Compared with traditional photovoltaic power plants, floating photovoltaic systems are installed on floating bodies on the water surface. In addition to not occupying land resources, the ventilation and heat dissipation conditions above the water surface are good, and the cooling of the photovoltaic core equipment by the water body can effectively improve the power generation efficiency.
With the increasing application of floating power stations, safety issues have increasingly attracted industry attention. The photovoltaic system is a DC high voltage, and the water is conductive. How to ensure personal safety in the event of leakage? The humidity of the floating power station is high, and the PID attenuation of the components is more serious. How to solve the electric shock danger of the traditional method of suppressing the PID? The safety design of floating power plants has become the primary factor considered by the owners and design institutes.
Minimize DC nodes and cables
Since the centralized inverter scheme requires a combiner box, there are many high-voltage DC nodes, and the safety hazard is high. At the same time, the positive and negative electrodes of more than 100 strings in the centralized scheme are connected in parallel. When the positive and negative electrodes of any string are poorly insulated, electricity leakage occurs, and DC high voltage is applied to the water, and electric shocks to aquatic organisms will be inevitable. In addition, in the water scene, If the DC cable is broken, once it falls into the water, it will cause an electric shock hazard.
Post time: Apr-11-2022