47875-2), IEEE Press and John Wiley & Sons, Inc. 2009, which is also published in Chinese and Indian paperback editions. His second book is titled, Power Flow Control Solutions for a Modern Grid using SMART Power Flow Controllers (ISBN: 978-1-119-82435-0), IEEE Press and John Wiley & Sons, Inc., 2022.
Kalyan has served many organizations. He has been serving as an IEEE Power & Energy Society (PES) Distinguished Lecturer since 2002. In that capacity, he has given presentations on power flow control technology more than 200 times in 20 countries. He serves IEEE Board of Governors of Society on Social Implications of Technology (SSIT) as Life Members Chair. He also serves IEEE Region 2 as its Professional Activities Chair.
In 2003, he reestablished the Pittsburgh Chapters of the PES and the Industry Applications Society (IAS). Both Chapters received the “Outstanding Large Chapter” awards for their activities in 2004. He served as the Founding Chair of IEEE Pittsburgh PELS Chapter that received the Best Chapter Award in 2015. Under his Chairmanship, the IEEE Pittsburgh Section received the “Outstanding Large Section” award for its activities in 2005. He received the IEEE Pittsburgh Section Outstanding Volunteer Service Award (2004 and 2023) and PES Outstanding Engineer Award (2004). His other past positions included Editor of the IEEE Transactions on Power Delivery (2002 – 2007), Technical Program Chair of the 2008 PES General Meeting in Pittsburgh, Chapters, and Sections Activities Track Chair of the 2008 IEEE Sections Congress in Quebec City, Canada, PES R2 Representative (2010 – 2011), PELS R1-R3 and R7 Chair (2016 – 2020) and R4-R6 Chair (2021 – 2023), Pittsburgh SSIT Chapter Chair (2018 – 2021) and Member of the IEEE Center for Leadership Excellence (CLE) Committee (2013 – 2014). He is an inaugural class (2013) graduate of the IEEE CLE Volunteer Leadership Training (VOLT) program. He has been serving as the Special Events Chair of the IEEE Pittsburgh Section and Boy Scouts of America Leader for more than a decade. He is a Distinguished Toastmaster (DTM) who led District 13 of Toastmasters International (TI) as its Governor to be the 10th-ranking District in the world in 2007-8.