独立直流微网能量管理控制策略  

Energy Management Control Strategy of Stand-alone DC Micro-grid

作　　者：李琰[1] 王盼宝[1] 张继元[1] 王卫[1] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨150001

出　　处：《电源学报》2013年第5期1-8,共8页Journal of Power Supply

基　　金：高等学校博士学科点专项科研基金(20122302110009)

摘　　要：在直流微网控制系统中,维持母线电压稳定以及能量的合理分配对系统可靠运行具有重要的指导意义。针对基于光伏发电的独立直流微网系统,提出一种新的能量管理控制策略,根据光伏DC/DC变换器在不同光照条件下的控制策略,利用蓄电池储能单元作为支撑,通过蓄电池充放电时不同的能量管理控制策略,维持母线电压稳定,为直流负载提供电能,其核心是使光伏电池与蓄电池储能单元协调工作,确保直流微网的高效稳定运行,最后通过实验结果验证了所提出控制策略的正确有效性。Maintenance of the stability of DC bus voltage and the reasonable distribution of the energy has great guiding significance to the reliable operation of the DC micro-grid control system. The DC micro-grid control system based on photovoltaic power generation system was analyzed, and a new control strategy for energy management was put forward. According to the control strategy of Photovoltaic DC/DC converter under different light conditions on the state of off-grid, the storage battery energy storage unit was used as support. Different energy management control strategy when the battery charge or discharge was used to maintain the stability of DC bus voltage and provide power for DC load. Its core is to make the photovoltaic cell and the battery energy storage unit coordinated work, to ensure the eflficient and stable operation of the dc micro-grid, finally the experimental results verified the correctness of the proposed control strategy.

关 键 词：直流微网 母线电压 协调控制 能量管理 

分 类 号：TM727[电气工程—电力系统及自动化]