独立微网下柴油发电机与蓄电池协调供电研究

Research on the coordinated power supply of diesel generator and battery in independent micro grid

针对微电网受负荷冲击时,暂态电压和频率波动大的弊端,提出一种自适应的能量分层协调控制策略。通过对仿真数据的分析,柴油发电机和蓄电池协调供电比柴油发电机单独供电时,微电网频率和波动比下降了87.5%,暂态响应时间同比下降了75%。分层控制策略可以有效地抑制频率的波动,缩短暂态响应时间,提高电能质量。

For micro grid is impacted by the load, the transient voltage and frequency fluctuations big disadvantages, puts forward an adaptive energy layered coordination control strategy.Through the analysis of simulation data, diesel generator and battery coordination power than diesel generator power supply, alone with micro power grid frequency fluctuation ratio decreased by 87.5%,the transient response time fell 75% year-on-year.Hierarchical control strategy can effectively suppress frequency fluctuations and shorten transient response time, improve power quality.