Kalyan of Sen Engineering Solutions, Inc.

Abstract: Electric power sources are frequently located away from population centers. Therefore, the electricity must be transported from the power sources to consumers through transmission and distribution lines. The voltage changes its magnitude and phase angle at any point along a line due to the voltage drop across the line impedance, which is caused by the flow of current in the line. However, the voltage at a point-of-common-coupling with a load must be maintained within the regulatory limits. Voltage regulation techniques have been practiced in power grid applications with the use of inductors, capacitors, transformers and load tap changers (LTCs) since the earlier days of electrical engineering. However, the latest trend is to use more and more power electronics-based solutions. Even though the costs of the available solutions vary widely, the basic underlying theory of voltage regulation is still the same as it has always been. The voltage control techniques are applicable in electric transmission lines as well as various other applications, such as motor drives, flicker control, harmonic mitigation, and so on. In examining the various solutions for voltage regulation, the presenter discusses how these solutions address both functional needs and cost demands.

The presentation is designed to provide the basic principles of voltage regulation theory, an overview of the most commonly used voltage regulators, and future trends. 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. Two reference books are as follows.

1. Introduction to FACTS Controllers: Theory, Modeling, and Applications (ISBN: 978-0-470-47875-2), IEEE Press and John Wiley & Sons, Inc. 2009
2. 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.

Biography:

Biography: 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 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.

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