The pumped-storage power station is affected by external forces and environmental erosion during its long-term service, thus causing serious safety accidents and economic losses. In order to avoid casualties and reduce economic losses, longterm health monitoring of the power station is necessary. Optical fiber sensor is one potential technology for the pumpedstorage power station structural health monitoring (SHM) by measuring distributed strain and temperature. In this paper, the dam construction site of the Liaoning Qingyuan Pumped Storage station is installed with the optical fiber sensors to monitor its temperature change during concrete cure process. The distributed temperature at four sides of the panel are recorded and compared. Temperature change due to curing process as well as energy interchange between the top and bottom of the panel is revealed by the optical fiber measurements. It is therefore verified that fiber optical sensor is complement for dam temperature monitoring and is well suited for the identification of energy interchange insides the dam panels.
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