Photovoltaic and pumped storage system for dump of open pit coal mine and energy storage control method

The invention relates to the technical field of open pit coal mine and pumped storage comprehensive utilization, and provides an open pit coal mine waste dump photovoltaic and pumped storage system and an energy storage control method. The system comprises an upper reservoir, a lower reservoir and a floating type bidirectional hydroelectric generation system; the upper reservoir is covered with a greening layer, a lower reservoir is constructed at the bottom of the mining field by taking the edge of the dumping site as a boundary, the lower reservoir is provided with a floating type bidirectional hydroelectric generation system, and the upper reservoir and the lower reservoir are connected through a water conveying pipeline system; and the position or depth of the lower reservoir is changed according to the shape change of the dumping site. A comprehensive utilization mode of waste dump photovoltaic, pumped storage and ecological management is provided, a pumped storage power station is built in a production