纳子峡水电站3号机组上机架振动超标分析处理
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摘要
通过对检修中发现问题的原因分析、采取措施和改造处理,纳子峡水电站3号机组开机经过温升试验、空载扰动试验、机械过速158%转速试验及甩负荷试验后未再出现机组过速后上、下导轴瓦间隙增大,摆度、振动超出机组稳定运行要求范围的情况,检修前、后机组运行相关数据参数的对比可以看出:机组检修后发电机各部摆度、振动等的运行相关数据参数在规范要求的范围内,机组运行稳定,达到了预期的效果。
Through analyzing causes, taking measures and conducting treatment of the problems found in the overhaul, the No.3 unit of the Nazixia Hydropower Station was turned on. After the temperature rise test, the no-load disturbance test, the mechanical 158% overspeed test and the load rejection test, increase of clearance between the upper and lower guide bushes, and the swing and vibration exceeding the requirements of the stable operation of the unit never occurred when the unit is overspeed. The comparison of the unit operation-related data and parameters before and after the maintenance shows that the operation-related data such as swing and vibration of the generator are within the range of the specification after overhaul. The unit is stable in operation and the treatment has achieved the expected effect.
Through analyzing causes, taking measures and conducting treatment of the problems found in the overhaul, the No.3 unit of the Nazixia Hydropower Station was turned on. After the temperature rise test, the no-load disturbance test, the mechanical 158% overspeed test and the load rejection test, increase of clearance between the upper and lower guide bushes, and the swing and vibration exceeding the requirements of the stable operation of the unit never occurred when the unit is overspeed. The comparison of the unit operation-related data and parameters before and after the maintenance shows that the operation-related data such as swing and vibration of the generator are within the range of the specification after overhaul. The unit is stable in operation and the treatment has achieved the expected effect.
引文
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[2] 者建伦,王胜.水轮发电机组振动的分析及处理[J].大电机技术,2003(04):35-38.
[3] 何锐锋.新丰江水电厂1机组上机架水平振动超标原因分析及处理[J].广东水利水电,2010(04):73-80.
[4] 朱正茂.东风发电厂2号机上机架振动超标原因分析与处理[J].贵州水力发电,2010(06):66-69.
[5] 张飞,罗成宗,辛建忠,赵志文.仙居蓄能电站上机架松动原因分析与处理[J].水电站机电技术,2017(06):44-46.
[6] 黄月笑,谭茂业,骆振业,谢进成. 大化水电厂机组上机架振动分析与轴线调整[J].红水河,2015(04)26-32.
[7] 马文利,杨天勇,李世军.水轮发电机组振动增大原因分析及处理[J].水电站机电技术,2005(03):51-53.
[8] 毛子首,马震岳.水轮发电机组上机架-定子系统动态特性参数敏感性分析[J].黑龙江水专学报,2010(03):01-03.
[9] 刘志强,陈俊汕.简述磁极键松动引起振动的处理方法[J].小水电,2003(04):39-40.
[10] 温小丽.55MW水轮发电机转子动平衡试验分析[J].西北水电,2010(04):72-75.
[11] 沈德,苟廷青.大型水轮发电机组振动分析及处理[J].西北水电,2006(03):69-71,74.
[12] 马建峰.某灯泡贯流机组噪音和异常振动分析处理[J].西北水电,2017(03):73-76.
[13] 傅康,贾嵘,董开松.基于振动特性试验的水电机组稳定性分析与评估[J].西北水电,2016(05):63-65.
[14] 成安.水轮机止漏环脱落原因分析及处理[J].西北水电,2016(06):62-65.
[15] 中华人民共和国国家标准.水轮发电机组安装规范:GB8564-2003[S].北京:中国标准出版社,2004.