田湾核电站发电机定子端部引线振动的缓解

Ease of Generator Stator End Wire Vibration in Tianwan NPP

本文描述了田湾核电站俄供发电机定子端部引线的缺陷,分析认为该缺陷的根本原因在于其端部设计不合理,端部引线出现共振,从而导致引线产生疲劳裂纹。为在机组运行期间缓解引线振动,分析发电机定子端部振动大的部位和工艺参数(定冷水温度、热氢温度、无功功率)之间的关系,制定程序进行了相关试验,描述了试验过程,总结了端部引线振动和定子冷却水温度、热氢温度、无功功率间的关系。

The defects of Russian generator stator end wire of Tianwan nuclear power plant is described,and the root causes of the defects is that its design is not reasonable,and resonance appears on the end wire which leads excessive vibration and fatigue crack.To alleviate the stator end wire vibration during operation in the unit,relationship between parts of the big vibration in generator stator and process parameters(stator cooling water temperature,thermal hydrogen temperature,reactive power)are analyzed.Tests are carried out according to complied procedures.The test process are described,and the relationship between end wire vibration and stator cooling water temperature,thermal hydrogen temperature,reactive power are summarized.