摘要
研究了含分布式电源的微电网及其对配电网的影响,提出了一种微电网的主从控制策略方法。该方法可以实现对微电网的电压与功率的平滑控制。主从控制应用于孤岛和并网运行的微电网,通过改进下垂控制和PQ控制结合的方法,提出了基于电压外环、电流内环和功率环等的反馈控制器。该控制器应用于微电网在孤岛模式、并网模式与两种模式之间的切换过程。通过Matlab/simulink仿真,分析了微电网运行中各分布式电源的功率、电压和频率的变化规律。仿真结果表明了微电网中分布式电源主从控制策略的有效性。
Study the effect of the distributed generations connected to a micro-grid to propose corresponding control strategy. The master-slave control method is proposed to control voltage and power of the distributed generation microgrid. This control method is applied to islanded and grid-connected operation of the micro-grid. Besides,the droop control and PQ control combined method is improved to propose feedback controller based on outer voltage loop,inner current loop and power loop etc. For the switching characteristic between the islanding and grid-connecting operational mode of micro-grid,a Matlab / Simulink simulation model is built and implemented in different power modes of the distributed generations,as well as the frequency and voltage changing rules to verify the master-slave control strategy in making the micro-grid＇s operation reliable. The simulation results indicate that the master-slave control strategy for the distributiongeneration in micro-grid has a good performance.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2015年第1期1-6,共6页
Journal of North China Electric Power University：Natural Science Edition
基金
国家自然科学基金资助项目(513111122)
高等学校学科创新引智计划("111"计划)(B08013)
国家高技术研究发展计划(863计划)项目(2011AA05A301)
关键词
分布式电源
微电网
下垂控制
主从控制
控制策略
distributed generation
micro-grid
droop control
master-slave control
control strategy
