摘要
建立了包括光伏、风电、储能和能量管理系统(EMS)的典型微网结构,给出了基于储能的微网组网方案和运行控制方式,分析了储能在微网离网运行、并网运行及无缝切换等过程中的控制作用。基于LCL滤波器的储能电压源型变换器,提出了包含逆变器滤波电感电流环、滤波电容电压环和并网电感电流环的三环控制策略,通过保持内部两环的稳定性实现微网运行模式的平滑转换。最后,搭建了微网研究与测试平台,验证了上述控制策略的有效性。
A typical micro-grid including photovoltaic,wind farm,energy storage and energy management system is set,the configuration of micro-grid based on energy storage and its control are introduced,and the control function of energy storage in the islanded and grid-connected operation modes,as well as during the seamless transition between two modes is analyzed.For the energy-storage voltage-source converter based on LCL filter,a tri-loop control strategy is proposed,including converter-side inductance current loop,filter capacitor voltage loop and gird-side inductance current loop.The stability of two inner loops is maintained for the smooth transition between islanded and grid-connected operation modes.A micro-grid test platform is built to verify the effectiveness of the proposed control strategy.
出处
《电力自动化设备》
EI
CSCD
北大核心
2012年第3期99-103,108,共6页
Electric Power Automation Equipment
基金
国家重点基础研究发展计划(973计划)资助项目(2012CB215204)
中国科学院知识创新工程重要方向项目(KGCX2-EW-330)~~
关键词
微网
储能
电压源型变换器
离网/并网无缝切换
控制
micro-grid
energy storage
voltage-source converter
seamless transition between islanded and grid-connected operations
control
