Comprehensive treatment of end vibration in turbine generator stator

YANG Qunfa; SHEN Wenhua; LIU Shi

English

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Comprehensive treatment of end vibration in turbine generator stator

Thermal Power Generation Vol. 44, Issue 5, Pages: 125-128(2015)

更新时间：2025-09-28

- Comprehensive treatment of end vibration in turbine generator stator
- 作者机构：
  
  1. 广东珠海金湾发电有限公司
  2. 广东电网公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM311
- Published：2015
- 稿件说明：
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YANG Qunfa, SHEN Wenhua, LIU Shi. Comprehensive treatment of end vibration in turbine generator stator[J]. Thermal Power Generation, 2015, 44(5): 125-128.
DOI：

YANG Qunfa, SHEN Wenhua, LIU Shi. Comprehensive treatment of end vibration in turbine generator stator[J]. Thermal Power Generation, 2015, 44(5): 125-128. DOI：

摘要

某600 MW机组QFSN-600-2型发电机由于定子绕组端部振动大

导致水电接头脱焊引起短路接地故障。通过振动测试分析

判断该振动源于50 Hz转子机械振动通过轴承、基座传递到定子绕组端部

传递过程由于结构共振导致振动超标。对此

采取改变定子绕组端部刚度、降低激振力及加装阻尼装置等措施

将定子绕组的端部振动最大值控制在150μm以内。

Abstract

Due to large vibration of stator end winding

the stator ground protection faults occurred twice in QFSN-600-2 600 MW generator in a 600 MW unit.Vibration tests show that

the mechanical vibration with frequency of 50 Hz transmitted from the bearing

base to the stator end winding

during this process the structural resonance caused excess vibration.Thus

a series of measures were taken to control the maximum value of turbine generator stator end winding vibration to a safe level

including changing the stator winding end stiffness

reducing the excited forces and installing damping devices.After these measures were taken

the maximum vibration was reduced to below 150μm.

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