The utility model discloses a photovoltaic board fault detection and fault self-shielding protection circuit, which comprises a photodiode L1; the light-emitting diode L1 is in series with a resistor R1, and is finally connected in parallel at both ends of the fault photovoltaic board; the circuit also comprises a light-emitting diode L2 or a light-emitting diode L3, a light-emitting diode L2 and a regulating resistor R3 in series. The diode is connected with diode D1 in parallel, and then connected to two ends of the PV panel. Or the light-emitting diode L3 and resistor R4 in parallel with the diode D2 in series, and then in parallel at both ends of the fault photovoltaic plate. The utility model can not only detect the fault, but also ensure the normal use of the photovoltaic panels connected in series with the fault photovoltaic panels. In the process of repairing or replacing the photovoltaic plate manually, the series branch of the photovoltaic plate works normally, which improves the speed and efficiency of manual detection.
【技术实现步骤摘要】
一种光伏板故障检测及故障自屏蔽保护电路
本技术属于电路设计
,具体地说,涉及一种光伏板故障检测及故障自屏蔽保护电路。
技术介绍
太阳能电池组件以一定的排列方式组合起来,以便于更好的采集光能用于发电,提高光能利用率。常见的排列组合方式为各光伏板的串并联结构,当一串联支路中某一个光伏板出现故障,故障原因可能是长时间的使用而导致的光伏组件自身损坏或者光伏板的热斑效应。此种情况下的故障光伏板等效于大电阻状态,在此条件下,该串联支路其它未出现故障的光伏板不能通过串联回路正常工作,光能利用效率降低。
技术实现思路
有鉴于此,本技术提供了一种光伏板故障检测及故障自屏蔽保护电路,本技术保证在检测出某一光伏板存在故障的同时,也不影响与该故障光伏板所串联的其它光伏板的正常使用。为了解决上述技术问题,本技术公开了一种光伏板故障检测及故障自屏蔽保护电路,包括发光二极管L1、固定电阻R1、二极管D1、发光二极管L2和限流电阻R3;所述发光二极管L1与电阻R1串联,最后并联在故障光伏板的两端;所述发光二极管L2与调节电阻R3串联后与二极管D1并联,然后并联在太阳能光伏板两端。可选地,所述的发光二极管L1与可调电阻R2并联之后与电阻R1串联。可选地,所述的发光二极管L1和发光二极管L2发出的光的颜色不同。本技术公开了一种光伏板故障检测及故障自屏蔽保护电路,包括发光二极管L1、固定电阻R1、可调节电阻R2、二极管D2、发光二极管L3和电阻R4;所述发光二极管L1与电阻R1串联,最后并联在故障光伏板的两端;所述发光二极管L3与电阻R4并联后与二极管D2串联,然后并联在故障光伏板两端。可选地, ...
【技术保护点】
1.一种光伏板故障检测及故障自屏蔽保护电路,其特征在于,包括发光二极管L1、固定电阻R1、二极管D1、发光二极管L2和限流电阻R3;所述发光二极管L1与电阻R1串联,最后并联在故障光伏板的两端;所述发光二极管L2与调节电阻R3串联后与二极管D1并联,然后并联在太阳能光伏板两端。
【技术特征摘要】
1.一种光伏板故障检测及故障自屏蔽保护电路,其特征在于,包括发光二极管L1、固定电阻R1、二极管D1、发光二极管L2和限流电阻R3;所述发光二极管L1与电阻R1串联,最后并联在故障光伏板的两端;所述发光二极管L2与调节电阻R3串联后与二极管D1并联,然后并联在太阳能光伏板两端。2.根据权利要求1所述的光伏板故障检测及故障自屏蔽保护电路,其特征在于,所述的发光二极管L1与可调电阻R2并联之后与电阻R1串联。3.根据权利要求1所述的光伏板故障检测及故障自屏蔽保护电路,其特征在于,所述的发光二极管L1和发光二极管L2发出的光的颜色不同。4...
【专利技术属性】
技术研发人员:海涛,李俊杰,时雨,刘振语,陈永鉴,易丐,周楠皓,李晖,周明雨,曹先省,
申请(专利权)人:广西大学,
类型:新型
国别省市:广西,45
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