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Multi-Objective Approach to TCSC and DG Coordination under Contingency in an Integrated Transmission and Distribution Networks

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posted on 27.01.2022, 19:22 by Abubakar Sadiq AhmadAbubakar Sadiq Ahmad, Muhammad Buhari, James Garba Ambafi, Sunusi Sani Adamu, Nwohu Mark Ndubuka
Flexible AC Transmission System (FACTS) are deployed by Transmission System Operators (TSO) to manage congestion while meeting technical and multilateral supply commitments. Another issue is the de-carbonizing of the power supply framework by increasing penetration of Distributed Generation (DG) often at distribution network. However, separately planned FACTS and DG units by system operators (TSO and DSO) can worsen power systems performance in the presence of load growth. Therefore, this paper demonstrates the coordination of TCSC and DG through a multi-objective Particle Swarm Optimization (MOPSO) technique at the instance of TSO-DSO coordination scheme, to improve transfer capability, power loss and voltage deviation in an integrated transmission and distribution network (iT & DN). Two models of DG were coordinated with TCSC under normal and contingency cases. Results indicate that while ATC improvement for various transactions was achieved with TCSC, additional power losses incurred were further reduced with DG deployment in coordination with TCSC. Furthermore, the Pareto front, which establishes the correlation between objectives shows a diving parabola that is partly nonlinear. Also, the TCSC-DGP Q provide superior ATC and power losses compared with TCSC - DGP V. Again, under (N - 1) contingencies, the TCSC - DGP Q provides improved ATC compared with other contingency cases under TCSC only.

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Email Address of Submitting Author

ahmad.abubakar@futminna.edu.ng

ORCID of Submitting Author

0000-0001-7169-2049

Submitting Author's Institution

Federal University of Technology, Minna

Submitting Author's Country

Nigeria

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