The Optimal Power Flow of Multiple Energy Carriers in Networked Multi-Carrier Microgrid

Document Type : Research Article

Authors

Department of Electrical Engineering, Islamic Azad University, Kashan Branch, Kashan, Iran.

Abstract

The future distribution network comprising different energy carriers will include small-scale energy resources (SSERs) and loads, known as a Networked multi-carrier microgrid (NMCMG). This concept not only leads to an efficient reduction in operation costs, but also encompasses the energy transformation between gas and electric networks at combined nodes, as well as district heating networks. In this paper, the combined natural gas and electricity optimal power flow (GEOPF) is employed to represent the inter-area transmission networks. The optimal GEOPF of NMCMG, which is represented as an energy hub system, is formulated as an optimization problem that is solved by applying a mixed-integer nonlinear programming (MINLP) technique. The proposed model is capable of minimizing the system costs by utilizing various sources and integrating the multiple-energy infrastructures as well as handling the energy management of the network. Simulations are performed on a system with three microgrids including combined heat and power (CHP), photovoltaic arrays, wind turbines, and energy storages in order to fulfill the required multiple demands. In the proposed model, microgrids are in grid-connected mode in order to exchange power when required. The results of the simulation demonstrate that GEOPF guarantees the regulation of power demand and power transaction in the multi-carrier microgrid (MCMG) and the main grid.

Keywords

Main Subjects

References

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AUT Journal of Electrical Engineering
Volume 51, Issue 2
December 2019
Pages 139-152

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