Abstract
After the 21st UN Climate Change Conference, Net Zero Emissions (NZE) has become a hot issue in the power industry all over the world. The use of renewable energy for power generation will highly increase in the future. However, renewable energy power generation is limited by the uncertainty of renewable resources, which is easy to cause an imbalance between supply and demand. In order to eliminate the impact of renewable energy generators on the power system, the development of energy storage systems is most important. Pumped storage hydropower (PSH) is very popular because of its large capacity and low cost. The current main pumped storage hydropower technologies are conventional pumped storage hydropower (C-PSH), adjustable speed pumped storage hydropower (AS-PSH) and ternary pumped storage hydropower (T-PSH). This paper aims to analyze the principles, advantages and disadvantages of various PSH technologies, and provide a selection reference for future PSH expansion and replacement. In addition, this paper using a case for explain the T-PSH operating.
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