Integrated Optimal Active and Reactive Power Planning in Smart Microgrids with Possibility of One-Hour Islanding

Subject Areas : Power Engineering

Parastou Khademi Astaneh ¹ , Hossein Sheikh Shahrokh Dehkordi ²

1 - Department of Electrical Engineering, Rudehen Branch, Islamic Azad University, Rudehen, Tehran, Iran
2 - Department of Electrical Engineering, Rudehen Branch, Islamic Azad University, Rudehen, Tehran, Iran

Received: 2023-02-09 Accepted : 2023-04-06 Published : 2023-08-23

Keywords: Micro grid, Islanded, smart grid, Reactive and active power scheduling, Grid-Connected,

Abstract :

In power smart grids, equipment and electrical infrastructure and information smart grids in order to increase efficiency, improved reliability and reducing environmental pollution merged together. One of the basic challenges in such grids, increase uncertainty due to the use of distribution generation sources contain are renewable resources. In recent years has proposed the concept of the micro grid, it means a medium voltage distribution grid or low voltage grid includes distribution generation units, storage devices and different controlling loads with operational capability in both cases grid-connected and islanded. Because micro grid in the islanded, grid is with small power generation units, the smallest error it may be cause instability. It is therefore necessary so when passing through grid-connected to island make sure of sufficient storage in distribution generation generator according to their production capability curve in order to satisfy loads reactive and active power. The main focus of this research is on distribution generation unit’s reactive and active power scheduling for sustainable and economic operation from a micro grid. The need for a sustainable transition from grid-connected to island in case of an error in grid is one of the most important constraints in the micro grids. Therefore, must to be investigated economic scheduling of distribution generation units a micro grid considering these constraints. It should be noted that consideration these constraints in reactive and active power scheduling of distribution generation units can bring on more economic benefits in the steady pass from grid-connected to island. So, in this research will be presented formulation related to planning reactive and active power of distribution generation units by maintaining the constraints that its objective function will be to minimize the cost of power generation.

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