Hardware Emulation of Energization of a Long Transmission Line by High-Frequency Power Electronic Converter

Mazumdar, S and Basu, K (2020) Hardware Emulation of Energization of a Long Transmission Line by High-Frequency Power Electronic Converter. In: IEEE Transactions on Power Electronics, 35 (9). pp. 9267-9280.

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Abstract

Hardware emulators, simulating a test environment in real time, are an essential tool in testing power system equipment. This article presents a hardware emulator of a programmable transmission line capable of simulating high-frequency transients. Emulation of, energization of long transmission line, requires the observer to solve transmission line or telegraphers equations in real time. This article identifies a continuous time model that captures the wave nature and suitable for real-time implementation. This article derives the discrete-time model to be solved in the observer of the hardware emulator. A step-by-step procedure is given to determine two key emulator parameters: observer sampling frequency, and switching frequency of the power amplifier considering different hardware, event, and software related constraints. For high bandwidth requirement, a high switching frequency, 100-kHz, 12-kVA silicon carbide (SiC) based voltage source converter is designed to operate under a current controller with a gain crossover frequency of 5 kHz. A system on chip that combines an Anvanced RISC Machine (ARM) processor along with an field programmable gate array (FPGA) is used to implement the observer. Experimental results verify accuracy of the designed emulator in the event of energization of a long transmission line. Though proposed transmission line emulator can only be used to study the energization of a long line with one end terminated with shunt reactor, the solution can be extended for emulation of a long line that links two sections of power grid. © 1986-2012 IEEE.

Item Type:	Journal Article
Publication:	IEEE Transactions on Power Electronics
Additional Information:	Copyright for this article belongs to the publisher.
Keywords:	Continuous time systems; Electric lines; Electric power transmission networks; Field programmable gate arrays (FPGA); Power amplifiers; Real time control; Silicon carbide; Switching frequency; System-on-chip; Transmissions, Continuous time modeling; High frequency transients; High switching frequencies; Long transmission lines; Power system equipments; Real-time implementations; Silicon carbides (SiC); Voltage source converters, Power converters
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	24 Nov 2024 14:29
Last Modified:	24 Nov 2024 14:29
URI:	http://eprints.iisc.ac.in/id/eprint/65578

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