摘要
针对微源逆变器串联连接的微网系统,分析了光伏微源特性对串联型微网(series micro-grids,SMGs)系统电压稳定性的影响。首先分析了系统结构;其次建立了复杂环境条件下光伏阵列模型,讨论了各微源直流链电压与系统输出电压之间的关系;最后分析了微源特性对SMGs输出电压的影响机理,并研究了基于混合储能的稳定性控制策略。算例结果验证了该控制策略的有效性。
The influences of photovoltaic micro-source characteristics on voltage stability of the series micro-grids （SMGs）, whose inverters are connected in series, are analyzed. Firstly the system architecture of SMGs is analyzed; then a photovoltaic array model under complex environment is established and the relations between output voltage of SMGs and micro-source dc link voltages are discussed; finally the influencing mechanism of micro-source characteristics on output voltage of SMGs is analyzed in detail, and a voltage stability control strategy of SMGs based on hybrid energy storage is researched. The validity of the proposed control strategy is verified by results of simulation and experiments.
出处
《电网技术》
EI
CSCD
北大核心
2013年第9期2446-2451,共6页
Power System Technology
基金
国家自然科学基金项目(51047010)
甘肃省科技支撑计划项目(1204GKCA003)的资助~~
关键词
光伏微源
微网
电压稳定性
串联
photovoltaic micro-source
micro-grids
voltage stability
series
