摘要
文章针对微电网分层控制中出现的问题,如微电网并网转离网失败及存在离网"缝隙",在离网转并网过程中存在合闸冲击等问题。提出移频控制无通信线互联的微电网控制技术,并搭建了20k W,400V微电网物理模型系统进行实验验证。验证了采用该方法可以实现不依赖通信,无MGCC,由储能装置与DG自主并联,无通信线互联的微电网系统,可以实现微电网并网转离网无缝切换,离网运行能量平衡,离网转并网的无冲击并网。
A frequency shift control technology without interconnected communication lines is proposed for problems in hierarchical control of micro-grid, such as failure of switching from grid-connected to off-grid state and the existing gap, and closing impact caused by switching from off-grid to grid-connected state. A 20kW and 400V verification platform of micro-grid physical model is constructed, based on which the proposed method is tested without communication and MGCC. It is verified that a micro-grid system without interconnected communication lines which is parallel connected with DG via energy storages can achieve seamless switching between grid-connected mode and off-grid modes, energy balance of off-grid operation, and non-impact grid-connection from off-grid to grid-connected state.
出处
《供用电》
2016年第10期64-70,63,共8页
Distribution & Utilization
基金
国家高科技研究发展计划(863计划)(2015AA050104)
国家电网公司重点科技项目(SGSDDK00KJJS1500184)
专利(CN105244900A)~~
