Dynamic Model of Complete Machine and Vibration Characteristics Analysis of the Frame of Pumped Storage Unit

HUANG Jinhui; ZENG Hui; WAN Jingyu; YE Haoyang; XUE Congcong; PANG Heqing; ZHANG Wanfu

doi:10.19805/j.cnki.jcspe.2025.240524

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Dynamic Model of Complete Machine and Vibration Characteristics Analysis of the Frame of Pumped Storage Unit

更新时间：2026-10-10

- Dynamic Model of Complete Machine and Vibration Characteristics Analysis of the Frame of Pumped Storage Unit
- Chinese Journal of Power Engineering Vol. 45, Issue 11, Pages: 1833-1843(2025)
- 作者机构：
  
  1. 华东天荒坪抽水蓄能有限责任公司, 浙江安吉,313302
  2. 上海理工大学能源与动力工程学院,上海,200093
  3. 上海市动力工程多相流动与传热重点实验室,上海,200093
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240524
  CLC：
- Online First：17 November 2025，
  
  Published：17 November 2025
- 稿件说明：
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黄锦辉,曾辉,万晶宇,叶毫阳,薛聪聪,庞河清,张万福. 抽水蓄能机组整机动力学模型及机架振动特性分析动力工程学报, 2025, 45(11): 1833-1843 https://doi.

org/10.19805/j.cnki.jcspe.2025.240524
黄锦辉,曾辉,万晶宇,叶毫阳,薛聪聪,庞河清,张万福. 抽水蓄能机组整机动力学模型及机架振动特性分析动力工程学报, 2025, 45(11): 1833-1843 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240524.

org/10.19805/j.cnki.jcspe.2025.240524 DOI：

摘要

针对抽水蓄能机组在运行过程中出现的振动问题

系统研究了发电机转子不平衡量、导轴承结构参数、机组升速时间及转轮水体质量等关键参数对整机动力学行为的影响。建立整机动力学模型

对其进行模态分析以验证模型准确性

并且通过静力学分析固定部件的应力与应变;最后

分析不同参数对关键部件横向振动的影响。上/下机架模态与静力学分析结果显示

其固有频率高于共振阈值

应力与形变量均符合安全运行标准;谐响应结果表明

减小不平衡量、增大相位差、减小水体质量可以降低横向振幅;瞬态分析表明

不平衡量增加会加剧整机横向振动与应力

形变量与升速时间及水体质量有关

同时应力随转速的增大而增大

并且在额定转速下达到最大值。

Abstract

Aiming at the vibration problem of pumped storage unit during operation

the influence of key working parameters such as unbalance of generator rotor

structural parameters of guide bearing

unit acceleration time and water mass of runner on the dynamic behavior of the complete machine was systematically studied. With the establishment of the dynamic model of the complete machine

the modal analysis was carried out to verify the accuracy of the model

and the stress and strain of the fixed parts were analyzed by statics analysis. Finally

the influence of different parameters on the lateral vibration of key components was analyzed. Modal and static analyses of the upper/lower frames show that the natural frequencies are higher than the resonance threshold

and the stress and deformation conform to the safe operation standard. Harmonic response results show that the lateral amplitude can be reduced by reducing the unbalance

increasing the phase difference and reducing the water mass. Transient analysis shows that the increase of unbalance will aggravate the lateral vibration and stress of the complete machine

and the deformation is related to the acceleration time and water mass

while with a increase of rotational speed

the stress increases and reaches its maximum value at the rated rotational speed.

关键词

Keywords

references

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