基于微电网的分布式电源并网规划研究

The Planning and Research of Grid-Integration for Distributed Generation Based on Micro-Grid

新能源的迅速发展,使得大电网与分布式电源矛盾加剧.为了充分挖掘分布式电源为电网和用户所带来的价值和效益,微电网应运而生。微电网集成多个DG为一功率稳定的独立系统,有效解决了大规模DG的接入问题,其作为对单一大电网的有益补充,具有广泛应用的巨大潜力。本文根据微电网应用环境的不同对其进行了分类,分析了其不同的功能需求,提出了微电网的规划设计原则,列举了常用的微电网结构形式,并对微电网内电源的规划进行了阐述。最后,对一个实际算例进行仿真,仿真结果对微电网分布式电源并网规划提供了参考。

The contradiction between the large grid and distributed power is intensifying because of the fast development of new energy. To fully tap into the value and benefits of distributed energy for the grid and users, micro-grid emerges as the times require. Micro-grid integrates multiple DG as an independent system of power stability, and effectively solves the problem of large-scale DG access. As a useful supplement to the single grid, it has huge potential for wide application. This paper carries on the classification according to micro-grid’s applications in different environments, ana-lyzes their different functional requirements, puts forward the principle of planning and design of micro-grid, lists the common structure form, and describes the micro-grid power planning. Finally, a practical case is simulated;the result is able to provide references for the planning of grid-inte- gration for distributed generation.