内蒙古电力技术2015，Vol.33Issue(6)：39-42,46,5.DOI:10.3969/j.issn.1008-6218.2015.06.020
机组轴系扭振模型扭转刚度在线自适应调整方法研究
Online Self-Adaptive Adjustment Method Study on Torsional Stiffness of Torsional Vibration Model
俎海东 1李晓波 1焦晓峰1
作者信息
- 1. 内蒙古电力科学研究院,呼和浩特 010020
- 折叠
摘要
Abstract
The accuracy of safety analysis could be guaranteed when the torsional vibration model was adjusted online, according to the inherent characteristics of the torsional vibration of the shafting. Torsional stiffness of model was set as the object for adjustment. The sensitivity of the natural frequency of torsional vibration model to structure parameters was analyzed and calculated. According to the difference between the natural frequency of torsional vibration which was get from actual shafting and the natural frequency of torsional vibration which was calculated by torsional vibration model, the adaptive adjustment of the torsional stiffness of mode was solved by using the method of Taylor expansion which ignores two times or more correction. The logic structure of the adaptive process of torsional vibration model was designed and the online adaptive function of torsional vibration model was implemented in the torsional vibration safety and analysis system. The torsional vibration models of 1000 MW turbogenerator was used as an example and the accuracy of the method was verified.关键词
汽轮发电机组/扭振模型/扭转刚度/固有频率/灵敏度/自适应调整Key words
steam turbine unit/model of torsional vibration/torsional stiffness/natural frequency/sensitivity/self-adaptive adjustment分类
能源与动力引用本文复制引用
俎海东,李晓波,焦晓峰..机组轴系扭振模型扭转刚度在线自适应调整方法研究[J].内蒙古电力技术,2015,33(6):39-42,46,5.
