We built in the yard and wasteland photovoltaic power station and the threat of weeds, especially in previous years the installation of photovoltaic power station, many are built in the open space, spring and summer season, is "grass than people high", seriously affect the power generation, threatening the safety of photovoltaic power station.
So, weeds will have what adverse effects on the photovoltaic power station?
Hidden danger one.
Weed blocking components, component performance decline. Over the component of the weeds, in the light to produce shadows, shadows reflected in the components, reducing the amount of photovoltaic radiation, indirectly reducing the output current of the components, resulting in a decline in component output performance, reducing power generation.
Hidden danger two.
Weed shading, easy for the module to produce hot spot effect. The module is shaded by weeds for a long time, and over time the shaded part will be used as a load to consume the energy generated by other solar cell modules with light. The shaded components will heat up and produce hot spot effect. The long-term hot spot will cause irreversible impact on the performance of the components and even cause the components to burn up, which will shorten the overall life of the power station and affect the income of the power station.
Hidden danger three.
Dense weeds, affecting the heat dissipation of the equipment. The main equipment of photovoltaic power plant, inverter and converter box will generate certain heat during operation, and if they are in the dense weed shade for a long time, it will inhibit the external heat dissipation of the equipment, and the heat will not be dissipated for a long time, which will lead to equipment overheating and failure. In addition, it is worth mentioning that the hot climate in summer plus the high temperature of the equipment can not be dispersed, there will be a fire risk.
Grass tips
Manual weeding
It is understood that there are only two existing methods of weeding - manual weeding and the use of chemical weeding.
Some power stations use a combination of portable mowers and manual mowing operations, the disadvantage is that it consumes a lot of manpower and funds.
And the use of chemical weeding is generally the local agricultural dealers near the purchase of some agricultural herbicides, can be effective weed control.
Animal weed control
The photovoltaic power station is stocked with goats, for photovoltaic power station weeding, the cost is similar to manual weeding. However, it should be noted that the power station PV module installation height is 1.5m, goats can not jump to the components, in addition, the PV cable as far as possible to lay underground, the ground part of the installation of protective cover.
