The Evolution Of Microgrids And Different Other Components
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Abstract — Electricity supports almost all sectors of the economy and is a critical infrastructure in a nation. The central grid-based electricity gets considered as the most convenient and reliable form of energy. However, it has not met the entire customer demand need for power since over 1.3 billion people cannot access electricity. Microgrids are one of the new technologies developed to solve this problem and support emerging economies and sustainable development. This paper describes the evolution of microgrids and different other components.
Index Terms — Econmomy, Grid, Smart Grid, Microgrid, Reliable.
The new technologies to generate electricity at the distribution level called distributed energy resources such…show more content… A microgrid refers to a small electricity power system that is connected to the utility grid through the point of common coupling (PCC) and uses on-site Distributed Energy Resources (DERs) for the supply of all or part of local demands. Microgrids comprise of a low voltage (approximately ≤ 1kV) or medium-voltage (range 1-69 kV) locally controlled cluster of distributed energy resources that behave, from the grids perspective, as a single load both electrically and in energy markets. Fig. 1 shows the interaction between the two types of electrical systems and their corresponding components interlinked by the power converters.  From this figure, it can be revealed that the AC MGs can be connected to the bulk AC system via power transformers and require an AC/DC power converter to interconnect with the bulk DC system. Fig.1. Interconnection of various microgrid components.
A microgrid is introduced to resolve the issues with the economics and the resilience of power delivery systems. Microgrid loads get supplied by both the utility grid and on-site generation when connected to the utility grid. A microgrid is seen as an aggregated controllable load from the utility grid.
The microgrid structure consists of several types of distributed energy sources such as solar panels, wind turbines, microturbin, thermal power plant each in the form of distributed generation, including energy reserves from battery. Microgrid electrical connection points that