A Novel Approach to Interarea Oscillation Damping by Unified Power Flow Controllers Utilizing Ultracapacitors

Mahyar Zarghami
Mariesa Crow, Missouri University of Science and Technology
Jagannathan Sarangapani, Missouri University of Science and Technology
Yilu Liu
Stan Atcitty

This document has been relocated to http://scholarsmine.mst.edu/ele_comeng_facwork/809

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This paper discusses a novel approach for damping interarea oscillations in a bulk power network using multiple unified power flow controllers (UPFCs) utilizing ultracapacitors, also known more generally as electrochemical capacitors (ECs). In this paper, a new control is introduced to mitigate interarea oscillations by directly controlling the UPFCs' sending and receiving bus voltages that better utilizes the stored energy in the ECs. The results of this controller are compared with and without ECs. The proposed control provides better interarea oscillation mitigation when applied to multiple UPFCs in the 118-bus IEEE test system.