摘要
光伏阵列在实际运行中常会受到阴影遮挡的影响,导致光伏阵列的输出功率出现多个峰值点,即多峰点现象。这种现象会降低光伏系统的整体效率和发电量。通过跟踪多峰点,可以确保系统始终运行在全局最大功率点附近,从而提高系统效率。因此,提出阴影遮蔽下光伏阵列超短期功率多峰点帝王蝶优化算法(Monarch Butterfly Optimization,MBO)跟踪方法。建立阴影遮蔽下的光伏阵列模型,描述和预测阵列输出特性。根据帝王蝶迁移算子,实现不同种群间的信息交换,并引入服从柯西分布的随机矢量实现变异,发现多个潜在功率峰点,并找到全局最大功率点。由仿真实验可知,该方法在静态、动态阴影遮蔽下,均可以有效跟踪峰点,且跟踪得到的功率值与实际功率基本一致。说明所提方法可以实现阴影遮蔽下光伏阵列超短期功率多峰点跟踪。
Photovoltaic arrays are often affected by shadow occlusion during actual operation,resulting in multiple peak points in the output power of the photovoltaic array,known as the multi⁃peak phenomenon.This phenomenon will reduce the overall efficiency and power generation of photovoltaic systems.By tracking multiple peak points,it can be ensured that the system always operates near the global maximum power point,thereby improving system efficiency.Therefore,a multi⁃peak MBO tracking method for ultra short term power of photovoltaic arrays under shadow shading is proposed.Establish a photovoltaic array model under shadow shading,describe and predict the output characteristics of the array.According to the migration operator of the monarch butterfly,information exchange between different populations is achieved,and a random vector following a Cauchy distribution is introduced to achieve mutation.Multiple potential power peaks are discovered,and the global maximum power point is found.According to simulation experiments,this method can effectively track peak points under both static and dynamic shadow shading,and the power is relatively consistent with reality.The proposed method can achieve ultra short term power multi peak tracking of photovoltaic arrays under shadow shading.
作者
张俨
苏华英
王融融
范俊秋
郭炜
ZHANG Yan;SU Huaying;WANG Rongrong;FAN Junqiu;GUO Wei(Power Dispatching&Control Center of Guizhou Power Grid Co.,Ltd.,Guiyang 550002,China;Eastern E-Energy(Beijing)Co.,Ltd.,Beijing 100192,China)
出处
《电子设计工程》
2025年第23期172-176,共5页
Electronic Design Engineering
基金
南方电网网级决策项目(GZKJXM20240079)。
关键词
阴影遮蔽
光伏阵列
超短期功率
多峰点MBO跟踪
柯西分布
shadow masking
photovoltaic array
ultra short term power
multi⁃peak MBO tracking
Cauchy distribution
