1.广东电网有限责任公司电力科学研究院,广东省 广州市 510080
2.广东电科院能源技术有限责任公司,广东省 广州市 510080
3.上海电气电站设备有限公司发电机厂,上海市 闵行区 201100
4.广东国华粤电台山发电有限公司,广东省 台山市 529200
5.广东珠海金湾发电有限公司,广东省 珠海市 519000
[ "刘石(1974),男,博士,首席技术专家,研究方向为电力设备振动控制与故障诊断,13925041516@139.com" ]
收稿:2017-12-01,
纸质出版:2018-02-28
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刘石, 万文军, 高庆水, 等. 基于温度场变化的发电机定子端部绕组振动主动控制[J]. 发电技术, 2018,39(1):23-29.
Shi LIU, Wenjun WAN, Qingshui GAO, et al. Active Frequency Modulation Control of Turbo-Generator Winding End Vibration Based on Temperature Field Variation[J]. Power Generation Technology, 2018, 39(1): 23-29.
刘石, 万文军, 高庆水, 等. 基于温度场变化的发电机定子端部绕组振动主动控制[J]. 发电技术, 2018,39(1):23-29. DOI: 10.12096/j.2096-4528.pgt.2018.004.
Shi LIU, Wenjun WAN, Qingshui GAO, et al. Active Frequency Modulation Control of Turbo-Generator Winding End Vibration Based on Temperature Field Variation[J]. Power Generation Technology, 2018, 39(1): 23-29. DOI: 10.12096/j.2096-4528.pgt.2018.004.
针对引进型大型发电机定子绕组端部振动超标问题,提出一种基于温度场变化的定子绕组端部振动主动调频控制方法。采用两端固定-铰支直梁,研究温度场变化对结构固有频率的影响机制。据此设计试验方案,结果表明,通过调整定子冷却水、冷氢温度,达到定子绕组端部固有频率远离电磁激振频率的目的,避开了共振区,从而有效地降低了定子绕组端部的振动。最后,开发了基于温度场热应力主动调频控制逻辑模块,为控制汽轮发电机定子绕组端部的振动提供一种新方法。
Aiming at the problem of excessive vibration of the stator end winding of the imported large turbo-generators
an active frequency modulation control method of the stator end winding vibration based on the change of temperature field was proposed. Taking the fixed-hinged straight beam as an example
the influence mechanism of temperature field on natural frequency of structure was studied
and a test plan was designed. The results show that by adjusting the temperature of the stator cooling water and cold hydrogen
the natural frequency of the stator end winding is far away from the electromagnetic excitation frequency and the resonance region is avoided
thereby effectively reducing the vibration of the stator end winding. Finally
the active frequency modulation control logic module based on temperature field thermal stress was developed
which provides a new method for controlling the vibration of the stator end winding of turbo-generator.
陈伟梁, 徐博侯, 黄磊.大型汽轮发电机定子绕组端部的振动分析[J].浙江大学学报:工学版, 2010, 44(8):1558-1561.
万书亭, 姚肖方, 李明, 等.汽轮发电机定子绕组端部振动特性分析[J].华东电力, 2012, 40(9):1623-1627.
田科技, 孙首群, 栾本言, 等.汽轮发电机定子绕组端部振动模态分析[J].噪声与振动控制, 2014, 34(6):33-36.
赵洋, 严波, 曾冲, 等.大型汽轮发电机定子端部磁力作用动态响应分析[J].电工技术学报, 2016, 31(5):199-206.
唐贵基, 亓军锋, 万书亭, 等.汽轮发电机定子绕组端部振动在线监测系统的研究[J].机械设计与制造, 2011(7):133-135.
刘胜建.汽轮发电机定子绕组振动的监测和干预[J].华电技术, 2012, 34(8):57-59.
Bissonnette M R. End-winding vibration monitoring and interpretation[C]. Proceedings of IEEE International Symposium on Electrical Insulation (ISEI). IEEE: San Juan, PR, USA, 2012: 285-290. http://ieeexplore.ieee.org/document/6251474/ .
周国伟. 汽轮发电机内部故障振动特性分析及在线监测方法研究[D]. 北京: 华北电力大学, 2014. http://www.wanfangdata.com.cn/details/detail.do?_type=degree&id=Y2657620 .
刘石, 仲继泽, 冯永新, 等.大型二极汽轮发电机定子绕组端部共振的二重点理论[J].西安交通大学学报, 2013, 47(7):80-84.
刘石, 仲继泽, 冯永新, 等.使用磁流变阻尼器的大型汽轮发电机定子绕组端部振动控制[J].西安交通大学学报, 2013, 47(4):39-43.
朱小东, 张刚, 赵飞, 等.某200MW发电机振动及氢气系统故障分析及处理[J].发电与空调, 2017, 38(4):24.
Liu S, Guo Y X, Li Z, et al. Improvement of vibration characteristics on stator end winding of 600MW generator[C]. Proceedings of ASME 2013 Power Conference. American Society of Mechanical Engineers: Boston, Massachusetts, USA, 2013:V002T06A002, 5.
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