水电站尾水平台振动对变压器性能影响分析

目前水电站变压器一般安装在水电大坝附近陆地上,具有走线较长、经济性差、建设成本高的缺点;为达到降低成本的目的,将变压器直接安装在水轮发动机附近的尾水平台上成为趋势。由于尾水平台存在低幅随机振动,当变压器长期处于该工况时对变压器安全运行的影响未知。针对上述问题,通过获取不同工况下安装在尾水平台上变压器的振动数据;并经过基于快速傅里叶变换算法处理的频谱分析,证实水电站尾水平台振动对变压器性能并无影响,可采取此种方案以减少建设成本。

Influence of Vibration of Tail Water Platform on Transformer Performance

At present, hydroelectric power station transformers were generally installed on the land near hydroelectric dams. They had the disadvantages of long cabling, poor economy, and high construction cost. It has become a trend to gradually install the transformer directly on the draft tube platform near the hydro-generator engine to reduce costs. Due to the existence of low-amplitude random vibration at the draft tube platform, the effect on the safe operation of the transformer when the transformer stays in this condition for a long time is unknown. In view of the above problems, by obtaining the vibration data of the transformer installed on the draft tube platform under different working conditions and spectrum analysis based on the Fast Fourier Transform Algorithm, it is verified that the vibration of the draft tube platform of the hydroelectric power station has no effect on the transformer performance, which can take this solution to reduce costs.