摘要
光伏组件在正常发电过程中,由于所处外部环境的影响,难免会出现组件内部结晶老化、失效等现象,尤其是在局部阴影条件下,极易出现热斑现象,影响光伏发电系统的安全运行。相较于传统的热斑现象,文章主要讨论了基于结晶缺陷组件中小电阻热斑现象在发电过程中的形成机理,提出了单个组件的热斑抑制策略,并通过实验结果验证了该策略可以从发热机理上切断发热源,确保光伏组件安全运行。
During the normal power generation process of photovoltaic modules,due to the influence of the external environment,it is inevitable that the internal crystallization,aging and failure of modules will occur,especially under the condition of local shadow,hot spots are very easy to occur,which will affect the safe operation of photovoltaic power generation system.Compared with the traditional hot spot phenomenon,this paper mainly discusses the formation mechanism of the small resistance hot spot phenomenon in the power generation process based on the crystal defect module,and puts forward the hot spot suppression strategy of a single module.The experimental results verify that this strategy can cut off the heat source from the heating mechanism and ensure the safe operation of photovoltaic modules.
作者
方杭杭
付厚
王思奇
李爽
杨帅
Fang Hang-hang;Fu Hou;Wang Si-qi;Li Shuang;Yang Shuai
出处
《电力系统装备》
2021年第16期163-164,共2页
Electric Power System Equipment
关键词
光伏发电系统
等效小电阻
热斑抑制
photovoltaic power generation system
equivalent small resistance
hot spot suppression