Multiple-TMD-Based Structural Vibration Control for Pumped Storage Power Plants

Abstract

The high-frequency resonance in the superstructure of a pumped storage power station (PSPP) due to the generation unit can shorten the service life of the power station structure and even endanger its safety. Although tuned mass dampers (TMDs) have been proved to be effective in controlling structural vibration, their application in PSPPs is rare, as high-frequency vibration control of PSPPs has not been studied. In this paper, a TMD control method is proposed based on PSPP high-frequency vibration and various TMD control strategies, and a set of high-frequency TMD equipment is designed. Results of a series of vibration reduction tests and numerical analyses show that the new TMD device can effectively control the high-order mode of the structure, and the bandwidth of the suppression frequency is extended, which shows the robustness and control efficiency of the device.

Dynamic Response of Foundations during Startup of High-Frequency Tunnel Equipment

“…With the advancement of tunnel engineering, there is a growing need for specialized equipment. More high-frequency precision units [2][3][4] are being utilized, and ensuring the safety of accompanying special high-frequency infrastructure, particularly in relation to vibration issues in dynamic foundations, is crucial. Numerous studies have been conducted on vibrations in the mid to low-frequency range [5][6][7][8][9].…”