Enhancing Low Frequency Oscillations Damping of a Power System by a TCSC Controlled with Sliding Mode Method
Publish place: majlesi Journal of Electrical Engineering، Vol: 12، Issue: 1
Publish Year: 1397
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_MJEE-12-1_004
تاریخ نمایه سازی: 25 بهمن 1401
Abstract:
Sliding mode control is an efficient and robust control method widely used in nonlinear systems. Power systems are one of the largest nonlinear dynamic systems which their transient stability analyses have a lot of importance. In this paper, sliding mode control is applied for improving the low frequency oscillations damping of a single machine connected to an infinite bus. The performance of the system is analyzed in normal mode operation, post-fault state, after operation of relays (and opening the breakers in the both ends of the faulty line), and reclosing mechanism which returns the line to service. Here, TCSC is employed as an oscillation damper. TCSC can be considered as a controllable impedance determined by the sliding mode control. In addition, a dynamical observer is proposed for the sliding mode controller. Simulation results demonstrate that, the performance of the power system in damping the low frequency oscillations is improved significantly.
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Authors
Hossein Amootaghi
Department of Electrical Engineering, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran
Shahrokh Shojaeian
Department of Electrical Engineering, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran
Ehsan Salleala Naeini
Department of Electrical Engineering, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran
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