Optimal capacity utilisation of transmission lines network in power flow operations: a survey
Journal of Engineering, Design and Technology
ISSN: 1726-0531
Article publication date: 20 June 2019
Issue publication date: 3 September 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
:Emerald Publishing Limited
Copyright © 2019, Emerald Publishing Limited