A unified optimal power flow modeling for VSC-HVDC converter: a novel methodology for optimal installation based on average loadability index
ISSN: 0332-1649
Article publication date: 15 November 2021
Issue publication date: 11 January 2022
Abstract
Purpose
This paper aims to propose a novel methodology for optimal voltage source converter (VSC) station installation in hybrid alternating current (AC)/direct current (DC) transmission networks.
Design/methodology/approach
In this analysis, a unified power flow model has been developed for the optimal power flow (OPF) problem for VSC-based high voltage direct current (VSC-HVDC) transmission network and solved using a particle swarm optimization (PSO) algorithm. The impact of the HVDC converter under abnormal conditions considering N-1 line outage contingency is analyzed against the congestion relief of the overall transmission network. The average loadability index is used as a severity indicator and minimized along with overall transmission line losses by replacing each AC line with an HVDC line independently.
Findings
The developed unified OPF (UOPF) model converged successfully with (PSO) algorithm. The OPF problem has satisfied the defined operational constraints of the power system, and comparative results are obtained for objective function with different HVDC test configurations represented in the paper. In addition, the impact of VSC converter location is determined on objective function value.
Originality/value
A novel methodology has been developed for the optimal installation of the converter station for the point-to-point configuration of HVDC transmission. The developed unified OPF model and methodology for selecting the AC bus for converter installation has effectively reduced congestion in transmission lines under single line outage contingency.
Keywords
- Particle swarm optimization
- Power transmission systems
- Power systems simulation
- Design optimization methodology
- Power electronic devices modeling
- Average loadability index
- Congestion management
- Optimal power flow (OPF) modeling
- Power system optimization
- Particle swarm optimization (PSO)
- Voltage source converter-HVDC (VSC-HVDC)
Acknowledgements
This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.
Citation
Agrawal, S. and Kundu, P. (2022), "A unified optimal power flow modeling for VSC-HVDC converter: a novel methodology for optimal installation based on average loadability index", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 41 No. 1, pp. 283-303. https://doi.org/10.1108/COMPEL-03-2021-0103
Publisher
:Emerald Publishing Limited
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