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In this paper, we consider the dayahead load and supply allocation problem in an electrical microgrid, which consists of a system manager, consumers, and suppliers. We do not impose any mathematical, operational, and economic assumptions on the consumers and suppliers other than restricting them to have a finite number of load and supply schedules. For example, a consumer can have arbitrary forms...
The present paper proposes a method for enhancing the resilience of distribution systems that are exposed frequently to disastrous conditions. In case of a fault, the distribution system is sectionalized into self-sufficient microgrids in order to prevent a possible spread of the fault with the minimum load shedding of the islanded portion of the distribution system. The design of self-sufficient...
Microgrids can serve to integrate distributed energy resources (DERs) and controllable loads in a smarter and more reliable fashion. The operation of residential microgrids with DER during islanded situation is of great significance to both customers and utility providers. This paper proposes two control strategies for a residential microgrid that has a shared energy storage (ES) in islanded mode...
In this paper, the resource sharing problem is considered for a network composed of interconnected dc nanogrids. Each nanogrid is equipped with photovoltaic (PV) energy and batteries. In order to improve the utilization of PV energy among the nanogrids, the amount decision of the sharing electricity needed to be made. An online Lyapunov-based algorithm of resource sharing among the interconnected...
In islanded microgrid system, the battery tends to be the most vulnerable element in terms of durability. Poorly managed battery charge/discharge process is one of the main life-limiting factors. To improve the battery life, a novel energy storage system topology and a power allocation strategy are proposed in this paper. A standalone 6kW Photovoltaic (PV) microgrid system with hybrid energy storage...
This paper presents optimized approaches for microgrid design and allocation of energy storage units to enhance self adequacy of microgrids. Microgrids are clusters of distributed energy resources serving clusters of distributed loads either in grid connected or isolated grid modes. The self adequacy of microgrids is maximized by the optimal installment of energy storage units that can store the spilled...
The paper studies the load distribution optimization in microgrid; Exclusive re searches on microgrid operation are required as it is different from traditional power. The accuracy of load model and its parameters have great effect on micro grid system digital simulation results. The paper establishes a load model that can reflect frequency characteristics, and analyzes the load distribution optimization...
Microgrid has attracted much attention in recent years thanks to the promise of mitigating voltage drop and reducing line loss to the grid from a combination distributed generations (DG). Detailed analyses of the Microgrid's radial network are carried out considering DG's effect on line losses and voltage regulation. A combined graph-based and GA (Genetic Algorithm) new method is proposed to calculate...
To realize the emerging potential of Distributed Generation (DG), a system approach which views generation and associated loads as microgrids is becoming a promising solution for the future power infrastructure. However, DG implies unpredictability of the energy production, in addition to the unpredictability of energy consumption. On the purpose of matching electricity supply and demand, an agent-based...
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