Abstract
At present, the development of distribution network can’t meet the requirements of rapid economic development. The traditional single energy supply is difficult to meet the request, and distributed energy supply has a lot of advantages compared to it, particularly it's close to the end users, and they have been developed well and applied widely in recent years. This paper summarizes the features and current development of the distributed energy supply, and mainly describes the grid-connection model of distributed energy supply. Base on the mathematic grid-connection model of distributed power sources with different generation principles as well as that energy storage, the treatment of these models in distribution network power flow analysis is also presented.
Highlights
Centralized power generation, long-distance transmission and grid interconnection constitute the main way of electricity production, transmission and distribution
This paper summarizes the features and current development of the distributed energy supply, and mainly describes the grid-connection model of distributed energy supply
The main consideration is modeling of the relationship between the output active power and sunshine intensity
Summary
Centralized power generation, long-distance transmission and grid interconnection constitute the main way of electricity production, transmission and distribution. The interest in using renewable energy and small/medium-sized generators are increasing, especially in the increasingly rapid development of wind power and photovoltaic power generation. The new technology of using conventional fossil fuels, fuel cells and microturbines is object of the study. They can reduce the emission of pollutants greatly. Most experts agree that combination of large power grid and distributed power generation, together with the appropriate energy storage equipment, so as to save investment, reduce energy consumption, improve power system reliability and flexibility, and are the keys to the development of the electric power industry. After the penetration of distributed energy systems, the characteristics of single-power and radial will change
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