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Optimal capacity utilisation of transmission lines network in power flow operations: a survey

Daniel Esene Okojie (Electrical and Electronics Engineering, Tshwane University of Technology, Pretoria, South Africa)
Adisa Abdul-Ganiyu Jimoh (Electrical and Electronics Engineering, Tshwane University of Technology, Pretoria, South Africa)
Yskandar Hamam (Electrical and Electronics Engineering, Tshwane University of Technology, Pretoria, South Africa and University Paris Est/ESIEE, Paris, France)
Adebayo Ademola Yusuff (College of Science Engineering and Technology, University of South Africa, Pretoria, South Africa)

Journal of Engineering, Design and Technology

ISSN: 1726-0531

Publication date: 10 August 2019

Abstract

Purpose

This paper aims to survey the need for full capacity utilisation of transmission lines in power systems network operations. It proposes a review of the N-1 security criterion that does not ensure reliable dispatch of optimum power flow during outage contingency. The survey aims to enlarge the network capacity utilisation to rely on the entire transmission lines network operation.

Design/methodology/approach

The paper suggests transmission line switching (TLS) approach as a viable corrective mechanism for power dispatch. The TLS process is incorporated into a constraint programming language extension optimisation solver that selects the switchable line candidates as integer variables in the mixed integer programming problem.

Findings

The paper provides a practical awareness of reserve capacity in the lines that provide network security in outage contingency. At optimum power flow dispatch, the TLS is extended to optimal transmission line switching (OTLS) that indicates optimal capacity utilisation (OCU) of the available reserve capacity (ARC) in the network lines.

Practical implications

Computational efficiency influenced the extension of the OTLS to optimal transmission switching of power flow (OTSPF). The application of OTSPF helps reduce the use of flexible AC transmission systems (FACTS) and construction of new transmission lines..

Originality/value

The paper surveys TLS efforts in network capacity utilisation. The suggested ARC fulfils the need for an index with which the dispatchable lines may be identified for the optimal capacity utilisation of transmission lines network.

Keywords

Acknowledgements

This work was done under a full-time postgraduate scholarship programme of the Tshwane University of Technology (TUT), Pretoria, South Africa.

Citation

Okojie, D.E., Jimoh, A.A.-G., Hamam, Y. and Yusuff, A.A. (2019), "Optimal capacity utilisation of transmission lines network in power flow operations: a survey", Journal of Engineering, Design and Technology, Vol. 17 No. 5, pp. 1056-1076. https://doi.org/10.1108/JEDT-01-2019-0003

Publisher

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Emerald Publishing Limited

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