水轮

Based on generator self excitation theory and the characteristics of black-start, we choose this simple method to be the criterion of generator self excitation problem in black start. Later, simulation of hydraulic generator self-excitation study is given.

从适用於黑启动快速这一特点出发，在已有的方法中选择了一种简单的近似方法来作为黑启动研究中自励磁产生与否的判据，从自励磁现象本质出发进行了阐述，并对水轮机组自励磁产生的暂态过程进行了仿真计算。

With the main protection designs of six hydro-generators in Baise, Letan, Fengtan, Wawushan, Pengshui and Laxiwa power stations as example, the design process of hydro-generators with odd branches can be reduced to the main protection design of hydro-generators with three branches per phase and the usage of incomplete split-phase transverse differential protection is becoming significant.

0引言随着三峡、龙滩、拉西瓦等工程的相继建设，国内的水电建设已进入又一个发展高潮，水电机组正向着大型和超大型方向发展[1]；大型水轮发电机主保护配置方案的定量化设计已逐步被电厂和设计院所接受，从而为大型发电机组的安全运行提供了高质量的保证[2-6]。

After the characteristics and development of excitation system of synchronous generators are analyzed, micro-computer regulating theory of excitation system is discussed, this dissertation presents a scheme of designing excitation system with Programmable Computer Controller and IGBT, and PCC IGBT excitation system of turbine generator is also developed according to the above mentioned.

本文在全面分析同步发电机微机励磁装置特点及发展现状的基础上，论述了微机励磁调节的原理，提出基于可编程计算机控制器控制的绝缘栅双极晶体管励磁系统的设计方法，并在此基础上开发了基于PCC控制的水轮发电机IGBT励磁系统。

This paper presents a method for analyzing deformation of thrust bearing with Teflon layer for hydrogenerators and designing surface shape .

本文介绍了水轮发电机弹性金属塑料瓦推力轴承的变形分析和瓦面形状的设计方法。

Water in a stream is harnessed by building a dam and putting in turbines for water to tum.

河流里的水可以借助于建筑水坝，并安装上使水发电的水轮发电机而加以利用。

The stable,high precise solutions are the key to research the dynamic characteristics of water turbine generator sets.

水轮发电机组动态特性研究的关键在于正确建模、重要零部件边界条件的确定及稳定、高精度的求解方法。

Based on actual hydro-electric generating set, this paper studies horizontal dynamic Characteristics and dynamic response under the unbalanced force, analyses the stability and the position of the most adverse reaction.

本文针对实际机组，通过建立机组动力学模型，深入研究了大型水轮发电机组轴系的横向动力特性和不平衡力作用下的动力响应，分析机组的稳定性和最不利反应位置。

To begin with, this paper deals with the importance of hydro generator units vibration and noise measurement and analysis. The existing research status, the developing trends and the application prospects for hydro generator units of vibration monitoring are introduced in details.

首先论述了水轮发电机组振动分析的重要意义，详细分析了振动监测的研究现状及发展趋势，并对其应用前景做了进一步分析。

Accordingly, the vibration theory, vibration sources and the part vibration fault features of turbine generator units are analysed, sorted out and finalized so as to lay a solid foundation for the establishment of fault diagnosis expert knowledge bank.

本文首先论述了水轮发电机组故障诊断的重要意义，详细分析了故障诊断的研究现状及发展趋势，并对故障诊断的应用前景做了进一步分析。

The results show that electromagnetic vibration of hydropower generator rotors exhibits nonlinear characteristics, including the jumping phenomenon of amplitude-frequency curve and the obvious soft characteristics.

结果表明，动态偏心条件下水轮发电机转子的电磁振动呈现非线性特征，幅频曲线在一定条件下将出现跳跃现象，系统呈现明显的软特性。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。