ES-DC2 Dust Monitoring System for Solar Panel (Comparison Method)

ES-DC2  Dust Monitoring System for Solar Panel is  a  method  to  quantify  the  impact  of  dust pollution on power generation efficiency by comparing the electrical performance parameters (such as short-circuit current, maximum power, etc.) of clean photovoltaic modules  En  dust-contaminated  modules.  Its  core  principle  is  to  calculate  the efficiency  loss  caused  door  dust pollution by  measuring  the  difference  in  electrical performance  between  clean  modules  En  contaminated  modules  under  the  same conditions.

ES-DC2 dust  index  meter  is  suitable  voor  photovoltaic  panels  met  a maximum adaptability of 30A, 50V and 700W . The included SMD Pt100RTD is used for the backside temperature measurement of the photovoltaic panel , and the output is via Modbus RTU (RS485) .

Measuring principle

De  main  principle  of  the  reference  method  voor  measuring  the  pollution  of photovoltaic modules is as follows: two photovoltaic modules of the same model batch are set up and placed in the same environment, one is kept clean and the other accumulates dust naturally. According to IEC 60904, the effective irradiance of the two photovoltaic modules is calculated by measuring the short-circuit current and the back temperature of the module. The pollution loss is calculated by comparing the effective irradiance of the polluted photovoltaic module with the effective irradiance of the clean reference photovoltaic module. The calculation formula of the pollution loss index SLI is as follows:

SLI =  (1-Geffs/Geffc)  ×  100%.  Geffs  is  the  effective  irradiance  calculated  from  the contaminated components, and Geffc is the effective irradiance calculated from the clean components.