当电网发生故障停止供电时,需快速检测出分布式发电系统形成的微网电力孤岛,停止其与电网之间的并网连接,正反馈主动移频式(active frequency drift with positive feedback,AFDPF)孤岛检测技术是一种常用的电力孤岛检测方法。文章结合...当电网发生故障停止供电时,需快速检测出分布式发电系统形成的微网电力孤岛,停止其与电网之间的并网连接,正反馈主动移频式(active frequency drift with positive feedback,AFDPF)孤岛检测技术是一种常用的电力孤岛检测方法。文章结合传统的正反馈主动移频式孤岛检测算法原理,在此算法基础上叠加反馈移频的二次方项进行改进,并阐述了其工作原理及对微电网系统的影响。通过理论分析及仿真验证表明,改进算法后的正反馈主动移频式孤岛检测是有效的,缩短了孤岛检测时间,减小了检测盲区,提高了检测效率,理论上不会对微电网系统带来新的谐波污染。展开更多
In this paper, we conduct research on the hybrid energy storage based photovoltaic piconets and the isolated net running comprehensive control system in the campus environment. Piconets flexible operation mode and the...In this paper, we conduct research on the hybrid energy storage based photovoltaic piconets and the isolated net running comprehensive control system in the campus environment. Piconets flexible operation mode and the efficient power supply without perfect stable control. Micro the early stage of network development related to micro network operation concepts are modeled on the control of large power system. Our proposed approach is proven to be effective and feasible through the numerical simulation and theoretical analysis which will be meaningful.展开更多
文摘当电网发生故障停止供电时,需快速检测出分布式发电系统形成的微网电力孤岛,停止其与电网之间的并网连接,正反馈主动移频式(active frequency drift with positive feedback,AFDPF)孤岛检测技术是一种常用的电力孤岛检测方法。文章结合传统的正反馈主动移频式孤岛检测算法原理,在此算法基础上叠加反馈移频的二次方项进行改进,并阐述了其工作原理及对微电网系统的影响。通过理论分析及仿真验证表明,改进算法后的正反馈主动移频式孤岛检测是有效的,缩短了孤岛检测时间,减小了检测盲区,提高了检测效率,理论上不会对微电网系统带来新的谐波污染。
文摘In this paper, we conduct research on the hybrid energy storage based photovoltaic piconets and the isolated net running comprehensive control system in the campus environment. Piconets flexible operation mode and the efficient power supply without perfect stable control. Micro the early stage of network development related to micro network operation concepts are modeled on the control of large power system. Our proposed approach is proven to be effective and feasible through the numerical simulation and theoretical analysis which will be meaningful.