Abstract
In order to study the effect of hydraulic unbalance on the vibration characteristics of hydroelectric generating units, a mathematical model of hydraulic unbalance force and hydraulic unbalance torque at high Reynolds number is established, and a mathematical model of turbine efficiency is established according to this model. Then, combined with the mechanical and electrical unbalance factors, water hammer model, PID governor model, flow model and generator model, the coupling nonlinear mathematical model including the turbine regulation system and the rotor-bearing system of hydroelectric generating units is established. Based on the model, the vibration response characteristics of the unit under different working conditions are studied by numerical simulation. The relevant conclusions can provide theoretical guidance and application reference for the safe and reliable operation of the unit.
| Translated title of the contribution | Analysis of Nonlinear Vibration Characteristics of Hydroelectric Generating Units under Coupling Faults |
|---|---|
| Original language | Chinese (Simplified) |
| Pages (from-to) | 11-16 |
| Journal | 水电与抽水蓄能 |
| Volume | 9 |
| Issue number | 5 |
| Publication status | Published - 20 Oct 2023 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Research Keywords
- 水电机组
- 振动特性
- 水力不平衡
- 非线性动力学
- hydropower unit
- vibration characteristics
- hydraulic imbalance
- nonlinear dynamics
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