1. According to different planned capacities, the flood control classification and standards for photovoltaic power stations shall comply with regulations. For areas within the station where the ground elevation is lower than the aforementioned flood level, flood control measures shall be implemented. Flood control and drainage measures should be uniformly planned according to the planned capacity in the first-phase project and implemented in stages.
2. For photovoltaic power stations located along coastlines, if flood control embankments (or wave protection embankments) are constructed, the crest elevation shall meet the flood control standards specified in this code. It shall be determined based on the wave run-up corresponding to a 1% cumulative wave frequency plus a freeboard of 0.5 m.
3. For photovoltaic power stations located beside rivers, lakes, or other water bodies, if flood control embankments are constructed, the crest elevation shall meet the flood control standards specified in this code, with an additional freeboard of 0.5 m. Where significant impacts from wind, waves, or tides are expected, wave run-up shall also be added.
4. For power stations constructed in areas prone to waterlogging and equipped with flood control embankments, the crest elevation shall be determined based on the 50-year return period design waterlogging water level plus a freeboard of 0.5 m. If such data are unavailable, the historical highest waterlogging water level plus a freeboard of 0.5 m may be used. Where drainage facilities are provided, the crest elevation shall be determined based on the design waterlogging water level plus a freeboard of 0.5 m.
5. For zinc-aluminum-magnesium photovoltaic bracket power stations located in mountainous areas, measures to prevent and drain mountain floods shall be implemented. The design of flood prevention and drainage facilities shall be based on a mountain flood frequency of 2%.
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