交直流混合微电网组网和控制策略的研究与应用

摘要

深入研究适用于微电网的关键技术和能源管理,能够完成分布式能源的最大利用,实现微电网与大电网间能量交换的智能化、自动化和高效化.对交直流混合微电网的组网拓扑、并网/孤网运行及能量调度进行研究分析,提出了负荷控制策略、平抑新能源波动策略、孤岛运行策略、移峰填谷策略与并离网切换策略.本文的研究成果已成功应用于某公司自主建设的微电网示范工程,为分布式能源的并网研究提供了平台.%In-depth study on key technologies and energy management applicable to the microgrid can facilitate the maximum utilization of distributed energy and realize the intelligent, automatic and efficient energy exchange between the microgrid and the large power grid.In this paper, the networking topology, gridconnected/isolated network operation and energy scheduling of AC/DC hybrid microgridis studied and analyzed such strategies as load controlling, stabilization of new energy volatility, islanding operation, peak shifting and valley filling as well as load shifting and grid stitch on and off are proposed.The study result in this paper has been applied successfully to the microgrid pilot project which was constructed by a companyitself, which provides a platform for the study of grid-connected of distributed energy.