Research on the measurement of low-frequency vibration of water turbine generators

XIAO Ming-wei1; YANG Yong-ming1; ZHONG Yu-lin2; FU Zhi-hong1; ZHANG Huai-qing1

doi:10.13873/j.1000-97872011.05.014

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Research on the measurement of low-frequency vibration of water turbine generators

更新时间：2025-09-11

- Research on the measurement of low-frequency vibration of water turbine generators
- Vol. 30, Issue 5, Pages: 54-57(2011)
- 作者机构：
  
  1. 重庆大学输配电装备及系统安全与新技术国家重点实验室
  2. 重庆地质仪器厂
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872011.05.014
  CLC： TV734.2
- Published：2011
- 稿件说明：
移动端阅览
[1]肖明伟,杨永明,钟玉林,付志红,张淮清.水轮发电机低频振动的测量研究[J].传感器与微系统,2011,30(05):54-57.

XIAO Ming-wei1, YANG Yong-ming1, ZHONG Yu-lin2, et al. Research on the measurement of low-frequency vibration of water turbine generators[J]. 2011, 30(5): 54-57.
[1]肖明伟,杨永明,钟玉林,付志红,张淮清.水轮发电机低频振动的测量研究[J].传感器与微系统,2011,30(05):54-57. DOI： 10.13873/j.1000-97872011.05.014.

XIAO Ming-wei1, YANG Yong-ming1, ZHONG Yu-lin2, et al. Research on the measurement of low-frequency vibration of water turbine generators[J]. 2011, 30(5): 54-57. DOI： 10.13873/j.1000-97872011.05.014.

摘要

水电机组振动参数是监测其运行稳定性的主要指标

且振动频率较低。为测量大中型水电机组低频振动

根据振动传感器频率特性补偿原理

设计了低频补偿电路

使其频率特性向低频拓展。为滤波电路的设计方便

引进了等效品质因数Q。阐述了磁电式振动传感器的数学模型

补偿电路的设计

将传感器系统与其数学模型的幅频特性在校正前、后分别进行对比分析。实验结果表明:补偿后该系统幅频特性能够向低频拓展

且稳定度、线性度等性能较好。

Abstract

The hydropower generating units’ vibration parameter is an important index to monitor its operating stability.To measure the low-frequency vibration of the large and middle scale of hydropower generating units

according to frequency characteristic compensation principle of the vibration sensor

a low-frequency compensating circuit is designed to extend the frequency characteristics to the low frequency region.To make the design of compensating circuit convenient

the equivalent quality factor Q is brought in.The mathematical model of the magnetoelectric vibration sensor and the design of the compensation circuit are described in detail.The amplitude-frequency characteristics of the sensor and its mathematical model are comparatively analyzed before and after compensation respectively.The experimental result shows that the design could extend the amplitude-frequency characteristics to the low frequency region

and have good stability and linearity.

关键词

Keywords

references

超低频振动传感器的研究 [J]. 李明国,孙荣祥,李勇. 煤矿机电 . 2008(03)

超低频绝对振动传感器传递函数优化技术研究 [J]. 余水宝. 仪器仪表学报 . 2006(08)

Low-frequency characteristics extension for vibration sensors [J]. 杨学山,高峰,候兴民. Earthquake Engineering and Engineering Vibration . 2004(01)

振动速度传感器幅频特性改进方法的研究 [J]. 俞阿龙,黄惟一. 自动化仪表 . 2004(05)

用磁电式速度计实现超低频振动传感器的研究 [J]. 范云霄,刘桦,王农,周广信. 山东科技大学学报(自然科学版) . 2001(03)

水轮发电机组振动故障诊断与识别 [J]. 沈东,褚福涛,陈思. 水动力学研究与进展（A辑） . 2000(01)

一种实现偶数高阶滤波网络的新方法 [J]. 余水宝. 电子测量与仪器学报 . 1999(01)

磁电式速度传感器动态特性分析 [J]. 程珩,刘岩. 太原重型机械学院学报 . 1994(03)

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