基于集中损耗的光伏发电单元年发电量RT-LAB仿真分析

XI Jizhong

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基于集中损耗的光伏发电单元年发电量RT-LAB仿真分析

更新时间：2025-08-13

- 基于集中损耗的光伏发电单元年发电量RT-LAB仿真分析
- Automation of Electric Power Systems Vol. 42, Issue 8, Pages: 156-162(2018)
- 作者机构：
  
  合肥工业大学电气与自动化工程学院,安徽省,合肥市,230000
- 作者简介：
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- Published：2018
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XI Jizhong. [J]. Automation of electric power systems, 2018, 42(8): 156-162.
DOI：

XI Jizhong. [J]. Automation of electric power systems, 2018, 42(8): 156-162. DOI：

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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