基于运行工况的低水头水轮发电机不圆度分析

由于结构的特殊性,农村电网中低水头、小容量发电机在运行中圆度变化较大,影响着发电机的稳定性。为了改善该类型发电机运行品质,提高低水头水轮发电机可靠性,该文针对发电机运行参数进行数据分析、并进行理论解析方程及 ANSYS 仿真分析计算,对造成发电机不圆度机理进行研究,发现作用在低水头水轮发电机特殊结构上的不平衡重力及交变离心力导致发电机偏心,从而造成发电机不圆度增大。同时偏心引起的不平衡磁拉力对机组稳定性影响较大,反过来不平衡磁拉力又使发电机不圆度增大。依据该文研究结论提出了低水头、小容量发电机安全运行措施,经过实际运行考验,证实运行效果比较理想。该研究可为农村小水电发电机安全运行提供一种解决方...

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Published in农业工程学报 Vol. 29; no. 24; pp. 79 - 85
Main Author 李正贵 杨逢瑜 司国雷 王得红 邓育轩 马彪
Format Journal Article
LanguageChinese
Published 兰州理工大学能源与动力工程学院,兰州 730050 2013
甘肃柴家峡水电站,兰州 730065%兰州理工大学能源与动力工程学院,兰州,730050%烽火机械厂,成都,611130%甘肃柴家峡水电站,兰州,730065
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ISSN1002-6819
DOI10.3969/j.issn.1002-6819.2013.24.011

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Summary:由于结构的特殊性,农村电网中低水头、小容量发电机在运行中圆度变化较大,影响着发电机的稳定性。为了改善该类型发电机运行品质,提高低水头水轮发电机可靠性,该文针对发电机运行参数进行数据分析、并进行理论解析方程及 ANSYS 仿真分析计算,对造成发电机不圆度机理进行研究,发现作用在低水头水轮发电机特殊结构上的不平衡重力及交变离心力导致发电机偏心,从而造成发电机不圆度增大。同时偏心引起的不平衡磁拉力对机组稳定性影响较大,反过来不平衡磁拉力又使发电机不圆度增大。依据该文研究结论提出了低水头、小容量发电机安全运行措施,经过实际运行考验,证实运行效果比较理想。该研究可为农村小水电发电机安全运行提供一种解决方法。
Bibliography:Li Zhenggui, Yang Fengyu, Si Guolei, Wang Dehong, Deng Yuxuan, Ma Biao (1. Institute of Energy and Power Engineering Lanzhou University of Technology, Lanzhou 730050, China; 2. Gansu Chao'iaxia Hydropower Station. Lanzhou 730065, China; 3. Fenghuo Machinery Factory, Chengdu 611130, China)
11-2047/S
Low-head hydro-generators are an internationally recognized renewable green clean energy with the most advantages in China. At present, hydro-generators operating in the countryside with electrified wire netting are generally a horizontal structure with a low-head and small capacity. With the increase of low head hydroelectric generating turbines operating in the river, there still exist different problems in the various links. However, a relatively short history of the design, manufacture, installation, operation and maintenance of low head hydraulic turbines may easily lead to the increase of roundness deformation of the generator in operation. Field technicians usually do nothing more that an analysis of the struc
ISSN:1002-6819
DOI:10.3969/j.issn.1002-6819.2013.24.011