南方能源建设 (Mar 2023)
Analysis of Power Generation Technology and Economy on the Integration of Seawater Pump & Storage and Offshore PV
Abstract
[Introduction] There is no study on the integration of the seawater pump-storage and offshore PV at present time in Guangdong Province. The basic conditions are available for the development of offshore PV and seawater pump-storage near sea shore while the sea can be used as the lower reservoir. So it is necessary to study and explore the integration of offshore PV and seawater pump-storage given that studies are done for the difficulties of seawater pump-storage and the development on the key technologies. [Method] The technical configuration was presented for the independent PV power station based on the past experience from PV projects. Software was used to simulate the PV power station. And an evaluation on economic performance was done for the independent PV power station. The technical configuration was presented for the independent seawater pump-storage power station based on the past experience from pump-storage projects. And an evaluation on economic performance was done for the seawater pump-storage power station. After consideration of the integration of offshore PV and seawater pump storage, the evaluation on economic performance for the integration of pump-storage & PV project was also made. [Result] The principle technical configuration is provided for the PV & pump-storage integration project. The economic performance with different capacity percentage for the pump-storage & PV integration project is evaluated. [Conclusion] The integration of PV & pump-storage in Guangdong Province area is a relatively feasible choice based on the actual conditions. This method can solve the unbalance and instability of PV power source with a certain capacity of pump-storage. And it also has a certain economic feasibility. This will be conducive to the "3060 Dual Carbon Goals", and provide market players access to invest in, build and operate power source projects. When the integration project reaches a positive income and a certain investment return rate, it will greatly promote the implementation and scale up of other integration projects.
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