用户侧光储型微电网中央控制器研制

Control Device Development of User-Side PV-ESS Microgrid

用户侧光储型微电网是最大化分布式光伏发电系统就地消纳利用水平的有效方式,研究用户侧光储型微电网的中央控制器,对推动智能微电网建设、电力市场改革和国家新能源政策推广具有重要意义。为提高微电网控制器集成度及降低设备成本,针对不同用户的用电需求,基于分层多时间尺度通信方式研制了光储型微电网中央控制器,集成了黑启动、无缝切换、功率预测、运行优化控制与能效管理等功能模块,并通过实验验证所提策略的正确性。所研制的中央控制器为用户侧微电网的并网接入提供了低成本高效率的解决方案,对推动用户侧光储微电网的大规模应用具有重要意义。

Microgrid is an effective concept to make full use of distributed PV. Control device development of residential microgrid with PV and energy storage system （PV-ESS） can promote smart grid construction, electric power market reform and national energy policy. To improve microgrid central controller （MGCC） integration and reduce equipment cost, a novel MGCC considering different users＇ demand was developed. Based on multi-level communication model, MGCC integrated many functional modules, including black start, seamless transfer, power prediction, operation optimal control and energy management. Experiments verified validity of the proposed MGCC and its strategies. The MGCC provides a low cost and high efficiency solution for large-scale integration of microgrids. With improved feasibility, effectiveness and safety of residential microgrid construction, it is of significance for large-scale application of PV-ESS microgrids.