With China’s development into the world’s second-largest economy, power supply shortages have become a difficult problem during its economic growth. Pumped storage power stations can solve the power supply shortage through peak regulation and valley filling of the power grid. In recent years, pumped storage power stations have become a key construction area in China. External deformation monitoring of the dam of pumped storage power stations is gradually becoming an important means of ensuring the normal operation of power stations. This paper develops a method for monitoring the external deformation of a dam based on GNSS technology, which ensures the normal operation of a pumped storage power station through data processing, analysis, and warning. The effectiveness of the method is demonstrated through an example of the Tianchi pumped storage power station in Henan province.
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