Abstract
Scarcity of fossil fuel resources has motivated the researchers to develop renewable energy based power projects. Instead of using a single or independent renewable energy source, it is preferable to use the combination of such energy sources in a distributed way to compensate the power fluctuations of the system and this leads to the concept of hybrid micro-grid energy. Voltage stability is an important parameter for the secure operation of the hybrid-micro grid, and IEEE 1547 Standard defines the limit of the voltage for the successful operation of the micro-grid. Although Vanadium Redox Batteries (VRBs) can help the system to stabilize the voltage when voltage sag occurs when a heavy load is suddenly connected to the system, this stabilization process takes some time. This paper discusses the application of super capacitors to the hybrid micro-grid system, as a higher energy density element, to help the system quickly recover its transient voltage.
Highlights
The centralized power generation system has been used for decades and usually the system utilizes fossil fuel as a resource, but the use of fossil fuel in the power generation poses a threat to human life and to those people who are situated near the power generation plants
Since renewable energy technologies unlike fossil fuel based power generation systems are “eco-friendly”, locating these “eco-friendly” power generation systems in remote areas is not required. It helps in the reduction of the transmission line losses, and decreases the risk of large blackouts. This idea leads to the concept of Distributed Generation (DG) using micro-grids because the large scale applications of the DG are possible by employing micro-grid
This paper presents the practical study of a micro-grid model under the influence of load change, and this is due to the fact that the transient voltage of the system is largely affected by the increase of load
Summary
The centralized power generation system has been used for decades and usually the system utilizes fossil fuel as a resource, but the use of fossil fuel in the power generation poses a threat to human life and to those people who are situated near the power generation plants. In addition to the mentioned problem, the centralized system faces the problems related to system stability and high transmission line losses because the system is usually located in the remote area [2]. Since renewable energy technologies unlike fossil fuel based power generation systems are “eco-friendly”, locating these “eco-friendly” power generation systems in remote areas is not required. It helps in the reduction of the transmission line losses, and decreases the risk of large blackouts. This idea leads to the concept of Distributed Generation (DG) using micro-grids because the large scale applications of the DG are possible by employing micro-grid. Micro-grid is developed by grouping a cluster of loads and parallel DG units in local distribution network
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