文章摘要
奚霁仲,李飞,张兴,等.基于集中损耗的光伏发电单元年发电量RT-LAB仿真分析[J].电力系统自动化,2018,42(8):156-162. DOI: 10.7500/AEPS20170712005.
XI Jizhong,LI Fei,ZHANG Xing, et al.Concentrated Loss Based RT-LAB Simulation Analysis of Annual Power Generating Capacity for Photovoltaic Unit[J].Automation of Electric Power Systems,2018,42(8):156-162. DOI: 10.7500/AEPS20170712005.
基于集中损耗的光伏发电单元年发电量RT-LAB仿真分析
Concentrated Loss Based RT-LAB Simulation Analysis of Annual Power Generating Capacity for Photovoltaic Unit
DOI:10.7500/AEPS20170712005
关键词: 光伏发电单元  损耗建模  发电量仿真  最大功率点跟踪  RT-LAB
KeyWords: photovoltaic unit  modeling of power loss  power generation capacity simulation  maximum power point tracking  RT-LAB
上网日期:2018-03-14
基金项目:国家重点研发计划资助项目(2016YFB0900300);国家自然科学基金资助项目(51707053)
作者单位E-mail
奚霁仲 合肥工业大学电气与自动化工程学院, 安徽省合肥市 230000  
李飞 合肥工业大学电气与自动化工程学院, 安徽省合肥市 230000 sandflylf@qq.com 
张兴 合肥工业大学电气与自动化工程学院, 安徽省合肥市 230000  
马铭遥 合肥工业大学电气与自动化工程学院, 安徽省合肥市 230000  
吴凡 合肥工业大学电气与自动化工程学院, 安徽省合肥市 230000  
陈武 国网安徽省电力有限公司广德县供电公司, 安徽省宣城市 242000  
摘要:
      发电量是定量评估光伏发电单元效益的重要指标,而逆变器损耗与发电量指标息息相关。已有的光伏发电单元发电量计算模型或过于复杂,或忽略了逆变器参数和控制算法带来的影响,难以准确计算逆变器损耗。针对上述问题,提出了基于集中损耗模型的光伏发电单元发电量计算方法。该方法根据逆变器的瞬时输出功率,采用了集中等效模型来模拟逆变器在不同工作点的损耗,所需参数较少,简单准确且不会增加模型的计算负担。同时该模型考虑了电力电子器件的参数和控制对发电量的影响。最后通过RT-LAB实时仿真平台搭建了所述光伏发电单元发电量详细仿真模型,并与实际系统的年发电量进行对比,验证了该模型的正确性。
Abstract:
      Power generation capacity is an important indicator for the quantitative assessment of the benefits of photovoltaic(PV)units, and the loss of inverters are closely related to the power generation capacity indicators. Existing models for PV units generation capacity are excessively complex or difficult to calculate its loss accurately since the effects of converter's parameters and control algorism are ignored. To address the above issues, the calculation method of PV unit generation capacity based on concentrated loss model is proposed. The method proposed adopts the concentrated equivalent model to simulate converter loss at diverse operating points in accordance with the instant output of converter. This method is simple and accurate since less parameters are needed and the calculation burden is not increased. The effects of power electronic device parameters and control on generation capacity are considered in the model. Finally, based on the RT-LAB real-time simulation platform, the annual power generation model of grid-connected PV unit is built and a comparison is made with the actual system. The simulation results prove the correctness of the model.
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